Iron-based layered double hydroxide packed with metal-organic frameworks for enhanced overall water-splitting electrocatalysis  

作　　者：Long Chen Yun Luo Zhi-Peng Yu Yi-Kun Cheng Yang Zheng Li He Jia-Hao Xiong Wen-Wen Kong 

机构地区：[1]Key Laboratory for Green Process of Chemical Engineering of Xinjiang Bingtuan,School of Chemistry and Chemical Engineering,Shihezi University,Shihezi,832003,China [2]Institute of Scientific Research,Luzhou North Chemistry Industry Co.,Ltd,Luzhou,646600,China [3]International Iberian Nanotechnology Laboratory(INL),Avenida Mestre Jose Veiga,4715-330,Braga,Portugal [4]CAS Key Laboratory of Functional Materials and Devices for Special Environments,Xinjiang Key Laboratory of Electronic Information Materials and Devices,Center of Materials Science and Optoelectronics Engineering,Xinjiang Technical Institute of Physics and Chemistry of CAS,Urumqi,830011,China

出　　处：《Tungsten》2024年第4期859-868,共10页钨科技（英文）

基　　金：supported by the Natural Science Foundation of China(51962032);the program for Strong Youth Technology Leading Talents in Bingtuan Technological Innovation Talents(2023CB008-11);the Youth Innovative Top Talents Fund,Shihezi University(CXBJ202203);the Youth Innovation Promotion Association CAS(2021433)。

摘　　要：Designing hybrid materials with numerous catalytic active sites,high specific surface area,and interfacial interactions is an effective strategy to improve electrocatalytic performance.In this work,iron-based metal organic frameworks(Fe-MOFs)@(Co,Ni)Fe-layered double hydroxide(LDH)is successfully constructed using the similar"MOF growing on LDH"strategy for oxygen evolution reaction and hydrogen evolution reaction in the alkaline electrolyte.The synthesized hybrid materials in this particular way show excellent electrochemical overall water-splitting performance with the cell voltage of 1.62 V at10 mA·cm^(-2) in the alkaline environment due to the optimized adsorption/desorption properties of metal ions on oxygencontaining species and interfacial effects of hybrid materials.Fe-MOFs@(Co,Ni)Fe-LDH also exhibits excellent hydrogen and oxygen production efficiency of 370 and 175μL·min^(-1),respectively.This work draws on an effective approach to the fabrication of MOF@LDH structures and provides new insights into overall water-splitting in alkaline conditions.

关 键 词：Metal-organic frameworks(MOFs) Layered double hydroxide ELECTROCATALYSIS Water splitting Interfacial interactions 

分 类 号：O643.36[理学—物理化学] TQ116.2[理学—化学]