High-pressure research has emerged as a pivotal approach for advancing our understanding and development of optoelectronic materials,which are vital for a wide range of applications,including photovoltaics,light-emitt...High-pressure research has emerged as a pivotal approach for advancing our understanding and development of optoelectronic materials,which are vital for a wide range of applications,including photovoltaics,light-emitting devices,and photodetectors.This review highlights various in situ characterization methods employed in high-pressure research to investigate the optical,electronic,and structural properties of optoelectronic materials.We explore the advances that have been made in techniques such as X-ray diffraction,absorption spectroscopy,nonlinear optics,photoluminescence spectroscopy,Raman spectroscopy,and photoresponse measurement,emphasizing how these methods have enhanced the elucidation of structural transitions,bandgap modulation,performance optimization,and carrier dynamics engineering.These insights underscore the pivotal role of high-pressure techniques in optimizing and tailoring optoelectronic materials for future applications.展开更多
Aqueous zinc-ion batteries(AZIBs)have emerged as promising,practical energy storage devices based on their non-toxic nature,environmental friendliness,and high energy density.However,excellent rate characteristics and...Aqueous zinc-ion batteries(AZIBs)have emerged as promising,practical energy storage devices based on their non-toxic nature,environmental friendliness,and high energy density.However,excellent rate characteristics and stable long-term cycling performance are essential.These essential aspects create a need for superior cathode materials,which represents a substantial challenge.In this study,we used MXenes as a framework for NH_(4)V_(4)O_(10)(NVO)construction and developed electrodes that combined the high capacity of NVO with the excellent conductivity of MXene/carbon nanofibers(MCNFs).We explored the electrochemical characteristics of electrodes with varying NVO contents.Considering the distinctive layered structure of NVO,the outstanding conductivity of MCNFs,and the strong synergies between the two components.NVO-MCNFs exhibited better charge transfer compared with earlier materials,as well as more ion storage sites,excellent conductivity,and short ion diffusion pathways.A composite electrode with optimized NVO content exhibited an excellent specific capacitance of 360.6mAh g^(-1) at 0.5 A g^(-1) and an outstanding rate performance.In particular,even at a high current density of 10 A g^(-1),the 32NVO-MCNF exhibited impressive cycling stability:88.6%over 2500 cycles.The mechanism involved was discovered via comprehensive characterization.We expect that the fabricated nanofibers will be useful in energy storage and conversion systems.展开更多
Metal-organic frameworks(MOFs)are a novel category of crystalline porous materials,which have become preferred heterogeneous catalysts for many reactions.MOFs are widely used in catalysis because of a com bination of ...Metal-organic frameworks(MOFs)are a novel category of crystalline porous materials,which have become preferred heterogeneous catalysts for many reactions.MOFs are widely used in catalysis because of a com bination of many advantages,such as large pore dimensions and surface area,abundant active sites,and possibility to be designed and modified after synthesis.As an important branch of the MOF family,lantha nide metal-organic frameworks(Ln-MOFs)-comprising a variety of multitopic organic ligands and Ln3+ions/clusters-are a very fascinating MOF materials with complex and diverse topologies.As the functional metal center of MOFs,lanthanide metal ions have a higher coordination number and abundant coordination geometries compared with transition metal ions,which establishes the potential application of Ln-MOFs in thefield of catalysis.In addition,Ln-MOFs have the same characteristics as MOFs,including structural diver sity and tailorability,high surface area,and high thermal and chemical stability;therefore,Ln-MOFs and their derivatives are suitable for heterogeneous catalysis under various conditions.In this review,an overview of the recent developments achieved in Ln-MOF catalysis,including heterogeneous organic catalysis and photocatalysis over Ln-MOFs and their derivative materials,is provided.展开更多
Multiferroic materials,which integrate ferroelectric and magnetic orders through magnetoelectric (ME) coupling, enable electric-field control of magnetism.However, bulk multiferroics face limitations, including relati...Multiferroic materials,which integrate ferroelectric and magnetic orders through magnetoelectric (ME) coupling, enable electric-field control of magnetism.However, bulk multiferroics face limitations, including relatively small spontaneous polarization,weak ME coupling coefficients,and limited operational stability under ambient conditions due to oxygen-vacancy-induced leakage currents, which restrict their practical applications.展开更多
