The rational construction of heterogeneous interfacial engineering presents a critical strategy for advancing efficient electrochemical water-splitting development.Here,a bimetallic sulfide-coupled MoNi alloy heterost...The rational construction of heterogeneous interfacial engineering presents a critical strategy for advancing efficient electrochemical water-splitting development.Here,a bimetallic sulfide-coupled MoNi alloy heterostructure catalyst(VMoS/MoNi)is synthesized via hydrothermal and sulfidation methods for high-performance alkaline water electrolysis.Benefiting from interfacial coupling within the VMoS/MoNi catalyst,the active sites are enriched,and electron transfer is promoted,leading to enhanced synergy and collaboration in electrocatalytic reactions.As a result,at 10 mA·cm^(-2),the VMoS/MoNi catalyst demonstrates excellent HER(26 mV)and OER(223 mV)performance.VMoS/MoNi catalysts used as double electrode in an alkaline electrolytic assembly are noteworthy for achieving a cell voltage of 1.56 V at 10 mA·cm^(-2),a significant improvement above most previously reported bifunctional electrocatalysts.This result provides further momentum for the design of heterostructure electrocatalysts,advancing the study of renewable energy conversion and storage.展开更多
基金supported by the National Natural Science Foundation of China(No.22369025)Yunnan Applied Basic Research Projects(Nos.202201AT070095,202301AT070098,202301AT070107,202401AT070438,and 202401AT070433)+2 种基金Education Reform Research Project of Yunnan University(No.2021Z06)Yunnan University Graduate Student Practice and Innovation Program(Nos.ZC-23234269,ZC-23235291,KC-23236398,and KC-23234063)Yunnan Revitalization Talent Support Program。
文摘The rational construction of heterogeneous interfacial engineering presents a critical strategy for advancing efficient electrochemical water-splitting development.Here,a bimetallic sulfide-coupled MoNi alloy heterostructure catalyst(VMoS/MoNi)is synthesized via hydrothermal and sulfidation methods for high-performance alkaline water electrolysis.Benefiting from interfacial coupling within the VMoS/MoNi catalyst,the active sites are enriched,and electron transfer is promoted,leading to enhanced synergy and collaboration in electrocatalytic reactions.As a result,at 10 mA·cm^(-2),the VMoS/MoNi catalyst demonstrates excellent HER(26 mV)and OER(223 mV)performance.VMoS/MoNi catalysts used as double electrode in an alkaline electrolytic assembly are noteworthy for achieving a cell voltage of 1.56 V at 10 mA·cm^(-2),a significant improvement above most previously reported bifunctional electrocatalysts.This result provides further momentum for the design of heterostructure electrocatalysts,advancing the study of renewable energy conversion and storage.
