电催化剂
双功能
氧气
化学
析氧
锰
电化学
催化作用
氧化还原
光化学
无机化学
咔咯
氧还原
水溶液
电极
有机化学
物理化学
作者
Wolfgang Schöfberger,Felix Faschinger,S Chattopadhyay,Snehadri Bhakta,Biswajit Mondal,Johannes A. A. W. Elemans,Stefan Müllegger,Stefano Tebi,R. Koch,Florian Klappenberger,Mateusz Paszkiewicz,Johannes V. Barth,E. Rauls,Hazem Aldahhak,Wolf Gero Schmidt,Abhishek Dey
标识
DOI:10.1002/ange.201508404
摘要
Abstract Oxygen reduction and water oxidation are two key processes in fuel cell applications. The oxidation of water to dioxygen is a 4 H + /4 e − process, while oxygen can be fully reduced to water by a 4 e − /4 H + process or partially reduced by fewer electrons to reactive oxygen species such as H 2 O 2 and O 2 − . We demonstrate that a novel manganese corrole complex behaves as a bifunctional catalyst for both the electrocatalytic generation of dioxygen as well as the reduction of dioxygen in aqueous media. Furthermore, our combined kinetic, spectroscopic, and electrochemical study of manganese corroles adsorbed on different electrode materials (down to a submolecular level) reveals mechanistic details of the oxygen evolution and reduction processes.
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