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Updated: Sep 11, 2026
Identification and Quantification of Decomposition Mechanisms in Lithium-Ion Batteries; Input to Heat Flow Simulation for Modeling Thermal Runaway
Published on: March 7, 2022
Operando FBG-DEMS decouples stress evolution and gas release in Li-rich Mn-based layered oxide cathodes
Xinya Tang1, Zebo Gu1, Junyong Deng1
1CVC Testing Technology Co., Ltd., China National Electric Apparatus Research Institute Co., Ltd, Guangzhou, 510000, China. J-Chen@cei1958.com.
Abstract:
This work explores degradation of Li-rich Mn-based layered oxide cathodes using an operando FBG-DEMS platform for simultaneous strain and gas detection. Variable-temperature tests reveal a consistent temporal offset where stress-related relaxation precedes O2 evolution across 5-55 °C, providing experimental constraints for understanding the chronological sequence of cathode degradation.
