聚吡咯
材料科学
分解水
纳米片
电化学
析氧
化学工程
催化作用
基质(水族馆)
电解水
电解
无机化学
电极
纳米技术
物理化学
化学
光催化
生物化学
海洋学
地质学
工程类
电解质
作者
Zhong Yao Duan,Mei Zhang,Qiqi Mao,Kai Deng,Hongjie Yu,Ziqiang Wang,You Xu,Liang Wang,Hongjing Wang
出处
期刊:Nanotechnology
[IOP Publishing]
日期:2023-04-19
卷期号:34 (27): 275401-275401
被引量:3
标识
DOI:10.1088/1361-6528/acca23
摘要
The design of electrocatalysts with excellent activity and stability for overall water splitting is highly desirable, and remains a challenge. Constructing heterojunctions onto the same substrate is beneficial for the integration of a water-splitting reaction. Herein, self-supported IrNi/Ni(OH)2@PPy and IrNi/Ni(OH)2@FeOOH are fabricated by coupling polypyrrole (PPy) and iron oxyhydroxide (FeOOH) on IrNi/Ni(OH)2nanosheets array, respectively. Benefiting from the nanosheet structure, composition, and heterogeneous interface, the as-constructed IrNi/Ni(OH)2@PPy and IrNi/Ni(OH)2@FeOOH catalysts can efficiently drive the hydrogen evolution reaction and oxygen evolution reaction, respectively. Moreover, the electrolyzer consisting of IrNi/Ni(OH)2@PPy and IrNi/Ni(OH)2@FeOOH for water splitting requires only a low cell voltage of 1.49 V to deliver 10 mA cm-2. This study provides a useful strategy for constructing efficient electrocatalysts by synergistic composition modulation and interface engineering.
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