Electrochemical properties of ZrO2-coated LiNi0.8Co0.2O2 cathode materials

Sang Myoung Lee; Si Hyoung Oh; Jae Pyoung Ahn; Won Il Cho; Ho Jang

doi:10.1016/j.jpowsour.2005.12.035

Electrochemical properties of ZrO₂-coated LiNi_0.8Co_0.2O₂ cathode materials

Sang Myoung Lee, Si Hyoung Oh, Jae Pyoung Ahn, Won Il Cho, Ho Jang

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

60 Citations (Scopus)

Abstract

The effect of a ZrO₂ coating on the structure and electrochemical properties of the cathode material LiNi_0.8Co_0.2O₂ was investigated using EPMA, TEM, XRD, and electrochemical impedance spectroscopy (EIS). In particular, we focused on the distribution of the ZrO₂ on the particle surface to study the relationship between electrochemical properties of the coated cathode and the distribution of the coating materials in the particle. Based on the results from composition analysis and electrochemical tests, it was found that the coating layer consisted of nano-sized ZrO₂ particles attached nonuniformly to the particle surface and the ZrO₂ layer significantly improved the electrochemical properties of the cathode by suppressing the impedance growth at the interface between the electrodes and the electrolyte.

Original language	English
Pages (from-to)	1334-1339
Number of pages	6
Journal	Journal of Power Sources
Volume	159
Issue number	2
DOIs	https://doi.org/10.1016/j.jpowsour.2005.12.035
Publication status	Published - 2006 Sept 22

Bibliographical note

Funding Information:
This work was supported by the Core Technology Development Program of the Ministry of Commerce, Industry and Energy (MOCIE), Korea.

Keywords

Coating
LiNiCoO
Lithium ion batteries
Zirconium oxide

ASJC Scopus subject areas

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

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1016/j.jpowsour.2005.12.035

Cite this

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title = "Electrochemical properties of ZrO2-coated LiNi0.8Co0.2O2 cathode materials",

abstract = "The effect of a ZrO2 coating on the structure and electrochemical properties of the cathode material LiNi0.8Co0.2O2 was investigated using EPMA, TEM, XRD, and electrochemical impedance spectroscopy (EIS). In particular, we focused on the distribution of the ZrO2 on the particle surface to study the relationship between electrochemical properties of the coated cathode and the distribution of the coating materials in the particle. Based on the results from composition analysis and electrochemical tests, it was found that the coating layer consisted of nano-sized ZrO2 particles attached nonuniformly to the particle surface and the ZrO2 layer significantly improved the electrochemical properties of the cathode by suppressing the impedance growth at the interface between the electrodes and the electrolyte.",

keywords = "Coating, LiNiCoO, Lithium ion batteries, Zirconium oxide",

author = "Lee, {Sang Myoung} and Oh, {Si Hyoung} and Ahn, {Jae Pyoung} and Cho, {Won Il} and Ho Jang",

note = "Funding Information: This work was supported by the Core Technology Development Program of the Ministry of Commerce, Industry and Energy (MOCIE), Korea.",

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AU - Lee, Sang Myoung

AU - Oh, Si Hyoung

AU - Ahn, Jae Pyoung

AU - Cho, Won Il

AU - Jang, Ho

N1 - Funding Information: This work was supported by the Core Technology Development Program of the Ministry of Commerce, Industry and Energy (MOCIE), Korea.

PY - 2006/9/22

Y1 - 2006/9/22

N2 - The effect of a ZrO2 coating on the structure and electrochemical properties of the cathode material LiNi0.8Co0.2O2 was investigated using EPMA, TEM, XRD, and electrochemical impedance spectroscopy (EIS). In particular, we focused on the distribution of the ZrO2 on the particle surface to study the relationship between electrochemical properties of the coated cathode and the distribution of the coating materials in the particle. Based on the results from composition analysis and electrochemical tests, it was found that the coating layer consisted of nano-sized ZrO2 particles attached nonuniformly to the particle surface and the ZrO2 layer significantly improved the electrochemical properties of the cathode by suppressing the impedance growth at the interface between the electrodes and the electrolyte.

AB - The effect of a ZrO2 coating on the structure and electrochemical properties of the cathode material LiNi0.8Co0.2O2 was investigated using EPMA, TEM, XRD, and electrochemical impedance spectroscopy (EIS). In particular, we focused on the distribution of the ZrO2 on the particle surface to study the relationship between electrochemical properties of the coated cathode and the distribution of the coating materials in the particle. Based on the results from composition analysis and electrochemical tests, it was found that the coating layer consisted of nano-sized ZrO2 particles attached nonuniformly to the particle surface and the ZrO2 layer significantly improved the electrochemical properties of the cathode by suppressing the impedance growth at the interface between the electrodes and the electrolyte.

KW - Coating

KW - LiNiCoO

KW - Lithium ion batteries

KW - Zirconium oxide

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