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- Title
A Novel Electrolyte Salt Additive for Lithium-Ion Batteries with Voltages Greater than 4.7 V.
- Authors
Li, Yunchao; Wan, Shun; Veith, Gabriel M.; Unocic, Raymond R.; Paranthaman, Mariappan Parans; Dai, Sheng; Sun, Xiao‐Guang
- Abstract
Lithium bis(2‐methyl‐2‐fluoromalonato)borate (LiBMFMB), as an additive for LiNi0.5Mn1.5O4, exhibits improved efficiencies and cycling stability. Cyclic voltammograms indicate the cells with additive form good solid‐electrolyte interphases (SEIs) during the first cycle, whereas no additive cell needs more cycles to form a functional SEI. X‐ray photoelectron spectroscopy reveals LiBMFMB could reduce the decomposition of LiPF6 salt and solvents, resulting in thinner SEI.
- Subjects
LITHIUM cells; HIGH voltages; MECHANICAL impedance; X-ray spectroscopy; PHOTOELECTRON spectroscopy
- Publication
Advanced Energy Materials, 2017, Vol 7, Issue 4, pn/a
- ISSN
1614-6832
- Publication type
Article
- DOI
10.1002/aenm.201601397