过电位
电催化剂
析氧
氢氧化物
石墨烯
催化作用
贵金属
材料科学
化学工程
协同催化
化学
电化学
无机化学
层状双氢氧化物
纳米技术
电极
物理化学
有机化学
工程类
作者
Xia Long,Jinkai Li,Shuang Xiao,Keyou Yan,Zilong Wang,Haining Chen,Shihe Yang
标识
DOI:10.1002/anie.201402822
摘要
Abstract Cost‐effective electrocatalysts for the oxygen evolution reaction (OER) are critical to energy conversion and storage processes. A novel strategy is used to synthesize a non‐noble‐metal‐based electrocatalyst of the OER by finely combining layered FeNi double hydroxide that is catalytically active and electric conducting graphene sheets, taking advantage of the electrostatic attraction between the two positively charged nanosheets. The synergy between the catalytic activity of the double hydroxide and the enhanced electron transport arising from the graphene resulted in superior electrocatalytic properties of the FeNi‐GO hybrids for the OER with overpotentials as low as 0.21 V, which was further reduced to 0.195 V after the reduction treatment. Moreover, the turnover frequency at the overpotential of 0.3 V has reached 1 s −1 , which is much higher than those previously reported for non‐noble‐metal‐based electrocatalysts.
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