The deterioration of water bodies due to organic pollutants,arising from the discharge of industrial wastewater,requires the development of new functional materials such as superhydrophobic/superoleophilic materials f...The deterioration of water bodies due to organic pollutants,arising from the discharge of industrial wastewater,requires the development of new functional materials such as superhydrophobic/superoleophilic materials for efficient water remediation.However,the large-scale practical applications of superhydrophobic materials are impeded by low surface energy fluorine compounds as one of the reactants in the synthesis of superhydrophobic materials,which has raised environmental issues due to their potential toxicity to humans.In addition to low surface energy,silicon-based compounds are eco-friendly and non-toxic and would be a better replacement for fluorine compounds to overcome these drawbacks.Accordingly,we have proposed a simple and fluorine-free strategy for constructing a superhydrophobic ZIF-POSS hybrid material through imine bond formation between the free aldehyde-functional group in zeolitic imidazolate frameworks(ZIF-90)and polyhedral oligomeric silsesquioxane containing amine groups(POSS-NH_(2)).Furthermore,the efficient incorporation of POSS-NH_(2)into ZIF-90 is demonstrated by FT-IR,PXRD,thermogravimetric analyses,and^(29)Si NMR and X-ray photoelectron spectroscopy.The resultant ZIF-POSS hybrid material displays an exceptionally high water contact angle of 157°and thus exhibits very high sorption selectivity and good absorbance for organic solvents from water.Consequently,ZIF-POSS@PDA@Sponge is successfully utilized for the removal of a series of organic solvents from water mixtures with a high separation efficiency of above 96%over 25 cycles of separation.More importantly,superhydrophobic ZIF-POSS and ZIF-POSS@PDA@Sponge exhibit excellent stability and durability under harsh chemical conditions which originate mainly from the mechanically and chemically inert POSS nanocage.Finally,this clearly suggests that the POSS supported zeolitic imidazolate framework(ZIF)might facilitate the rapid development of non-toxic superhydrophobic species for the excellent separation of organic solvents from water mixtures.展开更多
The growth of lithium dendrites and its associated challenges pose significant obstacles to the widespread adoption of lithium metal anodes.Although numerous inorganic materials offer the potential for stabilizing lit...The growth of lithium dendrites and its associated challenges pose significant obstacles to the widespread adoption of lithium metal anodes.Although numerous inorganic materials offer the potential for stabilizing lithium metal anodes,trial-and-error experiments are time-consuming and cost-intensive.In this work,first,a high-throughput screening workflow integrated with machine learning and calculations has been used to identify possible materials,which incorporates several key indicators encompassing electronic conductivity,phase stability,mechanical properties,chemical stability,and lithium-ion transport performance.Four materials were used in experiments,and the results from both characterization and electrochemical testing show that HfO_(2)@PP exhibits the best performance,which includes having the highest Young’s modulus.Furthermore,an Li||Li symmetric cell assembled using HfO_(2)@PP operating at 1 mA cm^(−2)and 1 mA h cm^(−2)exhibited stable cycling for over 1000 h,while an Li||LFP cell assembled using HfO_(2)@PP has a capacity retention rate of more than 90%and an average coulombic efficiency of 99.7%after 200 cycles at 1 C.This work provides a design method and ideas for inorganic coating materials on separators for lithium metal anodes.展开更多
Potassium ion batteries(PIBs)are important for the development of energy storage systems as an effective complement to lithium ion batteries(LIBs)owing to the abundance of potassium resources in the earth’s crust to ...Potassium ion batteries(PIBs)are important for the development of energy storage systems as an effective complement to lithium ion batteries(LIBs)owing to the abundance of potassium resources in the earth’s crust to meet the needs of large-scale energy storage systems.To this end,numerous studies have focused on anode materials,which can provide high capacity for PIBs.Bimetallic-based compounds(ABXs)achieve higher capacity and structural diversity due to their different chemical compositions and rich spatial structures.Moreover,the synergistic effect of the two metals makes the structure of ABXs more stable.Hence,ABXs are one of the most promising anode materials.This review focuses on performance optimization strategies(such as metal base selection,structural design,voltage regulation,and electrolyte optimization)and the electrochemical properties of ABXs.Finally,the current challenges and research prospectives of ABXs are presented.This review is expected to provide new perspectives and deeper insights into the study of ABXs as anode materials for PIBs and large-scale energy storage devices.展开更多
Classified as a non-Hermitian system,topological metasurface is one of the ideal platforms for exploring a striking property,that is,the exceptional point(EP).Recently,creating and encircling EP in metasurfaces has tr...Classified as a non-Hermitian system,topological metasurface is one of the ideal platforms for exploring a striking property,that is,the exceptional point(EP).Recently,creating and encircling EP in metasurfaces has triggered various progressive functionalities,including polarization control and optical holographic encoding.However,existing topological metasurfaces mostly rely on plasmonic materials,which introduce inevitable ohmic losses and limit their compatibility with mainstream all-dielectric meta-devices.Additionally,conventional free-space configurations also hinder the integration of multiple meta-devices in compact platforms.Here,an on-chip topological metasurface is experimentally demonstrated to create and engineer the topological phase encircling the EP in all-dielectric architecture.By massively screening the Si meta-atom geometry on the Si3N4 waveguide,a 2π-topological phase shift is obtained by encircling the EP.Through combining with the Pancharatnam-Berry(PB)phase,we decouple the orthogonal circular polarization channels and unfold the independent encoding freedom for different holographic generations.As a proof of concept,the proposed on-chip topological metasurface enables floating holographic visualizations in real-world scenarios,functioning as practical augmented reality(AR)functionalities.Such the all-dielectric on-chip scheme eliminates ohmic losses and enables compatible integration with other on-chip meta-devices,thus suggesting promising applications in next-generation AR devices,multiplexing information storage,and advanced optical displays.展开更多
