Effect of Lithium Difluoro(oxalato)Borate-Based Electrolyte on the Performance of LiNi_0.5Mn_1.5O₄ for High-Voltage Lithium-Ion Batteries

Abstract:

LiNi_0.5Mn_1.5O₄ is a promising 5 V class anode material for high power applications; however, before applying in lithium-ion batteries, it is necessary to find more appropriate electrolyte systems to exert the perfect electrochemical performance of LiNi_0.5Mn_1.5O₄. In this paper, the electrochemical performances of lithium difluoro (oxalato) borate (LiODFB)-sulfolane (SL)/dimethyl carbonate (DMC) electrolyte are investigated. It shows high oxidation potentials (>5.4 V) and satisfactory conductivities. When used in LiNi_0.5Mn_1.5O₄/Li cells, compared to the cell with the electrolyte system of LiPF₆-ethylene carbonate/DMC, LiODFB-SL/DMC electrolyte exhibits more stable cycle performance and higher discharge voltage plateau (>4.64 V).

• Periodical: Advanced Materials Research (Volume 842)
• Pages: 3-6
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.842.3
• Online since: November 2013
• Authors: Xiao Peng Li, Xiao Ling Cui*, Man Yun Wang, Xiu Xiu Wang
• Keywords: High Voltage, LiNi_0.5Mn_1.5O₄, Lithium Bis(oxalato) Borate(LiBOB), Lithium-Ion Battery

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