Double layer of Platinum Electrodes: Non-Monotonic Surface Charging Phenomena and Negative Double Layer Capacitance

Peer reviewed: 
Yes, item is peer reviewed.
Scholarly level: 
Faculty/Staff
Final version published as: 

Jun Huang, Tao Zhou, Jianbo Zhang, and Michael Eikerling,Double layer of platinum electrodes: Non-monotonic surface charging phenomena and negative double layer capacitance, Journal of Chemical Physics. 148, 044704 (2018). https://doi.org/10.1063/1.5010999

Date created: 
2018-01
Identifier: 
DOI: 10.1063/1.5010999
Keywords: 
Platinum electrocatalysis
Surface charging effects
Double layer capacitance
Surface oxide dipole
Abstract: 

In this study, the refined double layer model of platinum electrodes accounts for chemisorbed oxygen species, oriented interfacial water molecules and ion size effects in solution. It results in a non-monotonic surface charging relation and a peculiar capacitance vs. potential curve with a maximum and maybe negative-defined values in the potential regime of oxide-formation.

 

Language: 
English
Document type: 
Article
Rights: 
Rights remain with the authors.
File(s): 
Sponsor(s): 
Hunan Provincial Science and Technology Plan Project
National Natural Science Foundation of China
Automotive Partnership Canada
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