Material design of high-capacity Li-rich layered-oxide electrodes: Li2MnO3 and beyond

Soo Kim, Muratahan Aykol, Vinay I. Hegde, Zhi Lu, Scott Kirklin, Jason R. Croy, Michael M. Thackeray, Chris Wolverton*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

47 Scopus citations

Abstract

Lithium-ion batteries (LIBs) have been used widely in portable electronics, and hybrid-electric and all-electric vehicles for many years. However, there is a growing need to develop new cathode materials that will provide higher cell energy densities for advanced applications. Several candidates, including Li2MnO3-stabilized LiM′O2 (M′ = Mn/Ni/Co) structures, Li2Ru0.75Sn0.25O3 (i.e., 3Li2RuO3-Li2SnO3), and disordered Li2MoO3-LiCrO2 compounds can yield capacities exceeding 200 mA h g-1, alluding to the constructive role that Li2MO3 (M4+) end-member compounds play in the electrochemistry of these systems. Here, we catalog the family of Li2MO3 compounds as active cathodes or inactive stabilizing agents using high-throughput density functional theory (HT-DFT). With an exhaustive search based on design rules that include phase stability, cell potential, resistance to oxygen evolution, and metal migration, we predict a number of new Li2MIO3-Li2MIIO3 active/inactive electrode pairs, in which MI and MII are transition- or post-transition metal ions, that can be tested experimentally for high-energy-density LIBs.

Original languageEnglish (US)
Pages (from-to)2201-2211
Number of pages11
JournalEnergy and Environmental Science
Volume10
Issue number10
DOIs
StatePublished - Oct 2017

ASJC Scopus subject areas

  • Environmental Chemistry
  • Renewable Energy, Sustainability and the Environment
  • Nuclear Energy and Engineering
  • Pollution

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