|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Materials for Energy Conversion and Storage
||Investigation of Dynamic Load Effect on Performance and Safety of Lithium- Ion Battery with Raman Spectroscopy
||Bing Li, Vikas Tomar
|On-Site Speaker (Planned)
Lithium- ion battery (LIB) has been well accepted in industry as one of the most mature yet promising rechargeable batteries. However there still exists safety flaws of LIB, with one main hazard being dynamic load generated defects during transportation. To understand this effect on battery system, direct and vibration cyclic impact tests were developed and accomplished on half-cell battery. Behavior of cathode (active material: LiCoO2) under direct and cyclic impact was evaluated with Raman mapping generated for impact area. Raman spectroscopy revealed micro level damage not visible under optical microscope. Raman mapping also presented relatively uniform defect within evaluated area, indicating electrode morphology feature was of limited effect on defect heterogeneity. Different Raman shift was observed with variable loading cycles, revealing time dependent nature of defect accumulation.