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Title: Preferential solvation of lithium cations and impacts on oxygen reduction in lithium–air batteries

The solvation of Li⁺ with eleven non-aqueous solvents commonly used as the electrolytes for Li batteries were studied. The solvation preferences of different solvents were compared by means of electrospray mass spectrometry and collision-induced dissociation. The relative strength of the solvent for the solvation of Li⁺ was determined. The Lewis acidity of the solvated Li⁺ cations was determined by the preferential solvation of the solvent in the solvation shell. The kinetics of the catalytic disproportionation of the O₂⁻ depends on the relative Lewis acidity of the solvated Li⁺ ion. The impact of the solvated Li⁺ cation on the O₂ redox reaction was also investigated.
Authors:
 [1] ;  [2] ;  [3] ;  [3] ;  [1]
  1. Univ. of Wisconsin Milwaukee, Milwaukee, WI (United States)
  2. Wuhan Univ. of Technology, Wuhan (China)
  3. Brookhaven National Lab. (BNL), Upton, NY (United States)
Publication Date:
OSTI Identifier:
1214540
Report Number(s):
BNL--108382-2015-JA
Journal ID: ISSN 1944-8244; R&D Project: MA453MAEA; VT1201000
Grant/Contract Number:
AC02-98CH10886
Type:
Accepted Manuscript
Journal Name:
ACS Applied Materials and Interfaces
Additional Journal Information:
Journal Volume: 7; Journal Issue: 36; Journal ID: ISSN 1944-8244
Publisher:
American Chemical Society
Research Org:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Org:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Vehicle Technologies Office (EE-3V)
Country of Publication:
United States
Language:
English
Subject:
25 ENERGY STORAGE superoxide; solvation; lithium ion; ESI/MS; oxygen reduction