Issue 35, 2014
From the journal:

Journal of Materials Chemistry A

Effective passivation of a high-voltage positive electrode by 5-hydroxy-1H-indazole additives†

Yoon-Sok Kang,a   Taeho Yoon,c   Junyoung Mun,ad   Min Sik Park,a   In-Yong Song,b   Anass Benayadb  and  Seung M. Oh*c  

* Corresponding authors

a Energy Material Lab, SAIT, Samsung Electronics Co. Ltd., Gyeonggi-do 443-803, Korea

b Analytical Engineering Group, SAIT, Samsung Electronics Co. Ltd., Gyeonggi-do 443-803, Korea

c Department of Chemical and Biological Engineering, Institute for Chemical Processes, Seoul National University, Seoul 151-744, Korea
E-mail: seungoh@snu.ac.kr
Fax: +82 2 872 5755
Tel: +82 2 880 7074

d Department of Energy and Chemical Engineering, Incheon National University, 12-1, Songdo-dong, Yeonsu-gu, Incheon 406-840, Korea

Abstract

5-Hydroxy-1H-indazole (HI) is investigated as an effective film-forming additive for an over-lithiated layered oxide (OLO) positive electrode. The protective film that is generated by oxidative decomposition of the additive (HI) prior to the carbonate electrolyte is thin and less resistive. As a result, a full cell comprised of OLO/graphite in the HI-added electrolyte gives a better cycling performance.

Graphical abstract: Effective passivation of a high-voltage positive electrode by 5-hydroxy-1H-indazole additives

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Article information

DOI
https://doi.org/10.1039/C4TA01891E
Article type
Paper
Submitted
16 Apr 2014
Accepted
22 Jun 2014
First published
25 Jun 2014

J. Mater. Chem. A, 2014,2, 14628-14633

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Effective passivation of a high-voltage positive electrode by 5-hydroxy-1H-indazole additives

Y. Kang, T. Yoon, J. Mun, M. S. Park, I. Song, A. Benayad and S. M. Oh, J. Mater. Chem. A, 2014, 2, 14628 DOI: 10.1039/C4TA01891E

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