Non-noble metal-based catalysts,especially stable ones,have gained increasing attentions in the field of electronically catalytic hydrogen evolution reaction(HER).In this work,an N-doped carbon confined Co–Ni alloy w...Non-noble metal-based catalysts,especially stable ones,have gained increasing attentions in the field of electronically catalytic hydrogen evolution reaction(HER).In this work,an N-doped carbon confined Co–Ni alloy with reduced graphene oxide(rGO) decoration(CoNi@N-C/rGO) was fabricated for HER.The prepared catalyst exhibited excellent HER activity in an acidic electrolyte(Tafel slope of ～133.7 m V).The results showed that the enhanced HER performance of the nanostructures is attributed to the chemical and electronic synergic effect between the confined Co–Ni alloy and r GO.Stability tests,realized via longterm potential cycles and extended electrolysis,provided the confirmation of the exceptional durability of the catalyst,which originated from the confining effect of the N-doped carbon shell.This versatile method provides a strategy for designing stable non-precious metal electrocatalysts confined by carboncoating.展开更多
Currently,the exploration of ultimate energy sources is a hot investigation area for researchers due to the swift diminution of fossil fuels and environmental pollution produced by the ignition of these fossil fuels[1...Currently,the exploration of ultimate energy sources is a hot investigation area for researchers due to the swift diminution of fossil fuels and environmental pollution produced by the ignition of these fossil fuels[1-5].Hydrogen is an ideal alternative energy carrier and is considered to solve such problems due to its high energy density,sustainability,recyclability,and zero COx emission[6-9].展开更多
基金financial support from the National Natural Science Foundation (21676129,21607063)the Science & Technology Foundation of Zhenjiang (GY2016021,GY2017001,GY2017009)Postgraduate Innovation Project of Jiangsu Province (KYLX16_0912)
文摘Non-noble metal-based catalysts,especially stable ones,have gained increasing attentions in the field of electronically catalytic hydrogen evolution reaction(HER).In this work,an N-doped carbon confined Co–Ni alloy with reduced graphene oxide(rGO) decoration(CoNi@N-C/rGO) was fabricated for HER.The prepared catalyst exhibited excellent HER activity in an acidic electrolyte(Tafel slope of ～133.7 m V).The results showed that the enhanced HER performance of the nanostructures is attributed to the chemical and electronic synergic effect between the confined Co–Ni alloy and r GO.Stability tests,realized via longterm potential cycles and extended electrolysis,provided the confirmation of the exceptional durability of the catalyst,which originated from the confining effect of the N-doped carbon shell.This versatile method provides a strategy for designing stable non-precious metal electrocatalysts confined by carboncoating.
基金The authors grateflilly acknowledge the National Natural Science Foundation of China(Grant No.21676129)the Science&Technology Foundation of Zhenjiang(GY2016021,GY2017001 and YE201709).
文摘Currently,the exploration of ultimate energy sources is a hot investigation area for researchers due to the swift diminution of fossil fuels and environmental pollution produced by the ignition of these fossil fuels[1-5].Hydrogen is an ideal alternative energy carrier and is considered to solve such problems due to its high energy density,sustainability,recyclability,and zero COx emission[6-9].
