Exploring the role of chemistry, state of charge, and cycle-history on battery safety

Lithium-ion batteries continue to revolutionize the modern landscape; with ubiquitous applications in aerospace, consumer electronics, grid storage, and
powertrains for electric vehicles. However, catastrophic failures of Li-ion batteries have caused major setbacks in the uptake of high-energy density cells for such
advanced applications. The objective of this work is to investigate the correlation of Li-ion safe storage conditions affected by state of charge (SOC), age, and
electrolyte type. We will apply in-situ calorimetry to explore the structural dynamics of thermal runaway where simultaneous heat measurements will facilitate
linking internal events with external thermal responses. Specifically, we will explore the influence of cycle history of cells, their state of charge, and their chemistry on the risks posed during thermal runaway. Our proven high-throughput in-situ calorimeter will facilitate a large test matrix, as described herein.