Thermal conductivity is one of the most fundamental physical properties,playing a crucial role in a wide range of applications.In thermoelectric materials,which enable the direct conversion of heat into electricity,lo...Thermal conductivity is one of the most fundamental physical properties,playing a crucial role in a wide range of applications.In thermoelectric materials,which enable the direct conversion of heat into electricity,low thermal conductivity is essential to sustain a temperature gradient and enhance efficiency[1].Conversely,materials with high thermal conductivityyare becoming increasingly important in modern electronic technology.As advanced semiconductor chips and miniaturized electronic devices continue to evolve,the demand for efficient heat dissipation grows increasingly stronger[2].Effective thermal management is also critical in optoelectronics and electricvehicle-used batteries,where maintaining optimal operating temperatures is essential for performance and longevity.Given these diverse requirements,a deep understanding of thermal conductivity and the ability to tailor it for specific applications is both a scientific necessity and an engineering imperative.展开更多
Spintronics exploits magnetic order parameters to encode binary information and utilizes spin-dependent transport for data processing[1].To date,most spintronic devices have been based on ferromagnetic materials,which...Spintronics exploits magnetic order parameters to encode binary information and utilizes spin-dependent transport for data processing[1].To date,most spintronic devices have been based on ferromagnetic materials,which offer straightforward information writing and reading through manipulation and detection of their magnetization.A prototypical device is the magnetic tunnel junction(MTJ),where non-volatile memory readout is achieved via the tunneling magnetoresistance(TMR)effect—distinct resistance states arising from parallel and antiparallel alignments of ferromagnetic electrodes.MTJs serve as the building blocks of magnetic random-access memories(MRAMs),which have already found commercial applications.展开更多
Thermally activated delayed fluorescence(TADF)materials,which are constructed through intermolecular donoracceptor systems,have attracted widespread attention due to their numerous advantages,such as avoiding complica...Thermally activated delayed fluorescence(TADF)materials,which are constructed through intermolecular donoracceptor systems,have attracted widespread attention due to their numerous advantages,such as avoiding complicated synthesis and achieving a small singlet-triplet energy gap[1].展开更多
The multifrequency voltage(MFV)stress,including switching impulses and harmonics,commonly appearing in the modern power system will stimulate the multifrequency impedance dynamics behaviours of electrical insulation.T...The multifrequency voltage(MFV)stress,including switching impulses and harmonics,commonly appearing in the modern power system will stimulate the multifrequency impedance dynamics behaviours of electrical insulation.Therefore,this article presents a novel concept of insulation resilience response(IRR)by employing polymer insulation materials,which may be extended to electrical insulation resilience(EIR).The focus is on understanding reversible recovery performance and supporting physics-informed condition assessment for electrical insulation exposed to MFV.The underlying physical mechanisms and modelling methodologies are integrated to characterise the IRR behaviours of polymer insulation systems.The multifrequency dielectric/impedance properties of different resin dielectrics under diverse temperatures are comparatively investigated as proofofconcept cases.Furthermore,multidimensional sensitivity indicators are developed to quantify the electrical insulation resilience behaviour.A radar plot representation integrating resilience sensitivity indicators qualitatively assesses the IRR behaviours of polymer insulation systems.Additionally,a quantification methodology,including the resilience index(RI)and time-varied RI(TVRI),is proposed for the reversible recovery performance analysis for electrical insulation,respectively.Ultimately,an application-oriented framework derived from TVRI is provided to analyse the recovery performance evolution behaviours of electrical insulation under complex operating conditions.This offers a key theoretical foundation for insulation performance characterisation and condition analysis for high-voltage power equipment.展开更多
基金supported by the National Nature Science Foundation of China(NSFC)(Grant Nos.22275004,62274040,and 62304046)the Shanghai Science and Technology Committee(Grant No.22JC1410300)+2 种基金the Shanghai Key Laboratory of Novel Extreme Condition Materials(Grant No.22dz2260800)the National Key Research and Development Program of China(Grant No.2022YFE0137400)the Shanghai Science and Technology Innovationaction Plan(Grant No.24DZ3001200).
