纳米棒
海水
分解水
过电位
电解
磷化物
镍
碱性水电解
催化作用
电解水
材料科学
电解质
碱土金属
电化学
碱性电池
无机化学
热液循环
化学
化学工程
金属
纳米技术
电极
冶金
地质学
光催化
物理化学
工程类
生物化学
海洋学
作者
Mei Yang,Shilin Zhang,Tian Wang,Beibei Shi,Jingyan Liu,Yili Tang,Zonglin Xu,Muhammad Tariq Sarwar,Aidong Tang,Huaming Yang
出处
期刊:ACS Sustainable Chemistry & Engineering
[American Chemical Society]
日期:2022-09-02
卷期号:10 (37): 12423-12432
被引量:6
标识
DOI:10.1021/acssuschemeng.2c04034
摘要
The key to the development of non-noble metal catalysts with high activity and durability for the hydrogen evolution reaction (HER) in alkaline water/seawater conditions is to construct multi-interface electrocatalysts. Herein, the CoMoO4 nanorod arrays grown on foam nickel (NF) was first prepared by a hydrothermal method. Then, Ni(PO3)2-CoP4 with multi-interface was prepared by soaking the nanorod arrays into a nickel nitrate solution and then by phosphating via chemical vapor deposition. The Ni(PO3)2-CoP4/CoMoO4/NF electrode exhibits superior HER electrocatalytic performance under alkaline conditions with an ultralow overpotential of 79 mV@100 mA·cm–2, which outperforms other reported earth–abundant transition-metal phosphide catalysts. It also maintains long-term durability in alkaline water/seawater electrolytes in 60 h at a constant 100 mA·cm–2. In the alkaline natural seawater electrolyte, Ni(PO3)2-CoP4/CoMoO4/NF (−)||NiFe LDH (+) pair has good long-term stability of 60 h for the voltage of only 1.60 V@100 mA·cm–2. The excellent performance is attributed to the plentiful active sites and the rapid electron-transfer rate. This work affords a new path to rationalize the design strategy of low-cost and multi-interface 3D catalysts for alkaline water/seawater electrolysis.
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