析氧
材料科学
石墨烯
催化作用
化学工程
分解水
电化学
复合数
层状双氢氧化物
电催化剂
电流密度
氧化还原
电子转移
过电位
无机化学
纳米技术
化学
电极
复合材料
冶金
光催化
光化学
量子力学
生物化学
工程类
物理化学
物理
作者
Ming Tian,Jie Yi,Haili Tong,Yingming Xu,Lixin Xia
出处
期刊:ChemNanoMat
[Wiley]
日期:2019-11-26
卷期号:6 (1): 154-159
被引量:62
标识
DOI:10.1002/cnma.201900613
摘要
Abstract Water oxidation is the rate‐determining step for water splitting. The layered double hydroxides (LDHs) play an important role in the oxygen evolution reaction (OER). Combining with some two‐dimensional (2D) materials with high surface area and electrical conductivity can greatly improve the performance of water oxidation. Herein, we report a composite material that FeCo layered double hydroxides (FeCo‐LDHs) were combined with single layer MXene (Ti 3 C 2 T x ). The single‐layer MXene takes full advantage of the more active sites, reflecting higher electrochemical activity than other forms of MXene (nanofiber and multilayer). The resulting FeCo‐LDH/MXene hybrid provides high electron transfer ability and electrochemically active surface area, leading to an enhancement of catalytic activity and durability for OER. An extremely low overpotential of 268 mV at a current density of 10 mA cm −2 was achieved, which was lower than Graphene or MWCNT combined with FeCo‐LDH.
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