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Choi, Nam-Soon
Energy Materials Lab
Research Interests
  • Rechargeable lithium battery, electrolytes for next generation Mg and Na battery

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Using a lithium bis(oxalato) borate additive to improve electrochemical performance of high-voltage spinel LiNi0.5Mn1.5O4 cathodes at 60 degrees C

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Title
Using a lithium bis(oxalato) borate additive to improve electrochemical performance of high-voltage spinel LiNi0.5Mn1.5O4 cathodes at 60 degrees C
Author
Ha, Se-YoungHan, Jung-GuSong, Young-MinChun, Myung-JinHan, Sang-IlShin, Woo-CheolChoi, Nam-Soon
Keywords
Electrolyte; High-voltage spinel cathode; Li-ion battery; Lithium bis(oxalato)borate; Solid electrolyte interphase
Issue Date
201308
Publisher
PERGAMON-ELSEVIER SCIENCE LTD
Citation
ELECTROCHIMICA ACTA, v.104, no., pp.170 - 177
Abstract
Lithium bis(oxalato) borate (LiBOB) is investigated as an additive for the stabilization of a high-voltage cathode-electrolyte interface. It is found that the electrochemical performance of Li/LiNi0.5Mn1.5O4 cells with a LiBOB additive is improved at 60°C. To confirm the effects of LiBOB on electrolyte oxidative decomposition, the surface chemistry of separators and high-voltage LiNi0.5Mn1.5O4 cathodes cycled in electrolytes with and without a LiBOB additive are examined using ex situ attenuated total reflectance-Fourier transform infrared (ATR-FTIR) spectroscopy and X-ray photoelectron spectroscopy (XPS).
URI
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DOI
http://dx.doi.org/10.1016/j.electacta.2013.04.082
ISSN
0013-4686
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