文摘High-pressure research has emerged as a pivotal approach for advancing our understanding and development of optoelectronic materials,which are vital for a wide range of applications,including photovoltaics,light-emitting devices,and photodetectors.This review highlights various in situ characterization methods employed in high-pressure research to investigate the optical,electronic,and structural properties of optoelectronic materials.We explore the advances that have been made in techniques such as X-ray diffraction,absorption spectroscopy,nonlinear optics,photoluminescence spectroscopy,Raman spectroscopy,and photoresponse measurement,emphasizing how these methods have enhanced the elucidation of structural transitions,bandgap modulation,performance optimization,and carrier dynamics engineering.These insights underscore the pivotal role of high-pressure techniques in optimizing and tailoring optoelectronic materials for future applications.
基金supported by the National Research Foundation of Korea(NRF)grant funded by the Korean Government(MSIT)(Nos.RS-2023-00217581 and RS-2023-00304768)the National Research Council of Science&Technology(NST)grant by the Korean Government(MSIT)(No.CAP 22073-000).
文摘Aqueous zinc-ion batteries(AZIBs)have emerged as promising,practical energy storage devices based on their non-toxic nature,environmental friendliness,and high energy density.However,excellent rate characteristics and stable long-term cycling performance are essential.These essential aspects create a need for superior cathode materials,which represents a substantial challenge.In this study,we used MXenes as a framework for NH_(4)V_(4)O_(10)(NVO)construction and developed electrodes that combined the high capacity of NVO with the excellent conductivity of MXene/carbon nanofibers(MCNFs).We explored the electrochemical characteristics of electrodes with varying NVO contents.Considering the distinctive layered structure of NVO,the outstanding conductivity of MCNFs,and the strong synergies between the two components.NVO-MCNFs exhibited better charge transfer compared with earlier materials,as well as more ion storage sites,excellent conductivity,and short ion diffusion pathways.A composite electrode with optimized NVO content exhibited an excellent specific capacitance of 360.6mAh g^(-1) at 0.5 A g^(-1) and an outstanding rate performance.In particular,even at a high current density of 10 A g^(-1),the 32NVO-MCNF exhibited impressive cycling stability:88.6%over 2500 cycles.The mechanism involved was discovered via comprehensive characterization.We expect that the fabricated nanofibers will be useful in energy storage and conversion systems.
文摘Metal-organic frameworks(MOFs)are a novel category of crystalline porous materials,which have become preferred heterogeneous catalysts for many reactions.MOFs are widely used in catalysis because of a com bination of many advantages,such as large pore dimensions and surface area,abundant active sites,and possibility to be designed and modified after synthesis.As an important branch of the MOF family,lantha nide metal-organic frameworks(Ln-MOFs)-comprising a variety of multitopic organic ligands and Ln3+ions/clusters-are a very fascinating MOF materials with complex and diverse topologies.As the functional metal center of MOFs,lanthanide metal ions have a higher coordination number and abundant coordination geometries compared with transition metal ions,which establishes the potential application of Ln-MOFs in thefield of catalysis.In addition,Ln-MOFs have the same characteristics as MOFs,including structural diver sity and tailorability,high surface area,and high thermal and chemical stability;therefore,Ln-MOFs and their derivatives are suitable for heterogeneous catalysis under various conditions.In this review,an overview of the recent developments achieved in Ln-MOF catalysis,including heterogeneous organic catalysis and photocatalysis over Ln-MOFs and their derivative materials,is provided.
文摘Multiferroic materials,which integrate ferroelectric and magnetic orders through magnetoelectric (ME) coupling, enable electric-field control of magnetism.However, bulk multiferroics face limitations, including relatively small spontaneous polarization,weak ME coupling coefficients,and limited operational stability under ambient conditions due to oxygen-vacancy-induced leakage currents, which restrict their practical applications.
