析氧
过电位
磷化物
电催化剂
氢氧化物
材料科学
催化作用
纳米线
化学工程
海水
分解水
电解
纳米技术
镍
无机化学
化学
电化学
电极
冶金
光催化
生物化学
海洋学
物理化学
地质学
电解质
工程类
作者
Guowang Gao,Ruiqing Zhao,Yajun Wang,Xiao Ma,Yan Li,Jian Zhang,Ji-Sen Li
标识
DOI:10.1016/j.cclet.2023.109181
摘要
Searching for efficient nonprecious metal-based catalysts toward oxygen evolution reaction (OER) are of significance for seawater electrolysis. Herein, a core-shell-structured hybrid of cobalt phosphide nanowires@NiFe layered double hydroxide nanosheets grown on conductive nickel foam (CoP@NiFe LDH/NF) is prepared by a feasible approach at low temperature. The charming structure can provide numerous phosphide/hydroxide heterogenous interfaces, expose abundant active sites, and boost electron/mass transfer, synergistically enhancing catalytic OER activity. When employed as an electrocatalyst toward the OER, the resultant CoP@NiFe LDH/NF only requires a small overpotential of 287 mV to provide 300 mA/cm2 current density as well as long-time durability in 1.0 mol/L KOH seawater. The regulation of electronic states and surface reconstruction synergistically contribute to highly efficient seawater oxidation. This work provides an opportunity to construct efficient and inexpensive electrocatalysts for hydrogen production.
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