The entropy changes (?S) in various cathode and anode materials, as well as 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 anode has lower entropy change compared to graphite anodes. 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.
Revised: May 7, 2010 |
Published: June 1, 2010
Citation
Viswanathan V.V., D. Choi, D. Wang, W. Xu, S.A. Towne, R.E. Williford, and J. Zhang, et al. 2010.Effect of entropy of lithium intercalation in cathodes and anodes on Li-ion battery thermal management.Journal of Power Sources 195, no. 11:3720-3729.PNNL-SA-68775.doi:10.1016/j.jpowsour.2009.11.103