材料科学
过电位
锡
析氧
纳米线
阳极
催化作用
化学工程
电解质
计时安培法
氧化锡
异质结
热稳定性
纳米技术
电极
电化学
氧化物
冶金
光电子学
物理化学
化学
有机化学
工程类
循环伏安法
作者
Dedan Mou,R.Y. Wang,Yonghao Gan,Han Yang,Y.G. Wang,Kai Huang,R. Zhang
标识
DOI:10.1016/j.matlet.2020.128494
摘要
A nanowires array with CoO/TiN heterostructure has been constructed and applied as the binder- and conductive-agent-free anode for oxygen evolution reaction. A well-aligned CoO/TiN nanowires composite array was obtained by electrodeposition and subsequently thermal treatment. Such an anode reveals overpotential of 270 mV at current density of 10 mA cm−2 in 1.0 M KOH solution, which is much lower than comparison catalysts. Moreover, CoO/TiN catalyst exhibits good stability which can maintain the vast majority of OER activities (more than 90% of initial current densities) for a 15 h long-termed chronoamperometry test. The enhanced performance should be attributed to the synergistic effect of heterostructure and advantages of the well-aligned CoO/TiN nanowires morphology which could largely increase the amount of contact areas between electrolyte and active sites.
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