Lithiated Spinel LiCo1-xAlxO2 as a Stable Zero-Strain Cathode

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Author(s)

  • Eungje Lee
  • Bob Jin Kwon
  • Fulya Dogan
  • Jason R. Croy
  • Michael M. Thackeray

Detail(s)

Original languageEnglish
Pages (from-to)6170-6175
Journal / PublicationACS Applied Energy Materials
Volume2
Issue number9
Online published6 Sep 2019
Publication statusPublished - 23 Sep 2019
Externally publishedYes

Abstract

We report the discovery of a new zero-strain cathode, LiCo1-xAlxO2 (0 < x ≤ 0.5), which has a lithiated spinel structure synthesized at "low temperature" (LT). Lithiated spinel LiCo1-xAlxO2 operates at the highest average potential (3.7 V vs Li) with the lowest volume change (ΔV ≤ 0.02%) ever reported for a zero-strain lithium electrode. Unlike other zero-strain spinel materials such as Li4Ti5O12 and LiRh2O4 that undergo a reversible two-phase reaction, lithiated spinel LiCo1-xAlxO2 electrodes operate by a single-phase process. The study opens the door to the design of a new family of zero-strain materials that can be used as a stable cathode for all-solid-state batteries.

Research Area(s)

  • aluminum substitution, cathode, lithiated spinel, lithium-ion battery, solid-state battery, zero-strain

Citation Format(s)

Lithiated Spinel LiCo1-xAlxO2 as a Stable Zero-Strain Cathode. / Lee, Eungje; Kwon, Bob Jin; Dogan, Fulya; Ren, Yang; Croy, Jason R.; Thackeray, Michael M.

In: ACS Applied Energy Materials, Vol. 2, No. 9, 23.09.2019, p. 6170-6175.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review