Photothermal conversion attracted lots of attention in the past years and sorts of materials were explored to enhance photothermal efficiency.In the past years,solar-driven desalination by photothermal conversion was ...Photothermal conversion attracted lots of attention in the past years and sorts of materials were explored to enhance photothermal efficiency.In the past years,solar-driven desalination by photothermal conversion was proposed to release the shortage of fresh water and then it was considered much more important to prepare photothermal materials on large scales with high performance and low cost.In this review,we summarized the works on carbon-based photothermal materials in the past years,including the preparation as well as their application in steam generation.From these works,we give an outlook on the difficulties and chances of how to design and prepare carbon-based photothermal materials.展开更多
We report the fabrication of polymer/inorganic hybrid solar cells （HSCs） based on CdSe nanorods （NRs） and the semiconducting polymer PTB7. The power conversion efficiency of HSCs can be significantly enhanced by e...We report the fabrication of polymer/inorganic hybrid solar cells （HSCs） based on CdSe nanorods （NRs） and the semiconducting polymer PTB7. The power conversion efficiency of HSCs can be significantly enhanced by engineering the polymer/nanocrystal interface with ethanedithiol （EDT） and 1,4-benzenedithiol （1,4-BDT） treatments and reached 2.58% and 2.79%, respectively. These results were preferable to that of a pyridine-coated NR-based device （1.75%）. This improvement was attributed to the thiol groups of EDT and 1,4-BDT, which can tightly coordinate the Cd ions to form Cd-thialate on CdSe NR surfaces, thereby effectively passivating the NR surface and reducing the active layer defects. Therefore, the rate of exciton generation and dissociation was enhanced and led to the improvement of the device performance.展开更多
The strong aggregation tendency of hole transport material poly[3-(4-carboxylbutyl)thiophene-K(P3CT-K)restricts its further application in inverted perovskite solar cells(PSCs).Here,we report an effective strategy to ...The strong aggregation tendency of hole transport material poly[3-(4-carboxylbutyl)thiophene-K(P3CT-K)restricts its further application in inverted perovskite solar cells(PSCs).Here,we report an effective strategy to address this issue and achieve the superior performance of inverted methylammonium lead triiodide(MAPbI3)PSCs,in which graphdiyne oxide(GDYO)doped P3CT-K nanocomposites are applied as the hole transport nanolayer(HTL).It is revealed that the strongπ–πstacking interaction occurs between GDYO and P3CT-K,which is proved by the blue shift of the absorption peak of P3CT-K nanolayer.The aggregation control via GDYO contributes to the property improvement of P3CT-K HTL.Moreover,the homogeneous coverage induces the growth of perovskite grain with larger size than that based on the undoped one.As a result,the optimized surface morphology,enhanced conductivity,charge extraction as well as better crystal quality,finally improve the device performance.An optimal power conversion efficiency of 19.06%is achieved,with simultaneously improved fill factor and short circuit current density.This work presents the potential of functional graphdiyne(GDY)in the development of highly efficient photovoltaic device.展开更多
Hydrogen energy is considered as an ideal energy with the advantages of green,sustainability,and high energy density,and water splitting is one of the efficient strategies for green hydrogen without carbon emission.As...Hydrogen energy is considered as an ideal energy with the advantages of green,sustainability,and high energy density,and water splitting is one of the efficient strategies for green hydrogen without carbon emission.As for cathodic hydrogen evolution reaction(HER),besides the Pt-based electrocatalysts with excellent electrocatalytic activities on HER,transition metal nitrides(TMNs)as cheap and facile-prepared electrocatalysts have shown remarkable electrocatalytic activities.Incorporation of N atom in metal interstitial lattice results in the unique structure of TMN with high electronic conductivity,strong chemical stability,and d-band contraction.Although the intrinsic electrocatalytic activities of TMNs are mostly lower than those of Pt,it also attracted much attention to the development of TMN with higher intrinsic activity by electronic structure modulation.Here,we review the recent improvement strategies for the intrinsic electrocatalytic activities of TMN catalysts on HER by electronic structure modulation,such as facet,alloying,doping,vacancy,heterostructure,and hybridization.Some important breakthroughs of TMNs have been made;however,the scale application of TMNs with high activity in commercial water electrolyzer is urgent to explore.The future development of TMNs is proposed to focus on developing facile synthesis methods,elucidating regulation mechanism and catalytic mechanism,and enhancing activity and stability.展开更多
