析氧
海水
化学
催化作用
分解水
电解
电解水
碱性水电解
化学工程
无机化学
碱度
电化学
物理化学
电解质
电极
光催化
生物化学
海洋学
工程类
地质学
作者
Zhengliang Gong,Zhicheng Hu,Zhiyong Bai,Xiaofang Yu,Zhiliang Liu,Yan-Qin Wang
标识
DOI:10.1021/acs.inorgchem.3c01639
摘要
Oxygen evolution reaction (OER) is a limiting reaction for highly efficient water electrolysis. Thus, the development of cost-effective and highly efficient OER catalysts is the key to large-scale water electrolysis for hydrogen production. Herein, by using an interfacial engineering strategy, a unique nanoflower-like Fe1–xNix(PO3)2/Ni2P/NF heterostructure with abundant heterogeneous interfaces is successfully fabricated. The catalyst exhibits excellent OER catalytic activity in alkaline fresh water and alkaline natural seawater at high current densities, which only, respectively, requires overpotentials of 318 and 367 mV to drive 1000 mA cm–2 in fresh water and natural seawater both containing 1 M KOH. Furthermore, Fe1–xNix(PO3)2/Ni2P/NF demonstrates excellent durability, which can basically remain stable for 80 h during the electrocatalytic OER processes, respectively, in alkaline fresh water and natural seawater. This work provides a new construction strategy for designing highly efficient electrocatalysts for OER at high current densities both in alkaline fresh water and in natural seawater.
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