氧还原反应
氧还原
催化作用
电化学
过电位
析氧
还原(数学)
塔菲尔方程
纳米技术
作者
Arezoo Avid,Iryna V. Zenyuk
标识
DOI:10.1016/j.coelec.2020.09.001
摘要
Abstract Oxygen reduction reaction (ORR) is one of the most technologically relevant reactions. It occurs at the interface of the electrocatalyst and electrolyte, where oxygen reacts with protons and electrons to produce water. Because the electrocatalyst is dispersed on a high surface area support, morphological confinement becomes critical, as it dictates proton and oxygen transport. Furthermore, confinement is induced by ionomer, ionic liquids (ILs), or molecular additives, and their impact on electrocatalyst reactivity and transport properties is currently not well understood. We present an overview of electrostatics and mass transport–induced confinement and zoom in into ILs and molecular additives and try to unravel how local confinement induced by them impacts ORR.
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