Maisha Niha
Pronouns:
Research Mentor(s): Andrew Weng
Research Mentor School/College/Department: Mechanical Engineering / Engineering
Program: UROP
Session: Session 1 (9:00am – 9:50am)
Authors: Maisha Niha, Andrew Weng
Abstract
The topic of my research project is studying the impact of formation protocols on Lithium ion battery lifetime. Evaluating battery lifespan during the manufacturing process is crucial for both battery manufacturers and consumers of Electric Vehicles to make informed decisions about battery life time. To determine the correlation between the formation protocols and lifetime, we analyzed data collected from prototype battery cell pouches in the lab and being stored in Voltaiq. Which is a Battery Intelligence software that collects real-time date of battery function. I am specifically looking at the data derived from “room temperature†and “55°C†device tests and the formation pressures 0 psi and 5 psi. We looked at both beginning of life metrics and end of life metrics and the Coulombic efficiency to examine the correlation between early signals and final outcomes through cycle life characterization. We found that high formation pressure can lead to better performance and longer lifetime of a lithium-ion battery. Moderate formation temperatures between 20-40°C are found to be best for the performance and lifetime of the batteries as suggested by the higher coulombic efficeincy. This means that less capacity is being lost by the battery during each charge/discharge cycle, hence it has a longer lifespan.
