The Thermal Stability of Lithium Solid Electrolytes with Metallic Lithium

By Rusong Chen, Adelaide M. Nolan, Jiaze Lu, Junyang Wang, Xiqian Yu, Yifei Mo, Liquan Chen, Xuejie Huang, Hong Li. Joule, 2020

300 citations recorded by the source corpus.

Summary All-solid-state lithium-metal batteries are regarded as promising next-generation battery systems. While thermal runaway in conventional Li-ion batteries is known to cause safety hazards, the thermal issues posed by highly reactive metallic lithium (Li) with non-flammable ceramic solid electrolytes (SEs) have been less studied but are critical for the safety of all-solid-state Li-metal batteries. Here, we quantify the thermal stability of four prevalent oxide SEs with metallic Li using the accelerating rate calorimeter (ARC). Thermal runaway is observed during ARC tests for four widely used SEs when contacting with Li, while no obvious heat releases from garnet with Li. The oxygen generation from SEs at elevated temperatures is found to be responsible for the thermal runaway with Li. Our results indicate potential safety issues in all solid-state batteries (ASSBs) brought by highly reactive metallic Li and oxygen from SEs at increased temperatures, emphasizing the need for investigating thermal safety issues in ASSBs.

Subfields: Automotive Engineering, Electrical and Electronic Engineering

View Paper: https://www.semanticscholar.org/paper/6f1cc88b492f26500600925cbac600cff1cd8499

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Automotive Engineering

1. Liquan Chen
2. Hong Li
3. Qiang Zhang
4. Yong‐Sheng Hu

In Electrical and Electronic Engineering

1. Liquan Chen
2. Hong Li
3. Yong‐Sheng Hu
4. M. Titirici
5. Qiang Zhang
6. Xuejie Huang
7. Arumugam Manthiram
8. Yu‐Guo Guo

Citations in the corpus

• Progress in thermal stability of all‐solid‐state‐Li‐ion‐batteries (2021, background): “Regarding the mechanism of thermal runaway, Chen et al.124 supposed that O2 released from the oxide SE at rising temperatures induced an exothermic reaction with melted Li metal, eventually leading to thermal runaway (Figure 8(B)).”
• Unlocking the self-supported thermal runaway of high-energy lithium-ion batteries (2021, unknown): “Recently, theoretical calculations have indicated that oxygen generation from solid electrolytes at elevated temperature involves a highly exothermic reaction with molten metallic Li, contributing to thermal runaway of solid-state batteries (SSBs) 32 .”