阻燃剂TCPP与锂离子电池负极材料的相容性

The compatibility of TCPP flame retardant with anode material for Li-ion battery

为了提高阻燃剂磷酸三(2-氯丙基)酯(TCPP)与锂离子电池负极材料中间相碳微球(MCMB)的相容性,在不同TCPP浓度电解液中研究了MCMB的循环伏安和充放电行为。结果表明:当电解液中TCPP的浓度为20%(体积比)时,MCMB/Li电池的首次充电比容量由空白电池的350 mAh/g增加到420 mAh/g,且1 V处平台的容量增加。当TCPP的浓度增加到30%时,MCMB已经不能进行充放电循环。当把MCMB在空白电解液中预循环后,在30%TCPP电解液中可以进行充放电,相应的MCMB/Li电池的充放电实验也得到了相似的结果。热解炭黑与阻燃剂TCPP有较好的相容性。

In order to improve the compatibility of trichloropropylphosphate（TCPP） flame retardant with mesocarbon microbeads （MCMB） anode material for Li-lon battery, the cyclic voltammetry and charge-discharge behaviour of MCMB in different TCPP content electrolytes were studied. The results showed the initial specific charge capacity of MCMB/Li cell increased from 350 mAh/g in blank electrolyte to 420 mAh/g in 20%（V/V） TCPP electrolyte, and the capacity at 1 V plateau increased. MCMB could not be charged and discharged when TCPP content reached 30%. MCMB could be charged and discharged in the 30% TCPP electrolyte after preliminary cycle in blank electrolyte. The similar results were obtained in the charge-discharge test of MCMB/Li cell. The pyrolytic carbon black had good compatibility with TCPP flame retardant.