塔菲尔方程
过电位
析氧
电化学
异质结
原位
材料科学
化学工程
相(物质)
分解水
催化作用
纳米技术
化学
电极
光电子学
物理化学
有机化学
光催化
工程类
作者
Jingwei Huang,Kai Li,Lei Wang,Houde She,Qizhao Wang
标识
DOI:10.1016/j.cclet.2021.11.028
摘要
The construction of rich phase interfaces to increase active reaction area in hybrid materials is an excellent strategy to improve electrochemical performance. Under this guideline, [email protected] organic framework (MOF) is constructed by the "MOF on MOF" method, then converts to [email protected] double hydroxides (LDH) by in situ transformation in alkaline solution. [email protected] shows excellent electrochemical water oxidation performance. It needs only an overpotential of 215 mV to drive 10 mA/cm2 of oxygen evolution reaction (OER), which is less than that of NiFe-LDH, MIL-101. In addition, [email protected] has the smallest Tafel slope (55.1 mV/dec) compared with NiFe-LDH (61.1 mV/dec), MIL-101 (150.8 mV/dec). The excellent water oxidation activity is due to the high phase interfaces derived from high specific surface area of MOF. This work offers an alternative method for making MOF/LDH heterostructures with an optimized phase interfaces and provides new insights for OER.
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