添加剂对多硫代聚苯胺电化学性能的影响

为了提高正极材料多硫代聚苯胺(PSPA)的电化学性能,在PSPA中添加了碳纳米管(CNTs)和纳米SiO2.添加CNTs能够降低PSPA的欧姆电阻,添加纳米SiO2能够降低PSPA的法拉第电荷传递电阻,CNTs和纳米SiO2的协同作用可提高PSPA的放电比容量和循环性能.PSPA(5%CNTs 5%纳米SiO2)的首次放电比容量为650 mAh/g,15次循环后,放电比容量达到553 mAh/g.

Effects of additives on electrochemical performance of polysulfurpolyaniline

Carbon nanotubes(CNTs) and nano-SiO2 were added into polysulfurpolyaniline(PSPA) cathode material to improve its electrochemical performance.The adding of CNTs could decrease the ohmic resistance of the PSPA,and the adding of nanoSiO2 could decrease its Faraday charge transfer resistance.With the synergistic action of CNTs and nano-SiO2,the specific discharge capacity and cycle performance of PSPA were improved.The initial specific discharge capacity of the PSPA(5%CNTs 5% nano-SiO2) was 650 mAh/g and the specific discharge capacity was 553 mAh/g after 15 cycles.