催化作用
电催化剂
电化学
吸附
碳纤维
电解质
炭黑
化学工程
热解
分子
金属
化学
聚合物
基质(水族馆)
材料科学
无机化学
电极
有机化学
物理化学
地质学
工程类
海洋学
复合数
复合材料
天然橡胶
作者
Hiroshi Yabu,Kôki Nakamura,Yasutaka Matsuo,Yutaro Umejima,Haruyuki Matsuyama,Jun Nakamura,Keisuke Ito
出处
期刊:ACS applied energy materials
[American Chemical Society]
日期:2021-12-15
卷期号:4 (12): 14380-14389
被引量:5
标识
DOI:10.1021/acsaem.1c03054
摘要
The oxygen reduction reaction (ORR) at the cathode is one of the critical bottlenecks in the energy conversion process in polymer electrolyte fuel cells (PEFCs) and metal–air batteries. An iron azaphthalocyanine unimolecular layer (Fe-AZUL) adsorbed onto a carbon substrate exhibited high ORR activity as an alternative of Pt supported on carbon black (Pt/C) electrocatalyst. We herein report the synthesis of various AzPc molecules with different peripheral structures and complex metals, as well as measurements of the ORR activities of catalysts containing the synthesized molecules and carbons. The catalytic activities were characterized by electrochemical analysis, density functional theory (DFT) calculations, and measurements of ionization potential (IP) values. From the results, the IP values on Ketjen Black (KB) were found to be one of the significant indicators for high ORR activities, providing a guideline for the development of high-performance electrocatalysts.
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