A highly efficient Li2O2 oxidation system in Li–O2 batteries

Yoko Hase; Juntaro Seki; Tohru Shiga; Fuminori Mizuno; Hidetaka Nishikoori; Hideki Iba; Kensuke Takechi

doi:10.1039/C6CC04543J

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A highly efficient Li₂O₂ oxidation system in Li–O₂ batteries†

Yoko Hase,*^a Juntaro Seki,^a Tohru Shiga,^a Fuminori Mizuno,^bc Hidetaka Nishikoori,^b Hideki Iba^b and Kensuke Takechi^ac

Author affiliations

* Corresponding authors

^a Toyota Central R&D Labs., Inc., 41-1 Yokomichi, Nagakute, Aichi 480-1192, Japan
E-mail: y-hase@mosk.tytlabs.co.jp

^b Battery Research Department, Battery Material Engineering & Research Division, Toyota Motor Corporation, 1200 Mishuku, Susono, Shizuoka 410-1193, Japan

^c Materials Research Department, Toyota Research Institute of North America, 1555 Woodridge Ave., Ann Arbor, MI 48105, USA

Abstract

A novel indirect charging system that uses a redox mediator was demonstrated for Li–O₂ batteries. 4-Methoxy-2,2,6,6-tetramethylpiperidinyl-1-oxyl (MeO-TEMPO) was applied as a mediator to enable the oxidation of Li₂O₂, even though Li₂O₂ is electrochemically isolated. This system promotes the oxidation of Li₂O₂ without parasitic reactions attributed to electrochemical charging and reduces the charging time.

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Article information

DOI: https://doi.org/10.1039/C6CC04543J
Article type: Communication
Submitted: 31 May 2016
Accepted: 11 Aug 2016
First published: 12 Aug 2016

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Chem. Commun., 2016,52, 12151-12154

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A highly efficient Li₂O₂ oxidation system in Li–O₂ batteries

Y. Hase, J. Seki, T. Shiga, F. Mizuno, H. Nishikoori, H. Iba and K. Takechi, Chem. Commun., 2016, 52, 12151 DOI: 10.1039/C6CC04543J

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