Yarn-like energy storage devices are recognized for their high integrability,wearable compatibility,and mechanical flexibility.However,integrating multi-dimensional nanomaterials with varying energy storage synergies ...Yarn-like energy storage devices are recognized for their high integrability,wearable compatibility,and mechanical flexibility.However,integrating multi-dimensional nanomaterials with varying energy storage synergies in situ on a single yarn while ensuring high binding stability and energy density remains a significant challenge.Herein,the 1T/2H phase Mn-doped MoS_(2) was synthesized via a one-step hydrothermal method,optimizing the doping ratio and lattice distortion induced by cationic point defects,which effectively extends the layer spacing and mitigates the hazardous and challenging conditions typically required for the synthesis of the 1T phase.Subsequently,nano-cored-yarn electrodes were fabricated with activated carbon fibers as the core layer and CF/MnₓMoS_(2)-CNF nanofibers as the shell layer through conjugated electrospinning,followed by twisting,winding,and carbonization.Due to the unique structural design and effective defect regulation,coordination inhibits water decomposition in aqueous electrolytes at high operating voltages,resulting in the stable electrochemical performance at an output voltage of 1.6 V for the assembled nano-cored-yarn solid-state supercapacitors(NYCs).The symmetrically NYCs achieved a maximum energy density of 308.7μWh/cm^(3)(power density of 5.5 mW/cm^(3))and a maximum power density of 16.9 mW/cm^(3)(energy density of 258.1μWh/cm^(3)),which still maintained 86.4%of the original capacity after 5000 charge/discharge cycles.This research provides innovative ideas and solutions for the design and integration of nanocored-yarn capacitors characterized by a high voltage window and high energy density.展开更多
With the progress of flexible wearables,electronic devices have evolved from three-dimensional bulk materials and twodimensional films to flexible one-dimensional fiber structures.Amongst all,alternating current elect...With the progress of flexible wearables,electronic devices have evolved from three-dimensional bulk materials and twodimensional films to flexible one-dimensional fiber structures.Amongst all,alternating current electroluminescent(ACEL)fibers have received increasing attention due to their flexibility,weavability,and human-body compatibility.Nevertheless,ACEL still faces great challenges in achieving efficient color modulation,continuous preparation and device integration.Herein,a novel color-tunable ACEL fiber based on fluorescent dye-mediated omnidirectional color conversion is presented,where continuous deposition of functional materials is achieved by conjugated electrospinning and solution dip-coating techniques.Such fiber achieves uniform omnidirectional light emission while maintaining exceptional flexibility,mechanical durability,and water resistance,with additional color conversion capability.Together,these synergistic properties make them ideally suited for integration into smart textiles through weaving or hand embroidery processes.In addition,these ACEL fibers have been successfully integrated with sound sensors featuring speech recognition and volume detection,an advancement that paves the way for visual and barrier-free communication solutions for the hearing-impaired individuals,as well as early warning systems in high-noise environments.Overall,this work provides a new technological paradigm for textile-based wearable full-color displays with significant scientific and practical value in smart wearables,interactive e-textiles,and intelligent human–machine interfaces.展开更多
基金supported by National Natural Science Foundation of Hebei Province(No.E2024208048)China Postdoctoral Science Foundation Project(No.2024M760414)+1 种基金Scientific Research Project for Higher Education Institution in Hebei Province(No.BJK2023085)Introduction of Talents Research Funds for the Hebei University of Science and Technology(No.PYA2018012).
文摘Yarn-like energy storage devices are recognized for their high integrability,wearable compatibility,and mechanical flexibility.However,integrating multi-dimensional nanomaterials with varying energy storage synergies in situ on a single yarn while ensuring high binding stability and energy density remains a significant challenge.Herein,the 1T/2H phase Mn-doped MoS_(2) was synthesized via a one-step hydrothermal method,optimizing the doping ratio and lattice distortion induced by cationic point defects,which effectively extends the layer spacing and mitigates the hazardous and challenging conditions typically required for the synthesis of the 1T phase.Subsequently,nano-cored-yarn electrodes were fabricated with activated carbon fibers as the core layer and CF/MnₓMoS_(2)-CNF nanofibers as the shell layer through conjugated electrospinning,followed by twisting,winding,and carbonization.Due to the unique structural design and effective defect regulation,coordination inhibits water decomposition in aqueous electrolytes at high operating voltages,resulting in the stable electrochemical performance at an output voltage of 1.6 V for the assembled nano-cored-yarn solid-state supercapacitors(NYCs).The symmetrically NYCs achieved a maximum energy density of 308.7μWh/cm^(3)(power density of 5.5 mW/cm^(3))and a maximum power density of 16.9 mW/cm^(3)(energy density of 258.1μWh/cm^(3)),which still maintained 86.4%of the original capacity after 5000 charge/discharge cycles.This research provides innovative ideas and solutions for the design and integration of nanocored-yarn capacitors characterized by a high voltage window and high energy density.
基金supported by the Zhejiang Provincial Natural Science Foundation of China(LY21E030023)Foundation of Zhejiang Sci-Tech University Shengzhou Innovation Research Institute(SYY2024C000008).
文摘With the progress of flexible wearables,electronic devices have evolved from three-dimensional bulk materials and twodimensional films to flexible one-dimensional fiber structures.Amongst all,alternating current electroluminescent(ACEL)fibers have received increasing attention due to their flexibility,weavability,and human-body compatibility.Nevertheless,ACEL still faces great challenges in achieving efficient color modulation,continuous preparation and device integration.Herein,a novel color-tunable ACEL fiber based on fluorescent dye-mediated omnidirectional color conversion is presented,where continuous deposition of functional materials is achieved by conjugated electrospinning and solution dip-coating techniques.Such fiber achieves uniform omnidirectional light emission while maintaining exceptional flexibility,mechanical durability,and water resistance,with additional color conversion capability.Together,these synergistic properties make them ideally suited for integration into smart textiles through weaving or hand embroidery processes.In addition,these ACEL fibers have been successfully integrated with sound sensors featuring speech recognition and volume detection,an advancement that paves the way for visual and barrier-free communication solutions for the hearing-impaired individuals,as well as early warning systems in high-noise environments.Overall,this work provides a new technological paradigm for textile-based wearable full-color displays with significant scientific and practical value in smart wearables,interactive e-textiles,and intelligent human–machine interfaces.
