热电池用FeS_2/电解质复合薄膜正极的制备及性能

Preparation and performance of FeS_2/electrolyte separator composite film positive electrode for thermal battery

采用超声喷涂技术及丝网印刷薄膜化工艺制备了FeS_2/电解质隔膜复合薄膜正极,研究了薄膜正极中电解质添加量、三种碳材料导电剂及导电剂的不同添加量对单体电池放电性能的影响,通过扫描电子显微镜(SEM)对FeS_2正极在电解质隔膜上的表面形态进行了表征。实验结果表明,一体化薄膜正极中电解质添加量对正极材料的影响较小,含量为15%时较为适宜。一体化薄膜正极中乙炔黑、活性炭和CNTs的适宜添加量分别为3%,3%和1%。

FeS2/electrolyte separator composite film cathodes were prepared by ultrasonic spray and screen printing preparation process.The effects of the contents of electrolyte and conductive agents in the active layer on the discharge performance of the single cells were studied by a land electrochemical workstation.The loading condition of FeS2 positive electrode on electrolyte membrane was characterized by scanning electron microscopy(SEM).The results show that the content of electrolyte has little effect on integrated composite film cathode performance with the appropriate composition of 15%.The optimal contents of acetylene black,activated carbon and CNTs in the composite film are 3%,3%and 1%.