文摘The deterioration of water bodies due to organic pollutants,arising from the discharge of industrial wastewater,requires the development of new functional materials such as superhydrophobic/superoleophilic materials for efficient water remediation.However,the large-scale practical applications of superhydrophobic materials are impeded by low surface energy fluorine compounds as one of the reactants in the synthesis of superhydrophobic materials,which has raised environmental issues due to their potential toxicity to humans.In addition to low surface energy,silicon-based compounds are eco-friendly and non-toxic and would be a better replacement for fluorine compounds to overcome these drawbacks.Accordingly,we have proposed a simple and fluorine-free strategy for constructing a superhydrophobic ZIF-POSS hybrid material through imine bond formation between the free aldehyde-functional group in zeolitic imidazolate frameworks(ZIF-90)and polyhedral oligomeric silsesquioxane containing amine groups(POSS-NH_(2)).Furthermore,the efficient incorporation of POSS-NH_(2)into ZIF-90 is demonstrated by FT-IR,PXRD,thermogravimetric analyses,and^(29)Si NMR and X-ray photoelectron spectroscopy.The resultant ZIF-POSS hybrid material displays an exceptionally high water contact angle of 157°and thus exhibits very high sorption selectivity and good absorbance for organic solvents from water.Consequently,ZIF-POSS@PDA@Sponge is successfully utilized for the removal of a series of organic solvents from water mixtures with a high separation efficiency of above 96%over 25 cycles of separation.More importantly,superhydrophobic ZIF-POSS and ZIF-POSS@PDA@Sponge exhibit excellent stability and durability under harsh chemical conditions which originate mainly from the mechanically and chemically inert POSS nanocage.Finally,this clearly suggests that the POSS supported zeolitic imidazolate framework(ZIF)might facilitate the rapid development of non-toxic superhydrophobic species for the excellent separation of organic solvents from water mixtures.
基金supported by the National Key R&D Program of China(No.2021YFB3800300)the National Natural Science Foundation of China(22309010,92372128)the Xiaomi Innovation Joint Fund of Beijing Municipal Natural Science Foundation(L223012).
文摘The growth of lithium dendrites and its associated challenges pose significant obstacles to the widespread adoption of lithium metal anodes.Although numerous inorganic materials offer the potential for stabilizing lithium metal anodes,trial-and-error experiments are time-consuming and cost-intensive.In this work,first,a high-throughput screening workflow integrated with machine learning and calculations has been used to identify possible materials,which incorporates several key indicators encompassing electronic conductivity,phase stability,mechanical properties,chemical stability,and lithium-ion transport performance.Four materials were used in experiments,and the results from both characterization and electrochemical testing show that HfO_(2)@PP exhibits the best performance,which includes having the highest Young’s modulus.Furthermore,an Li||Li symmetric cell assembled using HfO_(2)@PP operating at 1 mA cm^(−2)and 1 mA h cm^(−2)exhibited stable cycling for over 1000 h,while an Li||LFP cell assembled using HfO_(2)@PP has a capacity retention rate of more than 90%and an average coulombic efficiency of 99.7%after 200 cycles at 1 C.This work provides a design method and ideas for inorganic coating materials on separators for lithium metal anodes.
基金supported by the National Natural Science Foundation of China(22076116)the Sino-German Center for Research Promotion(GZ1579).
文摘Potassium ion batteries(PIBs)are important for the development of energy storage systems as an effective complement to lithium ion batteries(LIBs)owing to the abundance of potassium resources in the earth’s crust to meet the needs of large-scale energy storage systems.To this end,numerous studies have focused on anode materials,which can provide high capacity for PIBs.Bimetallic-based compounds(ABXs)achieve higher capacity and structural diversity due to their different chemical compositions and rich spatial structures.Moreover,the synergistic effect of the two metals makes the structure of ABXs more stable.Hence,ABXs are one of the most promising anode materials.This review focuses on performance optimization strategies(such as metal base selection,structural design,voltage regulation,and electrolyte optimization)and the electrochemical properties of ABXs.Finally,the current challenges and research prospectives of ABXs are presented.This review is expected to provide new perspectives and deeper insights into the study of ABXs as anode materials for PIBs and large-scale energy storage devices.
基金the National Key Research and Development Program of China(No.2022YFB3808600)the National Natural Science Foundation of China(No.12474391)+3 种基金the Fundamental Research Funds for the Central Universities(2042025kf0024)support from the National Natural Science Foundation of China(12474388)Guangdong Basic and Applied Basic Research Foundation(2025A1515011483)supported by the Center for NanoScience and Nanotechnology at Wuhan University.