Lithium-sulfur batteries are considered important devices for the power of movable equipment,but there are still some challenges that limit their applications,such as how to obtain a cathode for high sulfide adsorptio...Lithium-sulfur batteries are considered important devices for the power of movable equipment,but there are still some challenges that limit their applications,such as how to obtain a cathode for high sulfide adsorption and rapid conversion.Here,a new strategy is proposed to enhance the performance of lithium-sulfur batteries by growing 3-dimensional hydrogen-substituted graphdiyne(HsGDY)layers on Ni foam via Glaser cross-coupling reaction to anchor MoS_(2)/Ni_(3)S_(2),enhancing the conductivity of host material of S.The results show that the 3-dimensional HsGDY framework enables the fast adsorption of lithium polysulfides and the Ni_(3)S_(2)/MoS_(2) performs as the reaction center with a low charge transfer resistance.The charge capacity of Ni@HsGDY/MoS_(2)/Ni_(3)S_(2) cell is up to 1,234.7 mAh·g^(−1) at the first circle,and the specific capacity keeps 486 mAh·g^(−1) after 500 cycles at a current density of 2 C.The incorporation of HsGDY into the cathode promotes the adsorption and the conversion of polysulfides,paving a path to obtain lithium-sulfur batteries with high energy density.展开更多
Electrocatalytic water splitting is crucial to renewable and clean hydrogen generation.Achieving high efficiency and stability in hydrogen generation by freshwater/seawater electrolysis at a high current density(HCD)u...Electrocatalytic water splitting is crucial to renewable and clean hydrogen generation.Achieving high efficiency and stability in hydrogen generation by freshwater/seawater electrolysis at a high current density(HCD)using low-cost electrode materials is of utmost importance for the future hydrogen economy.However,conventional freshwater/seawater electrolysis suffers from low current density due to inefficient electrocatalysts and competitive reactions of the chlorine evolution reaction(ClER),consequently hampering its industrial adoption.Advanced surface and interface engineering techniques are essential for the development of efficient and long-lasting electrodes for freshwater and seawater electrolysis at HCD.In the review,we begin by discussing the fundamental aspects of freshwater/seawater splitting,focusing on recent advancements and strategies to increase the efficiency at HCD.We then comprehensively discuss the rational design strategies for the hydrogen evolution reaction(HER)and oxygen evolution reaction(OER)at HCD together with the associated fundamental electrode reactions by considering the thermodynamic and kinetic aspects of the catalytic efficiency,selectivity,and corrosion resistance.It is followed by a discussion of some existing issues and limitations of HCD freshwater/seawater splitting and viable solutions.Finally,the issues facing the field and possible future research directions for efficient large-scale industrial water splitting are discussed.展开更多
In the Research Article“HsGDY on Ni Foam for Loading MoS_(2)/Ni_(3)S_(2) to Enhance the Performance on Lithium-Sulfur Batteries”[1],the publisher made an error.“235.0 and 232.0 eV from 235.7 and 232.0 eV”should be...In the Research Article“HsGDY on Ni Foam for Loading MoS_(2)/Ni_(3)S_(2) to Enhance the Performance on Lithium-Sulfur Batteries”[1],the publisher made an error.“235.0 and 232.0 eV from 235.7 and 232.0 eV”should be replaced with“235.4 and 232.3 eV from 235.7 and 232.4 eV”in the sentence,“As shown in Fig.4B,after adsorbing the Li2S6,the Mo 3d_(3/2) and Mo 3d_(5/2) XPS peaks of Mo^(4+)in MoS_(2) shift toward lower binding energies of 235.0 and 232.0 eV from 235.7 and 232.0 eV,respectively,indicating increased electron density at the metal center.”This has now been corrected in the PDF and HTML(full text).展开更多
基金Guangdong Basic and Applied Basic Research Foundation(2021A1515110152,2022A1515240007,and 2023A1515010562)Special Fund for the Sci-tech Innovation Strategy of Guangdong Province(STKJ202209083,STKJ202209066,2020ST006,210719165864287)+4 种基金Characteristic Innovation Project of Colleges and Universities in Guangdong(2021KTSCX030)Scientific Research Foundation of Guangdong Laboratory of Chemistry and Fine Chemical Industry Jieyang Center(QD2221007)2020 Li Ka Shing Foundation Cross-Disciplinary Research Grant(2020LKSFG01A)STU Scientific Research Initiation Grant(NTF20005,NTF22018)Science and technology program of Guangzhou(202102021110).
