About this Abstract |
| Meeting |
MS&T26: Materials Science & Technology
|
| Symposium
|
Energy Materials for Sustainable Development
|
| Presentation Title |
Impact of Mechanical Vibration on Storage Performance of High-Ni Containing Lithium-Ion Batteries |
| Author(s) |
Naresh Vangapally, Morekonda Ganesh Babu Karthick Babu, Palani Balaya |
| On-Site Speaker (Planned) |
Palani Balaya |
| Abstract Scope |
We present investigation of the effects of mechanical vibration on storage performance of NMC811 vs graphite lithium-ion batteries of cylindrical (3Ah) and pouch (4.2Ah) cell formats. The cells were subjected to controlled mechanical vibration at selected frequencies and durations. Electrochemical impedance spectroscopy provides mechanistic insight into vibration-induced degradation pathways. Significant impedance growth was observed upon vibration, indicating deterioration of electrode interfaces, changes in lithium diffusion, and charge transfer processes. Post-vibration characterization by TEM confirms increase in CEI layer thickness and formation of rock-salt/spinel phases within the cathode. XPS measurements demonstrate notable changes in surface chemistry, including growth and compositional evolution of SEI and CEI layers. To mitigate these degradation effects, we explore a combined materials and electrolyte engineering strategy. These findings highlight the critical role of mechanical considerations in high-energy battery design and provide practical guidelines for developing vibration-resistant lithium-ion batteries for next-generation EV and HEV applications. |