Issue 39, 2018

Facile synthesis of partially oxidized Mn3O4-functionalized carbon cathodes for rechargeable Li–O2 batteries

Abstract

High charging overpotential (low energy efficiency) is one of the most important challenges preventing the use of current nonaqueous Li–O2 batteries. This study demonstrates direct in situ-incorporation of metal oxides on carbon during synthesis and the associated application to nonaqueous Li–O2 battery catalysts. The partially oxidized Mn3O4 (Mn3O4/Mn5O8)-incorporating carbon cathode shows an average overpotential reduction of ∼8% charge/discharge during 40 cycles in a rechargeable nonaqueous Li–O2 cell. Here, we suggested the possibility that only a small amount of the oxide species (<5%) could show catalytic effects during charge in a rechargeable Li–O2 cell.

Graphical abstract: Facile synthesis of partially oxidized Mn3O4-functionalized carbon cathodes for rechargeable Li–O2 batteries

Supplementary files

Article information

Article type
Paper
Submitted
05 Apr 2018
Accepted
07 Jun 2018
First published
19 Jun 2018
This article is Open Access
Creative Commons BY-NC license

RSC Adv., 2018,8, 22226-22232

Facile synthesis of partially oxidized Mn3O4-functionalized carbon cathodes for rechargeable Li–O2 batteries

J. Kim, I. Kang, S. Kim and J. Kang, RSC Adv., 2018, 8, 22226 DOI: 10.1039/C8RA02920B

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