A new approach to both high safety and high performance of lithium-ion batteries

Shanhai Ge, Yongjun Leng, Teng Liu, Ryan S. Longchamps, Xiao Guang Yang, Yue Gao, Daiwei Wang, Donghai Wang, Chao Yang Wang*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

96 Citations (Scopus)

Abstract

We present a novel concept to achieve high performance and high safety simultaneously by passivating a Li-ion cell and then self-heating before use. By adding a small amount of triallyl phosphate in conventional electrolytes, we show that resistances of the passivated cells can increase by ~5×, thereby ensuring high safety and thermal stability. High power before battery operation is delivered by self-heating to an elevated temperature such as 60°C within tens of seconds. The present approach of building a resistive cell with highly stable materials and then delivering high power on demand through rapid thermal stimulation leads to a revolutionary route to high safety when batteries are not in use and high battery performance upon operation.

Original languageEnglish
Article numbereaay7633
JournalScience advances
Volume6
Issue number9
DOIs
Publication statusPublished - 2020
Externally publishedYes

Fingerprint

Dive into the research topics of 'A new approach to both high safety and high performance of lithium-ion batteries'. Together they form a unique fingerprint.

Cite this

Ge, S., Leng, Y., Liu, T., Longchamps, R. S., Yang, X. G., Gao, Y., Wang, D., Wang, D., & Wang, C. Y. (2020). A new approach to both high safety and high performance of lithium-ion batteries. Science advances, 6(9), Article eaay7633. https://doi.org/10.1126/sciadv.aay7633