电催化剂
选择性
化学
催化作用
化学工程
氧化铁
电子转移
材料科学
石墨烯
氧化物
钴
无机化学
镍
共价键
复合数
纳米技术
光化学
电化学
有机化学
电极
复合材料
物理化学
工程类
作者
Muye Liu,Wen Yue,Luhua Lu,Qi Kang,Zhicheng Xie,Ying Chen,Xiaocong Tian,Hongyun Jin,Jinghai Liu
标识
DOI:10.1002/celc.202100627
摘要
Abstract Earth‐abundant non‐precious‐metal‐based materials are promising candidates for low‐cost oxygen reduction reaction (ORR) catalysts. Within those elements, iron is the cheapest given the abundant resources. However, there are few iron‐based ORR catalysts given the difficulty of achieving good electrocatalytic activity and stability with them in comparison to cobalt‐ and nickel‐based catalysts. Moreover, the synthesis of iron‐based ORR catalysts is energy intense and normally requires complicated processes. This work reports an iron‐based covalent organic framework (COF) synthesized through a one‐step low‐temperature solid reaction, which is cost effective and energy saving. The iron‐based COF, named IPPc, shows a high four‐electron‐transfer reaction selectivity. After compositing it with reduced graphene oxide, the resulting composite preserves the high electron‐transfer reaction selectivity and displays a largely enhanced activity and stability.
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