A Novel Electrolyte Salt Additive for Lithium‐Ion Batteries with Voltages Greater than 4.7 V. Issue 4 (7th November 2016)

• Record Type: Journal Article
• Authors: Li, Yunchao; Wan, Shun; Veith, Gabriel M.; Unocic, Raymond R.; Paranthaman, Mariappan Parans; Dai, Sheng; Sun, Xiao‐Guang
• Is Part Of: Advanced energy materials. Volume 7:Issue 4(2017)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2016-11-07
• Subjects: electrolyte additives -- high‐voltage batteries -- lithium bis(2‐methyl‐2‐fluoromalonato)borate (LiBMFMB) -- solid‐electrolyte interfaces (SEI) -- spinel LiNi1.5Mn0.5O4 (LNMO); Energy harvesting -- Materials -- Periodicals; Energy conversion -- Materials -- Periodicals; Energy storage -- Materials -- Periodicals; Photovoltaics -- Periodicals; Fuel cells -- Periodicals; Thermoelectric materials -- Periodicals; 621.31
• DOI: 10.1002/aenm.201601397
• Languages: English
• ISSNs: 1614-6832

Abstract

Abstract : Lithium bis(2‐methyl‐2‐fluoromalonato)borate (LiBMFMB), as an additive for LiNi0.5 Mn1.5 O4, 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.