文摘Photothermal conversion attracted lots of attention in the past years and sorts of materials were explored to enhance photothermal efficiency.In the past years,solar-driven desalination by photothermal conversion was proposed to release the shortage of fresh water and then it was considered much more important to prepare photothermal materials on large scales with high performance and low cost.In this review,we summarized the works on carbon-based photothermal materials in the past years,including the preparation as well as their application in steam generation.From these works,we give an outlook on the difficulties and chances of how to design and prepare carbon-based photothermal materials.
文摘We report the fabrication of polymer/inorganic hybrid solar cells （HSCs） based on CdSe nanorods （NRs） and the semiconducting polymer PTB7. The power conversion efficiency of HSCs can be significantly enhanced by engineering the polymer/nanocrystal interface with ethanedithiol （EDT） and 1,4-benzenedithiol （1,4-BDT） treatments and reached 2.58% and 2.79%, respectively. These results were preferable to that of a pyridine-coated NR-based device （1.75%）. This improvement was attributed to the thiol groups of EDT and 1,4-BDT, which can tightly coordinate the Cd ions to form Cd-thialate on CdSe NR surfaces, thereby effectively passivating the NR surface and reducing the active layer defects. Therefore, the rate of exciton generation and dissociation was enhanced and led to the improvement of the device performance.
基金supported by the National Natural Science Foundation of China(No.21975273)Scientific Research Starting Foundation of Outstanding Young Scholar of Shandong University,and the Fundamental Research Funds of Shandong University+2 种基金We thank Guangdong Basic and Applied Basic Research Foundation(No.2019A1515012156)2020 Li Ka Shing Foundation Cross Disciplinary Research Grant(No.2020LKSFG01A)Department of Education of Guangdong Province(Nos.2021LSYS009 and 2021KCXTD032).
文摘The strong aggregation tendency of hole transport material poly[3-(4-carboxylbutyl)thiophene-K(P3CT-K)restricts its further application in inverted perovskite solar cells(PSCs).Here,we report an effective strategy to address this issue and achieve the superior performance of inverted methylammonium lead triiodide(MAPbI3)PSCs,in which graphdiyne oxide(GDYO)doped P3CT-K nanocomposites are applied as the hole transport nanolayer(HTL).It is revealed that the strongπ–πstacking interaction occurs between GDYO and P3CT-K,which is proved by the blue shift of the absorption peak of P3CT-K nanolayer.The aggregation control via GDYO contributes to the property improvement of P3CT-K HTL.Moreover,the homogeneous coverage induces the growth of perovskite grain with larger size than that based on the undoped one.As a result,the optimized surface morphology,enhanced conductivity,charge extraction as well as better crystal quality,finally improve the device performance.An optimal power conversion efficiency of 19.06%is achieved,with simultaneously improved fill factor and short circuit current density.This work presents the potential of functional graphdiyne(GDY)in the development of highly efficient photovoltaic device.
基金This work was supported by the National Natural Science Foundation of China(52101251)Natural Science Foun-dation of Hebei Province(B2021208030)+1 种基金College Students Inno-vation Training Program of Hebei Province(S2021113409001)STU Scientific Research Initiation Grant(NTF22018).Author contributions:J.S.,M.J.,and C.Z.led the project.The manuscript was primarily written by H.-M.Z.,and J.-J.W.,Y.M.,F.L.,and J.X.revised it.All authors contributed to the manu-script.Competing interests:The authors declare that they have no competing interests.
文摘Hydrogen energy is considered as an ideal energy with the advantages of green,sustainability,and high energy density,and water splitting is one of the efficient strategies for green hydrogen without carbon emission.As for cathodic hydrogen evolution reaction(HER),besides the Pt-based electrocatalysts with excellent electrocatalytic activities on HER,transition metal nitrides(TMNs)as cheap and facile-prepared electrocatalysts have shown remarkable electrocatalytic activities.Incorporation of N atom in metal interstitial lattice results in the unique structure of TMN with high electronic conductivity,strong chemical stability,and d-band contraction.Although the intrinsic electrocatalytic activities of TMNs are mostly lower than those of Pt,it also attracted much attention to the development of TMN with higher intrinsic activity by electronic structure modulation.Here,we review the recent improvement strategies for the intrinsic electrocatalytic activities of TMN catalysts on HER by electronic structure modulation,such as facet,alloying,doping,vacancy,heterostructure,and hybridization.Some important breakthroughs of TMNs have been made;however,the scale application of TMNs with high activity in commercial water electrolyzer is urgent to explore.The future development of TMNs is proposed to focus on developing facile synthesis methods,elucidating regulation mechanism and catalytic mechanism,and enhancing activity and stability.
