Extending the low temperature operational limit of Li-ion battery to −80 °C

Jiang Xu, Xi Wang, Ningyi Yuan, Jianning Ding, Si Qin, Joselito M. Razal, Xuehang Wang, Shanhai Ge, Yury Gogotsi

Research output: Contribution to journalArticle

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Abstract

Achieving high performance during low-temperature operation of lithium-ion (Li+) batteries (LIBs) remains a great challenge. In this work, we choose an electrolyte with low binding energy between Li+ and solvent molecule, such as 1,3-dioxolane-based electrolyte, to extend the low temperature operational limit of LIB. Further, to compensate the reduced diffusion coefficient of the electrode material at ultralow temperature, nanoscale lithium titanate is used as electrode material, which finally, we demonstrate a LIB with unprecedented low-temperature performance, delivering ∼60% of its room-temperature capacity (0.1 °C rate) at −80 °C. Though insufficient ionic conductivity of the electrolyte is generally considered as the main reason for the poor low-temperature performance in LIBs, we found that the sluggish desolvation of solvated Li+ at the liquid-solid interface might be the critical factor. These findings provide evidence for the effective design of robust LIBs for ultralow temperature applications.

Original languageEnglish (US)
Pages (from-to)383-389
Number of pages7
JournalEnergy Storage Materials
Volume23
DOIs
StatePublished - Dec 2019

All Science Journal Classification (ASJC) codes

  • Renewable Energy, Sustainability and the Environment
  • Materials Science(all)
  • Energy Engineering and Power Technology

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    Xu, J., Wang, X., Yuan, N., Ding, J., Qin, S., Razal, J. M., Wang, X., Ge, S., & Gogotsi, Y. (2019). Extending the low temperature operational limit of Li-ion battery to −80 °C. Energy Storage Materials, 23, 383-389. https://doi.org/10.1016/j.ensm.2019.04.033