Effect of Al2O3 coating on electrochemical performance of LiCoO2 as cathode materials for secondary lithium batteries

Seungsuk Oh; Joong Kee Lee; Dongim Byun; Won Ii Cho; Byung Won Cho

doi:10.1016/j.jpowsour.2004.01.049

Effect of Al₂O₃ coating on electrochemical performance of LiCoO₂ as cathode materials for secondary lithium batteries

Seungsuk Oh, Joong Kee Lee, Dongim Byun, Won Ii Cho, Byung Won Cho

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

147 Citations (Scopus)

Abstract

Al₂O₃-coated LiCoO₂ particles are prepared by a gas-suspension spray method with coatings in the range from 0.1 to 2.0wt.%, and are examined for their electrochemical performance with special attention to the surface coverage of cathode materials for lithium-ion batteries. The Al₂O₃ coating increases both the surface area and the electrical conductivity of LiCoO₂, improves the cycle performance even at a higher cut-off charge voltage, and induces higher thermal stability. In the experimental range studied, different coating amounts (i.e., surface coverage of Al₂O₃) causes different capacity retention after 50 cycles. The optimum Al₂O₃ coating amount for the highest capacity retention is 0.2wt.%. This corresponds to 13.7% of surface coverage.

Original language	English
Pages (from-to)	249-255
Number of pages	7
Journal	Journal of Power Sources
Volume	132
Issue number	1-2
DOIs	https://doi.org/10.1016/j.jpowsour.2004.01.049
Publication status	Published - 2004 May 20

Keywords

AlO
Capacity retention
Gas-suspension spray coating
LiCoO
Lithium-ion batteries
Surface coverage

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.2004.01.049

Cite this

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title = "Effect of Al2O3 coating on electrochemical performance of LiCoO2 as cathode materials for secondary lithium batteries",

abstract = "Al2O3-coated LiCoO2 particles are prepared by a gas-suspension spray method with coatings in the range from 0.1 to 2.0wt.%, and are examined for their electrochemical performance with special attention to the surface coverage of cathode materials for lithium-ion batteries. The Al2O3 coating increases both the surface area and the electrical conductivity of LiCoO2, improves the cycle performance even at a higher cut-off charge voltage, and induces higher thermal stability. In the experimental range studied, different coating amounts (i.e., surface coverage of Al2O3) causes different capacity retention after 50 cycles. The optimum Al2O3 coating amount for the highest capacity retention is 0.2wt.%. This corresponds to 13.7% of surface coverage.",

keywords = "AlO, Capacity retention, Gas-suspension spray coating, LiCoO, Lithium-ion batteries, Surface coverage",

author = "Seungsuk Oh and Lee, {Joong Kee} and Dongim Byun and Cho, {Won Ii} and Cho, {Byung Won}",

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AU - Oh, Seungsuk

AU - Lee, Joong Kee

AU - Byun, Dongim

AU - Cho, Won Ii

AU - Cho, Byung Won

PY - 2004/5/20

Y1 - 2004/5/20

N2 - Al2O3-coated LiCoO2 particles are prepared by a gas-suspension spray method with coatings in the range from 0.1 to 2.0wt.%, and are examined for their electrochemical performance with special attention to the surface coverage of cathode materials for lithium-ion batteries. The Al2O3 coating increases both the surface area and the electrical conductivity of LiCoO2, improves the cycle performance even at a higher cut-off charge voltage, and induces higher thermal stability. In the experimental range studied, different coating amounts (i.e., surface coverage of Al2O3) causes different capacity retention after 50 cycles. The optimum Al2O3 coating amount for the highest capacity retention is 0.2wt.%. This corresponds to 13.7% of surface coverage.

AB - Al2O3-coated LiCoO2 particles are prepared by a gas-suspension spray method with coatings in the range from 0.1 to 2.0wt.%, and are examined for their electrochemical performance with special attention to the surface coverage of cathode materials for lithium-ion batteries. The Al2O3 coating increases both the surface area and the electrical conductivity of LiCoO2, improves the cycle performance even at a higher cut-off charge voltage, and induces higher thermal stability. In the experimental range studied, different coating amounts (i.e., surface coverage of Al2O3) causes different capacity retention after 50 cycles. The optimum Al2O3 coating amount for the highest capacity retention is 0.2wt.%. This corresponds to 13.7% of surface coverage.

KW - AlO

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KW - LiCoO

KW - Lithium-ion batteries

KW - Surface coverage

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