过电位
析氧
催化作用
原电池
化学工程
无定形固体
氧气
基质(水族馆)
镍
金属
材料科学
电子转移
化学
无机化学
光化学
电化学
物理化学
电极
结晶学
有机化学
地质学
工程类
海洋学
作者
Xun Sun,Xin Guan,Hao Feng,Dengchao Zheng,Wenli Tian,Chengyi Li,Chuiyu Li,Minglei Yan,Yadong Yao
标识
DOI:10.1016/j.jcis.2021.06.149
摘要
Herein, we demonstrate a direct growth of amorphous metal oxyhydroxide (AMO) attached on CeO2 by a galvanic replacement mechanism as advanced oxygen evolution reaction (OER) catalyst. In this unique structure, the CeO2 substrate not only offers high specific surface area for the formation of AMO, but also provides high conductivity, guaranteeing the promoted electron transfer for the catalytic reaction. In addition, the AMO on the surface of the CeO2 exposes abundant active sites for the OER. Benefiting from the above advantages, the as-prepared [email protected]2 supported on nickel foam ([email protected]2/NF) exhibits excellent OER performance with low overpotential of 261 mV at 10 mA cm−2, high turnover frequency of 0.07 s−1 at 20 mA cm−2 and superior stability in 1.0 M KOH.
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