Impact of active material surface area on thermal stability of LiCoO 2 cathode

Jan Geder; Harry E. Hoster; Andreas Jossen; Jürgen Garche; Denis Y.W. Yu

doi:10.1016/j.jpowsour.2014.01.116

Impact of active material surface area on thermal stability of LiCoO ₂ cathode

Jan Geder
, Harry E. Hoster
, Andreas Jossen
, Jürgen Garche
, Denis Y.W. Yu

Chair of Electrical Energy Storage Technology

TUM CREATE
Fuel Cell and Battery Consulting - FCBAT Ulm
City University of Hong Kong

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

76 Scopus citations

Abstract

Thermal stability of charged LiCoO₂ cathodes with various surface areas of active material is investigated in order to quantify the effect of LiCoO₂ surface area on thermal stability of cathode. Thermogravimetric analyses and calorimetry have been conducted on charged cathodes with different active material surface areas. Besides reduced thermal stability, high surface area also changes the active material decomposition reaction and induces side reactions with additives. Thermal analyses of LiCoO₂ delithiated chemically without any additives or with a single additive have been conducted to elaborate the effect of particle size on side reactions. Stability of cathode-electrolyte system has been investigated by accelerating rate calorimetry (ARC). Arrhenius activation energy of cathode decomposition has been calculated as function of conversion at different surface area of active material.

Original language	English
Pages (from-to)	286-292
Number of pages	7
Journal	Journal of Power Sources
Volume	257
DOIs	https://doi.org/10.1016/j.jpowsour.2014.01.116
State	Published - 1 Jul 2014

UN SDGs

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

SDG 7 Affordable and Clean Energy

Keywords

Cathode
LiCoO
Lithium-ion battery
Thermal analysis
Thermal stability

Access to Document

10.1016/j.jpowsour.2014.01.116

Cite this

@article{575620184cdc4797bb6aa966a7a76ea7,

title = "Impact of active material surface area on thermal stability of LiCoO 2 cathode",

abstract = "Thermal stability of charged LiCoO2 cathodes with various surface areas of active material is investigated in order to quantify the effect of LiCoO2 surface area on thermal stability of cathode. Thermogravimetric analyses and calorimetry have been conducted on charged cathodes with different active material surface areas. Besides reduced thermal stability, high surface area also changes the active material decomposition reaction and induces side reactions with additives. Thermal analyses of LiCoO2 delithiated chemically without any additives or with a single additive have been conducted to elaborate the effect of particle size on side reactions. Stability of cathode-electrolyte system has been investigated by accelerating rate calorimetry (ARC). Arrhenius activation energy of cathode decomposition has been calculated as function of conversion at different surface area of active material.",

keywords = "Cathode, LiCoO, Lithium-ion battery, Thermal analysis, Thermal stability",

author = "Jan Geder and Hoster, \{Harry E.\} and Andreas Jossen and J{\"u}rgen Garche and Yu, \{Denis Y.W.\}",

note = "Funding Information: This work was financially supported by the Singapore National Research Foundation under its Campus for Research Excellence and Technological Enterprise (CREATE) programme. ",

year = "2014",

month = jul,

day = "1",

doi = "10.1016/j.jpowsour.2014.01.116",

language = "English",

volume = "257",

pages = "286--292",

journal = "Journal of Power Sources",

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publisher = "Elsevier B.V.",

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TY - JOUR

T1 - Impact of active material surface area on thermal stability of LiCoO 2 cathode

AU - Geder, Jan

AU - Hoster, Harry E.

AU - Jossen, Andreas

AU - Garche, Jürgen

AU - Yu, Denis Y.W.

N1 - Funding Information: This work was financially supported by the Singapore National Research Foundation under its Campus for Research Excellence and Technological Enterprise (CREATE) programme.

PY - 2014/7/1

Y1 - 2014/7/1

N2 - Thermal stability of charged LiCoO2 cathodes with various surface areas of active material is investigated in order to quantify the effect of LiCoO2 surface area on thermal stability of cathode. Thermogravimetric analyses and calorimetry have been conducted on charged cathodes with different active material surface areas. Besides reduced thermal stability, high surface area also changes the active material decomposition reaction and induces side reactions with additives. Thermal analyses of LiCoO2 delithiated chemically without any additives or with a single additive have been conducted to elaborate the effect of particle size on side reactions. Stability of cathode-electrolyte system has been investigated by accelerating rate calorimetry (ARC). Arrhenius activation energy of cathode decomposition has been calculated as function of conversion at different surface area of active material.

AB - Thermal stability of charged LiCoO2 cathodes with various surface areas of active material is investigated in order to quantify the effect of LiCoO2 surface area on thermal stability of cathode. Thermogravimetric analyses and calorimetry have been conducted on charged cathodes with different active material surface areas. Besides reduced thermal stability, high surface area also changes the active material decomposition reaction and induces side reactions with additives. Thermal analyses of LiCoO2 delithiated chemically without any additives or with a single additive have been conducted to elaborate the effect of particle size on side reactions. Stability of cathode-electrolyte system has been investigated by accelerating rate calorimetry (ARC). Arrhenius activation energy of cathode decomposition has been calculated as function of conversion at different surface area of active material.

KW - Cathode

KW - LiCoO

KW - Lithium-ion battery

KW - Thermal analysis

KW - Thermal stability

UR - https://www.scopus.com/pages/publications/84896867580

U2 - 10.1016/j.jpowsour.2014.01.116

DO - 10.1016/j.jpowsour.2014.01.116

M3 - Article

AN - SCOPUS:84896867580

SN - 0378-7753

VL - 257

SP - 286

EP - 292

JO - Journal of Power Sources

JF - Journal of Power Sources

ER -