普鲁士蓝
电解质
催化作用
电解
材料科学
电解水
析氧
化学工程
电催化剂
无定形固体
碱性水电解
无机化学
电极
电化学
化学
有机化学
物理化学
工程类
作者
HyukSu Han,So Jung Kim,Sun Young Jung,Dongjo Oh,Arpan Kumar Nayak,Jin Uk Jang,Junghwan Bang,Sunghwan Yeo,Tae Ho Shin
出处
期刊:Small
[Wiley]
日期:2023-08-23
卷期号:19 (49)
标识
DOI:10.1002/smll.202303912
摘要
Development of highly efficient and robust electrocatalysts for oxygen evolution reaction (OER) under specific electrolyte is a key to actualize commercial low-temperature water electrolyzers. Herein, a rational catalyst design strategy is first reported based on amorphous-crystalline (a-c) interfacial engineering to achieve high catalytic activity and durability under diverse electrolytes that can be used for all types of low-temperature water electrolysis. Abundant a-c interface (ACI) is implemented into a hollow nanocubic (pre)-electrocatalyst which is derived from Ir-doped Ni-Fe-Zn Prussian blue analogues (PBA). The implemented c-a interface is well maintained during prolonged OER in alkaline, alkalized saline, and acidic electrolytes demonstrating its diverse functionality for water electrolysis. Notably, the final catalyst exhibits superior catalytic activity with excellent durability for OER compared to that of benchmark IrO2 catalyst, regardless of chemical environment of electrolytes. Hence, this work can be an instructive guidance for developing the ACI engineered electroctalyst which can be diversely used for different types of low-temperature electrolyzers.
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