Although transition metal phospho-sulfides deliver outstanding electrochemical performance,complex preparation methods hindered their further development.Herein,we report a facile one-step electrodeposition approach t...Although transition metal phospho-sulfides deliver outstanding electrochemical performance,complex preparation methods hindered their further development.Herein,we report a facile one-step electrodeposition approach to deposit interconnected nanowalls-like nickel cobalt phospho-sulfide(Ni-Co-P-S)nanosheets onto the surface of carbon cloth.The thin Ni-Co-P-S nanosheets with multi-components and synergetic effects delivered rich active sites,further enhancing reversible capacitance.Therefore,the as-prepared Ni-Co-P-S electrode materials exhibit excellent electrochemical performance in a three-electrode system,showcasing a high specific capacitance of 2744 F/g at 4 A/g.The full supercapacitors based on Ni-Co-P-S as positive electrode and active carbon as negative electrode showcase a high specific capacitance of 110.9 F/g at 1 A/g,impressive energy density of 39.4 Wh/kg at a power density of 797.5 W/kg in terms of excellent cycling stability(91.87%retention after 10,000 cycles).This simple electrode position strategy for synthesizing Ni-Co-P-S can be extended to prepare electrode materials for various sustainable electrochemical energy storage/conversion technologies.展开更多
基金financially supported by the National Natural Science Foundation of China(Nos.52073137,21704038,51763018)the NSFC-DFG Joint Research Project(No.51761135114)the Natural Science Foundation of Jiangxi Province(Nos.20192BCB23001,20202ZDB01009).
文摘Although transition metal phospho-sulfides deliver outstanding electrochemical performance,complex preparation methods hindered their further development.Herein,we report a facile one-step electrodeposition approach to deposit interconnected nanowalls-like nickel cobalt phospho-sulfide(Ni-Co-P-S)nanosheets onto the surface of carbon cloth.The thin Ni-Co-P-S nanosheets with multi-components and synergetic effects delivered rich active sites,further enhancing reversible capacitance.Therefore,the as-prepared Ni-Co-P-S electrode materials exhibit excellent electrochemical performance in a three-electrode system,showcasing a high specific capacitance of 2744 F/g at 4 A/g.The full supercapacitors based on Ni-Co-P-S as positive electrode and active carbon as negative electrode showcase a high specific capacitance of 110.9 F/g at 1 A/g,impressive energy density of 39.4 Wh/kg at a power density of 797.5 W/kg in terms of excellent cycling stability(91.87%retention after 10,000 cycles).This simple electrode position strategy for synthesizing Ni-Co-P-S can be extended to prepare electrode materials for various sustainable electrochemical energy storage/conversion technologies.
