Influence of Li Ions on the Oxygen Reduction Reaction of Platinum Electrocatalyst
Abstract
A Li-air battery can provide a much higher theoretical energy density than a Li-ion battery. the use of aqueous acidic electrolytes may prevent lithium oxide deposition from aprotic electrolytes and lithium carbonate precipitation from alkaline electrolytes. the present communication reports a study on the effect of Li ions on the oxygen reduction reaction (ORR) in sulfuric acid electrolytes. It was found that the Li ions have negligible interactions with the active surface of Pt catalysts. However, significantly lower ORR activities were found when Li ions are present in the sulfuric acid. the intrinsic kinetic activities were found to decrease with the increase of Li ion concentrations, but level off when the Li ion concentrations are larger than 1.0 M. the low activities of Pt catalysts in Li ion containing electrolytes were attributed to a constraining effect of Li ions on the diffusion of oxygen in the electrolyte solution. © 2011 Elsevier B.V. All Rights Reserved.
Recommended Citation
H. Liu and Y. Xing, "Influence of Li Ions on the Oxygen Reduction Reaction of Platinum Electrocatalyst," Electrochemistry Communications, vol. 13, no. 6, pp. 646 - 649, Elsevier; International Society of Electrochemistry (ISE), Jun 2011.
The definitive version is available at https://doi.org/10.1016/j.elecom.2011.03.036
Department(s)
Chemical and Biochemical Engineering
Keywords and Phrases
Li-air battery; Lithium cation; Oxygen reduction reaction; Platinum electrocatalyst
International Standard Serial Number (ISSN)
1388-2481
Document Type
Article - Journal
Document Version
Final Version
File Type
text
Language(s)
English
Rights
© 2024 Elsevier; International Society of Electrochemistry (ISE), All rights reserved.
Creative Commons Licensing
This work is licensed under a Creative Commons Attribution 4.0 License.
Publication Date
01 Jun 2011
