Materials challenges in rechargeable lithium-air batteries

D. G. Kwabi*, N. Ortiz-Vitoriano, S. A. Freunberger, Yuhui Chen, N. Imanishi, P. G. Bruce, Y. Shao-Horn

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

122 Citations (Scopus)

Abstract

Lithium-air batteries have received extraordinary attention recently owing to their theoretical gravimetric energies being considerably higher than those of Li-ion batteries. There are, however, significant challenges to practical implementation, including low energy efficiency, cycle life, and power capability. These are due primarily to the lack of fundamental understanding of oxygen reduction and evolution reaction kinetics and parasitic reactions between oxygen redox intermediate species and nominally inactive battery components such as carbon in the oxygen electrode and electrolytes. In this article, we discuss recent advances in the mechanistic understanding of oxygen redox reactions in nonaqueous electrolytes and the search for electrolytes and electrode materials that are chemically stable in the oxygen electrode. In addition, methods to protect lithium metal against corrosion by water and dendrite formation in aqueous lithium-air batteries are discussed. Further materials innovations lie at the heart of research and development efforts that are needed to enable the development of lithium-oxygen batteries with enhanced round-trip efficiency and cycle life.

Original languageEnglish
Pages (from-to)443-452
Number of pages10
JournalMRS Bulletin
Volume39
Issue number5
DOIs
Publication statusPublished - May 2014

Keywords

  • Nonaqueous LI-O-2 batteries
  • Ray photoelectron-spectroscopy
  • Li-air
  • Oxygen reduction
  • Lithium/polymer cells
  • Liquid electrolytes
  • Dendrite formation
  • Superoxide ion
  • High-capacity
  • Solid-state
  • nergy storage
  • surface chemistry
  • Li
  • spectroscopy
  • morphology

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