Dendrite‐accelerated thermal runaway mechanisms of lithium metal pouch batteries
Citations Over TimeTop 1% of 2022 papers
Abstract
Abstract High‐energy‐density lithium metal batteries (LMBs) are widely accepted as promising next‐generation energy storage systems. However, the safety features of practical LMBs are rarely explored quantitatively. Herein, the thermal runaway behaviors of a 3.26 Ah (343 Wh kg −1 ) Li | LiNi 0.5 Co 0.2 Mn 0.3 O 2 pouch cell in the whole life cycle are quantitatively investigated by extended volume‐accelerating rate calorimetry and differential scanning calorimetry. By thermal failure analyses on pristine cell with fresh Li metal, activated cell with once plated dendrites, and 20‐cycled cell with large quantities of dendrites and dead Li, dendrite‐accelerated thermal runaway mechanisms including reaction sequence and heat release contribution are reached. Suppressing dendrite growth and reducing the reactivity between Li metal anode and electrolyte at high temperature are effective strategies to enhance the safety performance of LMBs. These findings can largely enhance the understanding on the thermal runaway behaviors of Li metal pouch cells in practical working conditions.
Related Papers
- → Challenges and Opportunities to Mitigate the Catastrophic Thermal Runaway of High‐Energy Batteries(2023)222 cited
- → Recent advances in dendrite-free lithium metal anodes for high-performance batteries(2022)78 cited
- → Modified lithium metal anodeviaanion-planting protection mechanisms for dendrite-free long-life lithium metal batteries(2022)21 cited
- → Challenges and Opportunities to Mitigate the Catastrophic Thermal Runaway of High‐Energy Batteries (Adv. Energy Mater. 15/2023)(2023)7 cited
- → Numerical Study on Energy Density and Thermal Runaway According to the Size of Lithium-ion Batteries(2022)