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

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

Research output: Contribution to journalArticle

46 Citations (Scopus)

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.

Original languageEnglish
Pages (from-to)1334-1339
Number of pages6
JournalJournal of Power Sources
Volume159
Issue number2
DOIs
Publication statusPublished - 2006 Sep 22

Fingerprint

Electrochemical properties
Cathodes
cathodes
Coatings
coatings
Electron probe microanalysis
impedance
Electrochemical impedance spectroscopy
Electrolytes
Transmission electron microscopy
Electrodes
electrolytes
Chemical analysis
transmission electron microscopy
electrodes
spectroscopy

Keywords

  • Coating
  • LiNiCoO
  • Lithium ion batteries
  • Zirconium oxide

ASJC Scopus subject areas

  • Electrochemistry
  • Fuel Technology
  • Materials Chemistry
  • Energy (miscellaneous)

Cite this

Electrochemical properties of ZrO2-coated LiNi0.8Co0.2O2 cathode materials. / Lee, Sang Myoung; Oh, Si Hyoung; Ahn, Jae Pyoung; Cho, Won Il; Jang, Ho.

In: Journal of Power Sources, Vol. 159, No. 2, 22.09.2006, p. 1334-1339.

Research output: Contribution to journalArticle

Lee, Sang Myoung ; Oh, Si Hyoung ; Ahn, Jae Pyoung ; Cho, Won Il ; Jang, Ho. / Electrochemical properties of ZrO2-coated LiNi0.8Co0.2O2 cathode materials. In: Journal of Power Sources. 2006 ; Vol. 159, No. 2. pp. 1334-1339.
@article{6cf233aefc0149dcaed9b8e8b1bbb8eb,
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",
year = "2006",
month = "9",
day = "22",
doi = "10.1016/j.jpowsour.2005.12.035",
language = "English",
volume = "159",
pages = "1334--1339",
journal = "Journal of Power Sources",
issn = "0378-7753",
publisher = "Elsevier",
number = "2",

}

TY - JOUR

T1 - Electrochemical properties of ZrO2-coated LiNi0.8Co0.2O2 cathode materials

AU - Lee, Sang Myoung

AU - Oh, Si Hyoung

AU - Ahn, Jae Pyoung

AU - Cho, Won Il

AU - Jang, Ho

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

UR - http://www.scopus.com/inward/record.url?scp=33748042969&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=33748042969&partnerID=8YFLogxK

U2 - 10.1016/j.jpowsour.2005.12.035

DO - 10.1016/j.jpowsour.2005.12.035

M3 - Article

AN - SCOPUS:33748042969

VL - 159

SP - 1334

EP - 1339

JO - Journal of Power Sources

JF - Journal of Power Sources

SN - 0378-7753

IS - 2

ER -