Lithium Metal Anodes for Rechargeable Batteries

(a) Schematic illustration of a typical Li metal battery. The cathode can be an intercalated material, a sulfur (for Li-S battery) or an air electrolyte (for Li-air battery). (b) An image of typical Li dendrites. (c) Main problems associated with Li dendrites and low Coulombic efficiency of Li deposition/stripping process.

Scientific Achievement

  • Various factors affecting the morphology and Coulombic efficiency of Li metal anodes have been analyzed
  • Theories and experimental approaches on the Li dendrite prevention have been reviewed
  • New approaches on the Li-metal protection are proposed and discussed

Significance and Impact

  • Li metal is an ideal anode material for rechargeable batteries beyond Li ion
  • The review and analysis on results reported in literature point out the ways to suppress Li dendrite growth and to improve Li Coulombic efficiency
  • Provide new perspectives for the application of Li metal as anode in rechargeable batteries in the near future

Research Details

  • Reviewed the models for Li dendrite growth
  • Discussed the characterization of Li surface morphology and the analysis of Li surface films
  • Analyzed Li dendrite prevention by in situ-formed SEI film, ex situ-formed surface coating, mechanical blocking, and self-healing electrostatic shield mechanisms

Work performed at Pacific Northwest National laboratory (JCESR Partner) Wu Xu, Jiulin Wang, Fei Ding, Xilin Chen, Eduard Nasybulin, Yaohui Zhang, Ji-Guang ZhangWu,  “Lithium metal anodes for rechargeable batteries,” Energy Environ. Sci., 2014, 7 (2), 513-537.

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