Heterostructures by Templated Synthesis of Layered Double Hydroxide to Modulate the Electronic Structure of Nickel Sites for a Highly Efficient Oxygen Evolution Reaction
Kexin Xu,
Haihong Zhong,
Xuying Li,
Jie Song,
Luis Alberto Estudillo‐Wong,
Jun Yang,
Yongjun Feng,
Xiaojuan Zhao,
Nicolas Alonso‐Vante
Affiliations
Kexin Xu
State Key Laboratory of Chemical Resource Engineering Beijing Engineering Center for Hierarchical Catalysts College of Chemistry Beijing University of Chemical Technology No. 15 Beisanhuan East Road Beijing 100029 China
Haihong Zhong
School of Chemistry and Chemical Engineering Hainan University No. 58 Renmin Road Haikou 570228 P. R. China
Xuying Li
State Key Laboratory of Chemical Resource Engineering Beijing Engineering Center for Hierarchical Catalysts College of Chemistry Beijing University of Chemical Technology No. 15 Beisanhuan East Road Beijing 100029 China
Jie Song
State Key Laboratory of Chemical Resource Engineering Beijing Engineering Center for Hierarchical Catalysts College of Chemistry Beijing University of Chemical Technology No. 15 Beisanhuan East Road Beijing 100029 China
Luis Alberto Estudillo‐Wong
Departamento de Biociencias e Ingeniería CIIEMAD‐IPN Instituto Politécnico Nacional Ciudad de México C.P. 07340 Mexico
Jun Yang
State Key Laboratory of Multiphase Complex Systems Institute of Process Engineering Chinese Academy of Sciences Beijing 100190 China
Yongjun Feng
State Key Laboratory of Chemical Resource Engineering Beijing Engineering Center for Hierarchical Catalysts College of Chemistry Beijing University of Chemical Technology No. 15 Beisanhuan East Road Beijing 100029 China
Xiaojuan Zhao
Institute of High Energy Physics Chinese Academy of Science Beijing 100190 China
Nicolas Alonso‐Vante
IC2MP UMR‐CNRS 7285 University of Poitiers Poitiers Cedex F‐86073 France
The design and development of highly efficient electrocatalysts for oxygen evolution reaction (OER) are critical for renewable energy generation. Ni‐based electrocatalysts are widely used in the water electrolysis process. In this work, heterostructure consisting of selenides and layered double hydroxides (LDH) named (Co, Ni)Se4@NiFe‐LDH, are prepared by an LDH‐based strategy, in which the electronic structure of Ni active sites is regulated by interfacial electron interaction. The (Co, Ni)Se4@NiFe‐LDH shows an optimized charge distribution of Ni sites and excellent catalytic activity. The effective charge modulation results in lowering the energy barrier of OOH* intermediate formation and adequate adsorption strength of the intermediates on Ni‐active sites, which improves the kinetics of OER. Specifically, the (Co, Ni)Se4@NiFe‐LDH only requires an overpotential of 237 mV to reach the current density of 10 mA cm−2 under alkaline conditions. The results of this work demonstrate that reasonable engineering of heterostructure is an effective strategy to improve the intrinsic property of OER electrocatalysts for water splitting.
