Journal
ACS APPLIED ENERGY MATERIALS
Volume 1, Issue 5, Pages 1864-1869Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsaem.8b00348
Keywords
single-component coating; Li metal anode; dendrite free; lithium methyl carbonate; LiI; solubility equilibrium
Funding
- Office of Vehicle Technologies of the U.S. Department of Energy through the Advanced Battery Materials Research (BMR) Program (Battery500 Consortium) [DE-EE0007764]
- National Science Foundation [CHE-1338173]
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Lithium methyl carbonate (LMC) is synthesized in a single step and investigated as a coating material for Li protection. The LMC layer can be formed in situ during Li on Cu foil. The chemical and crystal structure of the similar to 1 mu m thick coating is confirmed, which remains intact during lithium cycling. SEM also confirms the dissolution of the LMC layer after being transferred into the commercial LiPF6-carbonate electrolyte. Presaturating the electrolyte with LMC powder prevents the dissolution of the LMC coating layer, which improves the Li plating/stripping Coulombic efficiency from 90.5% (bare Cu in commercial electrolyte) to 96.1% at 0.5 mA cm(-2) and 1 mAh cm(-2).
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