基金Guangdong Basic and Applied Basic Research Foundation(2021A1515110152,2022A1515240007,and 2023A1515010562)Special Fund for the Sci-tech Innovation Strategy of Guangdong Province(STKJ202209083,STKJ202209066,2020ST006,and 210719165864287)+3 种基金Characteristic Innovation Project of Colleges and Universities in Guangdong(2021KTSCX030)Scientific Research Foundation of Shantou University(NTF20005 and NTF22018)Scientific Research Foundation of Guangdong Laboratory of Chemistry and Fine Chemical Industry Jieyang Center(QD2221007)2020 Li Ka Shing Foundation Cross-Disciplinary Research Grant(2020LKSFG01A).
文摘Lithium-sulfur batteries are considered important devices for the power of movable equipment,but there are still some challenges that limit their applications,such as how to obtain a cathode for high sulfide adsorption and rapid conversion.Here,a new strategy is proposed to enhance the performance of lithium-sulfur batteries by growing 3-dimensional hydrogen-substituted graphdiyne(HsGDY)layers on Ni foam via Glaser cross-coupling reaction to anchor MoS_(2)/Ni_(3)S_(2),enhancing the conductivity of host material of S.The results show that the 3-dimensional HsGDY framework enables the fast adsorption of lithium polysulfides and the Ni_(3)S_(2)/MoS_(2) performs as the reaction center with a low charge transfer resistance.The charge capacity of Ni@HsGDY/MoS_(2)/Ni_(3)S_(2) cell is up to 1,234.7 mAh·g^(−1) at the first circle,and the specific capacity keeps 486 mAh·g^(−1) after 500 cycles at a current density of 2 C.The incorporation of HsGDY into the cathode promotes the adsorption and the conversion of polysulfides,paving a path to obtain lithium-sulfur batteries with high energy density.
基金support from the National Natural Science Foundation of China(grant no.U2004210)the Basic Research Program of Shenzhen Municipal Science and Technology Innovation Committee(grant nos.JCYJ20210324141613032 and JCYJ202308073003128)+4 种基金the Special Fund Project for Science and Technology Innovation Strategy of Guangdong Province(grant nos.STKJ202209083 and STKJ202209077)Guangdong Basic and Applied Basic Research Foundation(grant no.2022A1515240007)Jieyang Science and Technology Project(grant no.skjcx039)City University of Hong Kong Strategic Research Grant(grant no.SRG 7005505)City University of Hong Kong Donation Research Grant(grant no.DON-RMG 9229021).
文摘Electrocatalytic water splitting is crucial to renewable and clean hydrogen generation.Achieving high efficiency and stability in hydrogen generation by freshwater/seawater electrolysis at a high current density(HCD)using low-cost electrode materials is of utmost importance for the future hydrogen economy.However,conventional freshwater/seawater electrolysis suffers from low current density due to inefficient electrocatalysts and competitive reactions of the chlorine evolution reaction(ClER),consequently hampering its industrial adoption.Advanced surface and interface engineering techniques are essential for the development of efficient and long-lasting electrodes for freshwater and seawater electrolysis at HCD.In the review,we begin by discussing the fundamental aspects of freshwater/seawater splitting,focusing on recent advancements and strategies to increase the efficiency at HCD.We then comprehensively discuss the rational design strategies for the hydrogen evolution reaction(HER)and oxygen evolution reaction(OER)at HCD together with the associated fundamental electrode reactions by considering the thermodynamic and kinetic aspects of the catalytic efficiency,selectivity,and corrosion resistance.It is followed by a discussion of some existing issues and limitations of HCD freshwater/seawater splitting and viable solutions.Finally,the issues facing the field and possible future research directions for efficient large-scale industrial water splitting are discussed.
文摘In the Research Article“HsGDY on Ni Foam for Loading MoS_(2)/Ni_(3)S_(2) to Enhance the Performance on Lithium-Sulfur Batteries”[1],the publisher made an error.“235.0 and 232.0 eV from 235.7 and 232.0 eV”should be replaced with“235.4 and 232.3 eV from 235.7 and 232.4 eV”in the sentence,“As shown in Fig.4B,after adsorbing the Li2S6,the Mo 3d_(3/2) and Mo 3d_(5/2) XPS peaks of Mo^(4+)in MoS_(2) shift toward lower binding energies of 235.0 and 232.0 eV from 235.7 and 232.0 eV,respectively,indicating increased electron density at the metal center.”This has now been corrected in the PDF and HTML(full text).
