首页> 外文期刊>Electrochimica Acta >Using a lithium bis(oxalato) borate additive to improve electrochemical performance of high-voltage spinel LiNi_(0.5)Mn_(1.5)O_4 cathodes at 60℃
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Using a lithium bis(oxalato) borate additive to improve electrochemical performance of high-voltage spinel LiNi_(0.5)Mn_(1.5)O_4 cathodes at 60℃

机译:使用双(草酸锂)硼酸锂添加剂改善60°C高压尖晶石LiNi_(0.5)Mn_(1.5)O_4阴极的电化学性能

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摘要

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/LiN_(0.5)Mn_(1.5)O_4 cells with a LiBOB additive is improved at 60℃. To confirm the effects of LiBOB on electrolyte oxidative decomposition, the surface chemistry of separators and high-voltage LiNi_(0.5)Mn_(1.5)O_4 cathodes cycled in electrolytes with and without a LiBOB additive are examined using ex situ attenauted total reflectance-Fourier transform infrared (ATR-FTIR) spectroscopy and X-rayphotoelectron spectroscopy (XPS).
机译:研究了双(草酸硼酸)硼酸锂(LiBOB)作为稳定高压阴极-电解质界面的添加剂。结果表明,在60℃时,添加LiBOB添加剂的Li / LiN_(0.5)Mn_(1.5)O_4电池的电化学性能得到改善。为证实LiBOB对电解质氧化分解的影响,使用异位衰减全反射傅里叶变换对隔膜进行了化学分析,研究了隔膜的化学性质以及在使用和不使用LiBOB添加剂的情况下循环的高压LiNi_(0.5)Mn_(1.5)O_4阴极的化学性质。红外(ATR-FTIR)光谱和X射线光电子能谱(XPS)。

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