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2021 | OriginalPaper | Buchkapitel

3. Investigation on the Kinetic Property of Redox Mediators

verfasst von : Youngmin Ko

Erschienen in: Development of Redox Mediators for High-Energy-Density and High-Efficiency Lithium-Oxygen Batteries

Verlag: Springer Singapore

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Abstract

In this part, a comparative kinetic study for several RMs for OER by investigating the RM-assisted charging focusing on the chemical decomposition rate of discharge product and the RM diffusivity in the controlled lithium–oxygen cells. It was revealed that the overall RM kinetics have a positive correlation with the RM redox potential, and, the RM with multi-redox capability can display kinetic properties depending on its oxidation states. Among the investigated RMs, DMPZ²⁺ (5,10-dihydro-5,10-dimethylphenazine) exhibits the highest lithium peroxide decomposition rate, while TEMPO⁺ (2,2,6,6-tetramethyl-1-piperidinyloxy) shows the highest mass diffusion rate. Furthermore, the selection of electrolytes is observed to greatly influence the rate capability of the RM-assisted charge, and thereby be carefully considered.

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Vorheriges Kapitel Exploring a New Redox Mediator Inspired by Biological System

Nächstes Kapitel Addressing Shuttle Phenomena: Anchored Redox Mediator for Sustainable Redox Mediation

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Titel: Investigation on the Kinetic Property of Redox Mediators
verfasst von: Youngmin Ko
Verlag: Springer Singapore
Buch: Development of Redox Mediators for High-Energy-Density and High-Efficiency Lithium-Oxygen Batteries
Print ISBN: 978-981-16-2531-2

Electronic ISBN: 978-981-16-2532-9

Copyright-Jahr: 2021
DOI: https://doi.org/10.1007/978-981-16-2532-9_3