钴铁层状双金属氢氧化物的构筑及电催化分解水性能研究  

Construction of cobalt iron layered double hydroxides andtheir electrocatalytic performance for water splitting

作　　者：黄雅荣 于润泽 关丽丽 HUANG Yarong;YU Runze;GUAN Lili(School of Materials and Metallurgy,Inner Mongolia University of Science and Technology,Baotou 014010,China)

机构地区：[1]内蒙古科技大学材料与冶金学院,内蒙古包头014010

出　　处：《功能材料》2024年第11期11125-11131,共7页Journal of Functional Materials

基　　金：国家自然科学基金(52162010);内蒙古科技大学基本科研业务费专项资金资助(2022QNJS087)。

摘　　要：由于与日俱增的能源污染以及不可再生化石燃料的大量消耗,探寻新的绿色清洁能源载体迫在眉睫。二维结构层状双金属氢氧化物在电催化分解水中表现出优异的电化学活性,但是导电性差、比表面小阻碍了性能的进一步提升。采用简便的水热法成功构筑了独特形貌的钴铁双金属层状氢氧化物(CoFe-LDHs),考察了催化剂电催化分解水性能。在1 mol/L KOH中,CoFe-LDHs-1∶1同时作为阴极和阳极在达到电流密度为10 mA/cm^(2)时仅需要施加1.62 V电压,在电催化分解水稳定性测试中也表现出卓越的催化稳定性,50 h的稳定性测试中没有出现明显的性能衰减。Due to the increasing energy pollution and the significant consumption of non-renewable fossil fuels,it is urgent to explore new green and clean energy carriers.Two dimensional layered double hydroxides exhibit excellent electrochemical catalytic activity in water splitting,but their poor conductivity and low specific surface area hinder further performance improvement.This work successfully constructed cobalt iron layered double hydroxides(CoFe-LDHs)with unique morphology by hydrothermal method,and investigated the electrocatalytic performance of catalysts for water splitting in 1 mol/L KOH.An electrolyzer with CoFe-LDHs-1∶1 as both cathode and anode shows a low voltage of 1.62 V to afford the current density of 10 mA/cm^(2).Moreover,it is no obvious degradation was detected in the water splitting stability test.

关 键 词：钴铁双金属层状氢氧化物 活性位点 电催化分解水 稳定性 

分 类 号：TB333[一般工业技术—材料科学与工程]