|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Materials for Energy Conversion and Storage
||Electrode-crosstalk in High Energy Lithium Ion Batteries
||Kaushik Kalaga, Daniel P. Abraham
|On-Site Speaker (Planned)
Operation of Li-ion battery cells beyond 4.0 V is limited by several redox processes involving decomposition of core electrolyte components on the surface of electrodes. The reaction products manifest as electrode-electrolyte interfacial layers contributing to capacity fade and impedance resulting in cell performance loss and reduced cycle life. Recent investigations designed to reveal mechanisms of interfacial film formation predict crosstalk involving mass transport between the electrodes through shuttles of different species. This presentation will highlight our understanding of these crosstalk mechanisms in lithium-ion cells containing layered oxide cathodes and graphite anodes. The effect of cell cutoff voltage, test temperature and electrolyte composition on electrode crosstalk will be discussed.