Abstract
Flame retardant(FR) properties were investigated with tricredyl phosphate(TCP) and tris(pentafluorophenyl)phosphine(TFPP) as additives for lithium-ion batteries. Thermal stability was improved with additives in <TEX>$Li/LiNi\frac{1}{3}Mn\frac{1}{3}Co\frac{1}{3}O_2$</TEX> cells comparing to non-additive electrolytes. Oxygen evolution reaction of the cathode material was delayed to up <TEX>$55^{\circ}C$</TEX>, from <TEX>$275^{\circ}C\;to\;330^{\circ}C$</TEX>. Electrolytes with the 1 wt.% additives provided good FR properties while the resonable battery performance is maintained.
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