Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
}
TY - JOUR
T1 - Impact of active material surface area on thermal stability of LiCoO2 cathode
AU - Geder, Jan
AU - Hoster, Harry E.
AU - Jossen, Andreas
AU - Garche, Juergen
AU - Yu, Denis Y. W.
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 - Lithium-ion battery
KW - Cathode
KW - LiCoO2
KW - Thermal stability
KW - Thermal analysis
KW - LITHIUM BATTERIES
KW - SIZE
U2 - 10.1016/j.jpowsour.2014.01.116
DO - 10.1016/j.jpowsour.2014.01.116
M3 - Journal article
VL - 257
SP - 286
EP - 292
JO - Journal of Power Sources
JF - Journal of Power Sources
SN - 0378-7753
ER -