文摘Classified as a non-Hermitian system,topological metasurface is one of the ideal platforms for exploring a striking property,that is,the exceptional point(EP).Recently,creating and encircling EP in metasurfaces has triggered various progressive functionalities,including polarization control and optical holographic encoding.However,existing topological metasurfaces mostly rely on plasmonic materials,which introduce inevitable ohmic losses and limit their compatibility with mainstream all-dielectric meta-devices.Additionally,conventional free-space configurations also hinder the integration of multiple meta-devices in compact platforms.Here,an on-chip topological metasurface is experimentally demonstrated to create and engineer the topological phase encircling the EP in all-dielectric architecture.By massively screening the Si meta-atom geometry on the Si3N4 waveguide,a 2π-topological phase shift is obtained by encircling the EP.Through combining with the Pancharatnam-Berry(PB)phase,we decouple the orthogonal circular polarization channels and unfold the independent encoding freedom for different holographic generations.As a proof of concept,the proposed on-chip topological metasurface enables floating holographic visualizations in real-world scenarios,functioning as practical augmented reality(AR)functionalities.Such the all-dielectric on-chip scheme eliminates ohmic losses and enables compatible integration with other on-chip meta-devices,thus suggesting promising applications in next-generation AR devices,multiplexing information storage,and advanced optical displays.
文摘Thermal conductivity is one of the most fundamental physical properties,playing a crucial role in a wide range of applications.In thermoelectric materials,which enable the direct conversion of heat into electricity,low thermal conductivity is essential to sustain a temperature gradient and enhance efficiency[1].Conversely,materials with high thermal conductivityyare becoming increasingly important in modern electronic technology.As advanced semiconductor chips and miniaturized electronic devices continue to evolve,the demand for efficient heat dissipation grows increasingly stronger[2].Effective thermal management is also critical in optoelectronics and electricvehicle-used batteries,where maintaining optimal operating temperatures is essential for performance and longevity.Given these diverse requirements,a deep understanding of thermal conductivity and the ability to tailor it for specific applications is both a scientific necessity and an engineering imperative.
文摘Spintronics exploits magnetic order parameters to encode binary information and utilizes spin-dependent transport for data processing[1].To date,most spintronic devices have been based on ferromagnetic materials,which offer straightforward information writing and reading through manipulation and detection of their magnetization.A prototypical device is the magnetic tunnel junction(MTJ),where non-volatile memory readout is achieved via the tunneling magnetoresistance(TMR)effect—distinct resistance states arising from parallel and antiparallel alignments of ferromagnetic electrodes.MTJs serve as the building blocks of magnetic random-access memories(MRAMs),which have already found commercial applications.
文摘Thermally activated delayed fluorescence(TADF)materials,which are constructed through intermolecular donoracceptor systems,have attracted widespread attention due to their numerous advantages,such as avoiding complicated synthesis and achieving a small singlet-triplet energy gap[1].
基金supported by the Science and Technology Project of State Grid Corporation of China(Grant 5500-202455120A-1-1-ZN).
文摘The multifrequency voltage(MFV)stress,including switching impulses and harmonics,commonly appearing in the modern power system will stimulate the multifrequency impedance dynamics behaviours of electrical insulation.Therefore,this article presents a novel concept of insulation resilience response(IRR)by employing polymer insulation materials,which may be extended to electrical insulation resilience(EIR).The focus is on understanding reversible recovery performance and supporting physics-informed condition assessment for electrical insulation exposed to MFV.The underlying physical mechanisms and modelling methodologies are integrated to characterise the IRR behaviours of polymer insulation systems.The multifrequency dielectric/impedance properties of different resin dielectrics under diverse temperatures are comparatively investigated as proofofconcept cases.Furthermore,multidimensional sensitivity indicators are developed to quantify the electrical insulation resilience behaviour.A radar plot representation integrating resilience sensitivity indicators qualitatively assesses the IRR behaviours of polymer insulation systems.Additionally,a quantification methodology,including the resilience index(RI)and time-varied RI(TVRI),is proposed for the reversible recovery performance analysis for electrical insulation,respectively.Ultimately,an application-oriented framework derived from TVRI is provided to analyse the recovery performance evolution behaviours of electrical insulation under complex operating conditions.This offers a key theoretical foundation for insulation performance characterisation and condition analysis for high-voltage power equipment.
