期刊
CURRENT OPINION IN ELECTROCHEMISTRY
卷 33, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.coelec.2022.100938
关键词
Electric double layer; Surface charge; Partial charge transfer; Chemisorption-induced surface dipole; Negative capacitance
资金
- Europe Research Stay in Alicante University from the Alexander von Humboldt Foundation
This article introduces the surface charging behaviors of electrochemical interfaces and electrocatalytic interfaces, and explains the origin of nonmonotonic surface charging behaviors of electrocatalytic interfaces.
The surface charge is a key concept in electrochemistry. Mathematically, the surface charge is obtained from a spatial integration of the volume charge along a particular direction. Ambiguities thus arise in choosing the starting and ending points of the integration. As for electrocatalytic interfaces, the presence of chemisorbates further complicates the situation. In this minireview, I adopt a definition of the surface charge within a continuum picture of the electric double layer. I will introduce surface charging behaviors of firstly ordinary electrochemical interfaces and then electrocatalytic interfaces featuring partially charged chemisorbates. Particularly, the origin of nonmonotonic surface charging behaviors of electrocatalytic interfaces is explained using a primitive model. Finally, a brief account of previous studies on the nonmonotonic surface charging behavior is presented, as a subline of the spectacular history of electric double layer.
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