Li Yang, Nader M. Hagh, JR Klein, Eric Macciomei, Umamaheswari Janakiraman*, Mary. E.Fortier.

General Motors, USA

Email: uma.viswanathan@gm.com

Tel:248-331-6001

Abstract.

Lithium metal battery technology is very attractive as it can potentially offer >1000 Wh/L. Yet, it is a relatively new technology. Therefore, an assessment of viability of this technology for Electric Vehicle (EV) application is required. A clear understanding of cell performance against various vehicle operational requirement is to be understood for successful deployment of this technology for practical EV application. For example, due to the high reactivity of lithium metal, continuous electrolyte consumption and lithium anode morphological changes have been reported ^[1,2], which can seriously affect the lithium metal battery cell cycle life. In contrary, stable, and long cycle life have been reported in several publications, although most of the results were obtained in coin cells. In this report we will take a closer look at the performance of lithium metal battery cell using coin/pouch cell data accompanied by characterization and modeling. Our goal is to achieve correlation of cell performance to component design and identify the areas of improvement.

Literature:

[1] Wu, B. et al. J. Mater. Chem. A 4, 15266–15280 (2016).

[2] Wang, H. et al. Nat. Commun. 8, 15106 (2017).