过电位
催化作用
析氧
钴
电解质
电化学
磷化物
无机化学
极化(电化学)
氧气
磷酸盐
化学工程
化学
材料科学
电极
物理化学
有机化学
工程类
作者
Xiujun Wang,Rong Zhang,Liang Cui,Danni Liu,Shuai Hao,Yongjun Ma,Guoping Du,Abdullah M. Asiri,Xuping Sun
标识
DOI:10.1002/anie.201610776
摘要
The topotactic conversion of cobalt phosphide nanoarray on Ti mesh into a cobalt phosphate nanoarray (Co-Pi NA) via oxidative polarization in phosphate-buffered water is presented. As a 3D oxygen evolution reaction (OER) catalyst electrode at neutral pH, the resulting Co-Pi NA/Ti shows exceptionally high catalytic activity and demands an overpotential of only 450 mV to drive a geometrical catalytic current density of 10 mA cm-2 . Notably, this catalyst also shows superior long-term electrochemical stability. The excellent catalytic activity can be attributed to that such 3D nanoarray configuration allows for the exposure of more active sites and the easier diffusion of electrolytes and oxygen.
科研通智能强力驱动
Strongly Powered by AbleSci AI