Transforming rate capability through self-heating of energy-dense and next-generation batteries

Ryan S. Longchamps, Xiao Guang Yang, Shanhai Ge, Teng Liu, Chao Yang Wang*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

14 Citations (Scopus)

Abstract

We demonstrate that an energy-dense, 288 Wh kg−1 lithium-ion battery can provide 152 Wh kg−1 energy and 1056 W kg−1 power at ultralow temperatures such as −40 or −50 °C, contrary to virtually no performance expected under two simultaneous extremes: 4.04 mAh cm−2 cathode loading and −40 °C. Unleashing this huge potential of current battery materials is achieved through a self-heating structure by embedding a micron-thin nickel foil in the electrochemical energy storage cell. The heating process from −40 to 10 °C consumes only 5.1% of battery energy and takes 77 s. Further, based on the chemistry agnostic nature of self-heating, we present a generic chart to transform rate capability of lithium-ion and lithium metal batteries. These illustrative examples point to a new era of battery structure innovation, significantly broadening the performance envelopes of existing and emerging battery materials for electrified transportation.

Original languageEnglish
Article number230416
JournalJournal of Power Sources
Volume510
DOIs
Publication statusPublished - 31 Oct 2021
Externally publishedYes

Keywords

  • Energy density
  • Lithium metal battery
  • Lithium-ion battery
  • Low temperature
  • Self-heating

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Longchamps, R. S., Yang, X. G., Ge, S., Liu, T., & Wang, C. Y. (2021). Transforming rate capability through self-heating of energy-dense and next-generation batteries. Journal of Power Sources, 510, Article 230416. https://doi.org/10.1016/j.jpowsour.2021.230416