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典型文献
Synergistically enhanced activity and stability of bifunctional nickel phosphide/sulfide heterointerface electrodes for direct alkaline seawater electrolysis
文献摘要:
Direct electrolysis of seawater to generate hydrogen is an attractive but challenging renewable energy storage technology.Reasonable design of seawater electrolysis catalysts should integrate high activity for hydrogen evolution reaction(HER)/oxygen evolution reaction(OER)and enhanced physical/electro-chemical stability in seawater.Herein,we demonstrate the development of a Ni foam(NF)supported interfacial heterogeneous nickel phosphide/sulfide(Ni2P/NiS2)microsphere electrocatalyst(NiPS/NF)through a facile electrodeposition and subsequent phosphorization/sulfuration process.After NiS2 mod-ification,a charge redistribution on the heterointerface is demonstrated and a more advantageous cova-lent nature of the Ni-P bond is obtained for more easily adsorption of H*and H2O.The NiPS/NF thus yields an impressive electrocatalytic performance in 1.0 M KOH,requiring small overpotentials of 169 and 320 mV for HER and OER to obtain a high current density of 100 mA cm-2,respectively.The NiPS/NF can also work efficiently in alkaline seawater with negligible activity degradation,requiring overpoten-tials of only 188 and 344 mV for a current density of 100 mA cm-2 for HER and OER,respectively.A syn-ergistically enhanced physical/electrochemical long-term stability NiPS/NF in saline water is also demonstrated.
文献关键词:
作者姓名:
Hao-Yu Wang;Jin-Tao Ren;Lei Wang;Ming-Lei Sun;Hui-Min Yang;Xian-Wei Lv;Zhong-Yong Yuan
作者机构:
School of Materials Science and Engineering,Nankai University,Tianjin 300350,China;Key Laboratory of Advanced Energy Materials Chemistry(Ministry of Education),Nankai University,Tianjin 300071,China
文献出处:
引用格式:
[1]Hao-Yu Wang;Jin-Tao Ren;Lei Wang;Ming-Lei Sun;Hui-Min Yang;Xian-Wei Lv;Zhong-Yong Yuan-.Synergistically enhanced activity and stability of bifunctional nickel phosphide/sulfide heterointerface electrodes for direct alkaline seawater electrolysis)[J].能源化学,2022(12):66-73
A类:
NiPS,overpoten,ergistically
B类:
Synergistically,enhanced,activity,stability,bifunctional,nickel,phosphide,sulfide,heterointerface,electrodes,direct,alkaline,seawater,electrolysis,Direct,generate,hydrogen,attractive,challenging,renewable,energy,storage,technology,Reasonable,design,catalysts,should,integrate,high,evolution,reaction,HER,oxygen,OER,physical,Herein,we,development,foam,supported,interfacial,heterogeneous,Ni2P,NiS2,microsphere,electrocatalyst,through,facile,electrodeposition,subsequent,phosphorization,sulfuration,process,After,mod,ification,charge,redistribution,demonstrated,more,advantageous,cova,lent,nature,bond,obtained,easily,adsorption,H2O,thus,yields,impressive,electrocatalytic,performance,KOH,requiring,small,overpotentials,mV,current,density,mA,respectively,can,also,work,efficiently,negligible,degradation,only,syn,electrochemical,long,term,saline
AB值:
0.557309
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