期刊文献+

Small-sized Ni-Co/Mo_(2)C/Co_(6)Mo_(6)C_(2)@C for efficient alkaline and acidic hydrogen evolution reaction by an anchoring calcination strategy

原文传递
导出
摘要 A novel,cheap and highly efficient Ni-Co/Mo_(2)C/Co_(6)Mo_(6)C_(2)@C nanocomposite has been successfully constructed through simple one-step carbonization method in a nitrogen atmosphere.Polyethyleneimine in the precursor can effectively anchor molybdenum-based Keggin-type polyoxometallate and NiCo-layered double hydroxide through electrostatic and coordination interactions,which avoids the aggregation of catalyst particles during the pyrolysis process.After optimization,the obtained Ni-Co/Mo_(2)C/Co_(6)Mo_(6)C_(2)@C possesses small size(3-8 nm),large specific surface area and hierarchical pore structure.More importantly,Ni-Co/Mo_(2)C/Co_(6)Mo_(6)C_(2)@C presents remarkable hydrogen evolution reaction activity with low overpotentials in 0.5 mol·L^(-1)H_(2)SO_(4)(102.3 mV)and 1 mol·L^(-1)KOH(95 mV)to afford the current density of 10 mA·cm^(-2),as well as small Tafel slopes of 82.49 and 99.92 mV·dec^(-1),respectively.Simultaneously,this catalyst also shows outstanding stability for 12 h without a significant change in current density.The excellent catalytic performance of Ni-Co/Mo_(2)C/Co_(6)Mo_(6)C_(2)@C can put down to the synergistic effect between multiple components and the small size of the catalyst.This work provides unique insights into the preparation of efficient transition metal-based catalysts for HER.
出处 《Frontiers of Chemical Science and Engineering》 SCIE EI CSCD 2024年第5期95-103,共9页 化学科学与工程前沿(英文版)
基金 This work was supported by the National Natural Science Foundation of China(Grant No.21971032) the Youth Science Research Project of Shanxi Province(Grant No.202103021223362) the Science and technology innovation project of higher education in Shanxi Province(Grant No.2021L450) the Foundation of Xinzhou Teachers University,China(Grant No.2021KY07) the State Key Laboratory of Safety and Control for Chemicals[10010104-19-ZC0613-0180].
  • 相关文献

参考文献4

二级参考文献3

共引文献3

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部