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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- Using a lithium bis(oxalato) borate additive to improve electrochemical performance of high-voltage spinel LiNi0.5Mn1.5O4 cathodes at 60 degrees C
- Ha, Se-Young; Han, Jung-Gu; Song, Young-Min; Chun, Myung-Jin; Han, Sang-Il; Shin, Woo-Cheol; Choi, Nam-Soon
- Electrolyte; High-voltage spinel cathode; Li-ion battery; Lithium bis(oxalato)borate; Solid electrolyte interphase
- Issue Date
- PERGAMON-ELSEVIER SCIENCE LTD
- ELECTROCHIMICA ACTA, v.104, no., pp.170 - 177
- 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).
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