Improvement of capacity fading resistance of LiMn2O4 by amphoteric oxides

Sung Bin Park; Ho Chul Shin; Wan Gyu Lee; Won Il Cho; Ho Jang

doi:10.1016/j.jpowsour.2008.01.051

Improvement of capacity fading resistance of LiMn₂O₄ by amphoteric oxides

Sung Bin Park, Ho Chul Shin, Wan Gyu Lee, Won Il Cho, Ho Jang

Department of Materials Science and Engineering

Research output: Contribution to journal › Article › peer-review

68 Citations (Scopus)

Abstract

The capacity fading of LiMn₂O₄ is improved by adding amphoteric oxides such as Al₂O₃, ZnO, SnO₂, and ZrO₂ to the cathode slurry. The effectiveness of the amphoteric oxides on the fade resistance of LiMn₂O₄ is compared by measuring the capability of scavenging hydrofluoric acid (HF) in the electrolyte by the oxides using a pH meter and by BET surface analysis. Results suggest that the capacity fading is determined by the reactivity of oxides with HF and the effective surface-area of the oxide particles when they were mixed in the slurry. Zinc oxide is the most effective of the oxides in scavenging HF.

Original language	English
Pages (from-to)	597-601
Number of pages	5
Journal	Journal of Power Sources
Volume	180
Issue number	1
DOIs	https://doi.org/10.1016/j.jpowsour.2008.01.051
Publication status	Published - 2008 May 15

Keywords

Amphoteric oxide
Capacity fading hydrofluoric acid scavenging
Coating
LiMnO
Lithium-ion battery

ASJC Scopus subject areas

Renewable Energy, Sustainability and the Environment
Energy Engineering and Power Technology
Physical and Theoretical Chemistry
Electrical and Electronic Engineering

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title = "Improvement of capacity fading resistance of LiMn2O4 by amphoteric oxides",

abstract = "The capacity fading of LiMn2O4 is improved by adding amphoteric oxides such as Al2O3, ZnO, SnO2, and ZrO2 to the cathode slurry. The effectiveness of the amphoteric oxides on the fade resistance of LiMn2O4 is compared by measuring the capability of scavenging hydrofluoric acid (HF) in the electrolyte by the oxides using a pH meter and by BET surface analysis. Results suggest that the capacity fading is determined by the reactivity of oxides with HF and the effective surface-area of the oxide particles when they were mixed in the slurry. Zinc oxide is the most effective of the oxides in scavenging HF.",

keywords = "Amphoteric oxide, Capacity fading hydrofluoric acid scavenging, Coating, LiMnO, Lithium-ion battery",

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AU - Park, Sung Bin

AU - Shin, Ho Chul

AU - Lee, Wan Gyu

AU - Cho, Won Il

AU - Jang, Ho

PY - 2008/5/15

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N2 - The capacity fading of LiMn2O4 is improved by adding amphoteric oxides such as Al2O3, ZnO, SnO2, and ZrO2 to the cathode slurry. The effectiveness of the amphoteric oxides on the fade resistance of LiMn2O4 is compared by measuring the capability of scavenging hydrofluoric acid (HF) in the electrolyte by the oxides using a pH meter and by BET surface analysis. Results suggest that the capacity fading is determined by the reactivity of oxides with HF and the effective surface-area of the oxide particles when they were mixed in the slurry. Zinc oxide is the most effective of the oxides in scavenging HF.

AB - The capacity fading of LiMn2O4 is improved by adding amphoteric oxides such as Al2O3, ZnO, SnO2, and ZrO2 to the cathode slurry. The effectiveness of the amphoteric oxides on the fade resistance of LiMn2O4 is compared by measuring the capability of scavenging hydrofluoric acid (HF) in the electrolyte by the oxides using a pH meter and by BET surface analysis. Results suggest that the capacity fading is determined by the reactivity of oxides with HF and the effective surface-area of the oxide particles when they were mixed in the slurry. Zinc oxide is the most effective of the oxides in scavenging HF.

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