TY - JOUR
T1 - Effect of entropy change of lithium intercalation in cathodes and anodes on Li-ion battery thermal management
AU - Viswanathan, Vilayanur V.
AU - Choi, Daiwon
AU - Wang, Donghai
AU - Xu, Wu
AU - Towne, Silas
AU - Williford, Ralph E.
AU - Zhang, Ji Guang
AU - Liu, Jun
AU - Yang, Zhenguo
N1 - Funding Information:
The research described in this paper was conducted under the Laboratory Directed Research and Development Program at Pacific Northwest National Laboratory, a multi-program national laboratory operated by Battelle for the U.S. Department of Energy. We are also grateful to Dr. Imre Gyuk of the DOE-OE Electricity Storage Program for funding to continue this work, and for helpful discussions with Mr. Tien Duong of the DOE. We sincerely appreciate the significant help provided on the ETMS system by Dr. Joseph C. McMenamin, currently at CFX Battery in Azusa, CA. We are grateful to Dr. Jinxiang Dai and Dr. Ganesh Skandan of NEI Corporation for providing us with LiFePO 4 and Li titanate samples.
PY - 2010/6/1
Y1 - 2010/6/1
N2 - The entropy changes (ΔS) in various cathode and anode materials, as well as in complete Li-ion batteries, were measured using an electrochemical thermodynamic measurement system (ETMS). LiCoO2 has a much larger entropy change than electrodes based on LiNixCoyMnzO2 and LiFePO4, while lithium titanate based anodes have lower entropy change compared to graphite anodes. The reversible heat generation rate was found to be a significant portion of the total heat generation rate. The appropriate combinations of cathode and anode were investigated to minimize reversible heat generation rate across the 0-100% state of charge (SOC) range. In addition to screening for battery electrode materials with low reversible heat, the techniques described in this paper can be a useful engineering tool for battery thermal management in stationary and transportation applications.
AB - The entropy changes (ΔS) in various cathode and anode materials, as well as in complete Li-ion batteries, were measured using an electrochemical thermodynamic measurement system (ETMS). LiCoO2 has a much larger entropy change than electrodes based on LiNixCoyMnzO2 and LiFePO4, while lithium titanate based anodes have lower entropy change compared to graphite anodes. The reversible heat generation rate was found to be a significant portion of the total heat generation rate. The appropriate combinations of cathode and anode were investigated to minimize reversible heat generation rate across the 0-100% state of charge (SOC) range. In addition to screening for battery electrode materials with low reversible heat, the techniques described in this paper can be a useful engineering tool for battery thermal management in stationary and transportation applications.
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U2 - 10.1016/j.jpowsour.2009.11.103
DO - 10.1016/j.jpowsour.2009.11.103
M3 - Article
AN - SCOPUS:75749152056
SN - 0378-7753
VL - 195
SP - 3720
EP - 3729
JO - Journal of Power Sources
JF - Journal of Power Sources
IS - 11
ER -
