The Effects of Surface Modifications on the Electrochemical Properties of LiMn2−xNixO4 (0 ≤ x ≤ 0.5) as Cathode Materials for Secondary Lithium Batteries

Neung Kwon; Yeon Uk Jeong; Sang Il Choi; Sung Yeol Kim; Yong Joong Lee

doi:10.1002/bkcs.11531

The Effects of Surface Modifications on the Electrochemical Properties of LiMn_2−xNi_xO₄ (0 ≤ x ≤ 0.5) as Cathode Materials for Secondary Lithium Batteries

Neung Kwon, Yeon Uk Jeong, Sang Il Choi, Sung Yeol Kim, Yong Joong Lee

Kyungpook National University

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

2 Scopus citations

Abstract

In an attempt to achieve a higher energy density of secondary lithium batteries, cathode materials with higher potentials are investigated. LiMn_2−xNi_xO₄ samples are synthesized by a solid-state reaction in a controlled atmosphere. While the energy density and cycle life have improved with higher Ni contents in the phase, the electrical conductivity has decreased. In order to improve the rate capability of cells, surface modifications of the cathode material are carried out by a wet chemical method. Surface modified samples show improved rate capability and cyclability compared to the unmodified samples.

Original language	English
Pages (from-to)	946-950
Number of pages	5
Journal	Bulletin of the Korean Chemical Society
Volume	39
Issue number	8
DOIs	https://doi.org/10.1002/bkcs.11531
State	Published - Aug 2018

Keywords

Cathode materials
Secondary lithium batteries
Surface modifications

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10.1002/bkcs.11531

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title = "The Effects of Surface Modifications on the Electrochemical Properties of LiMn2−xNixO4 (0 ≤ x ≤ 0.5) as Cathode Materials for Secondary Lithium Batteries",

abstract = "In an attempt to achieve a higher energy density of secondary lithium batteries, cathode materials with higher potentials are investigated. LiMn2−xNixO4 samples are synthesized by a solid-state reaction in a controlled atmosphere. While the energy density and cycle life have improved with higher Ni contents in the phase, the electrical conductivity has decreased. In order to improve the rate capability of cells, surface modifications of the cathode material are carried out by a wet chemical method. Surface modified samples show improved rate capability and cyclability compared to the unmodified samples.",

keywords = "Cathode materials, Secondary lithium batteries, Surface modifications",

author = "Neung Kwon and Jeong, {Yeon Uk} and Choi, {Sang Il} and Kim, {Sung Yeol} and Lee, {Yong Joong}",

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AU - Jeong, Yeon Uk

AU - Choi, Sang Il

AU - Kim, Sung Yeol

AU - Lee, Yong Joong

PY - 2018/8

Y1 - 2018/8

N2 - In an attempt to achieve a higher energy density of secondary lithium batteries, cathode materials with higher potentials are investigated. LiMn2−xNixO4 samples are synthesized by a solid-state reaction in a controlled atmosphere. While the energy density and cycle life have improved with higher Ni contents in the phase, the electrical conductivity has decreased. In order to improve the rate capability of cells, surface modifications of the cathode material are carried out by a wet chemical method. Surface modified samples show improved rate capability and cyclability compared to the unmodified samples.

AB - In an attempt to achieve a higher energy density of secondary lithium batteries, cathode materials with higher potentials are investigated. LiMn2−xNixO4 samples are synthesized by a solid-state reaction in a controlled atmosphere. While the energy density and cycle life have improved with higher Ni contents in the phase, the electrical conductivity has decreased. In order to improve the rate capability of cells, surface modifications of the cathode material are carried out by a wet chemical method. Surface modified samples show improved rate capability and cyclability compared to the unmodified samples.

KW - Cathode materials

KW - Secondary lithium batteries

KW - Surface modifications

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JO - Bulletin of the Korean Chemical Society

JF - Bulletin of the Korean Chemical Society

IS - 8

ER -

The Effects of Surface Modifications on the Electrochemical Properties of LiMn_2−xNi_xO₄ (0 ≤ x ≤ 0.5) as Cathode Materials for Secondary Lithium Batteries

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