Enabling high energy density Li-ion batteries through Li2O activation

Ali Abouimrane, Yanjie Cui, Zonghai Chen, Ilias Belharouak, Hamdi Yahia, Huiming Wu, Rajeev Assary, Larry A. Curtiss, Khalil Amine

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17 Citations (Scopus)

Abstract

Lithium oxide (Li2O) is activated in the presence of a layered composite cathode material (HEM) significantly increasing the energy density of lithium-ion batteries. The degree of activation depends on the current rate, electrolyte salt, and anode type. In full-cell tests, the Li2O was used as a lithium source to counter the first-cycle irreversibility of high-capacity composite alloy anodes. When Li2O is mixed with HEM to serve as a cathode, the electrochemical performance was improved in a full cell having an SiO-SnCoC composite as an anode. The mechanism behind the Li2O activation could also explain the first charge plateau and the abnormal high capacity associated with these high energy cathode materials.

Original languageEnglish
Pages (from-to)196-201
Number of pages6
JournalNano Energy
Volume27
DOIs
Publication statusPublished - 1 Sep 2016

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Keywords

  • First cycle irreversibility
  • High energy composite cathode material
  • LiO activation

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Materials Science(all)
  • Electrical and Electronic Engineering

Cite this

Abouimrane, A., Cui, Y., Chen, Z., Belharouak, I., Yahia, H., Wu, H., Assary, R., Curtiss, L. A., & Amine, K. (2016). Enabling high energy density Li-ion batteries through Li2O activation. Nano Energy, 27, 196-201. https://doi.org/10.1016/j.nanoen.2016.06.050