CAJ | 학술논문

采用球磨混合及热复合法制备硫/BP2000复合正极材料(含硫量42％(质量分数)),分别以 PT-FE、明胶和 PEO 作为粘结剂,考察了不同粘结剂对锂-硫电池电化学性能的影响.采用热重分析(TGA)、X射线衍射(XRD)、循环伏安法(CV)和恒流充放电表征其物化性能和电化学性能.结果表明,明胶和 PT-FE对于提高硫正极的电化学性能和维持硫正极的循环稳定性具有积极意义.其中,在0．2 C 充放电时, PTFE 作粘结剂的电池循环50次后比容量保持741．2 mAh/g,明胶作粘结剂的电池循环50次后放电比容量保持788 mAh/g(按单质硫的质量计算).
채용구마혼합급열복합법제비류/BP2000복합정겁재료(함류량42％(질량분수)),분별이 PT-FE、명효화 PEO 작위점결제,고찰료불동점결제대리-류전지전화학성능적영향.채용열중분석(TGA)、X사선연사(XRD)、순배복안법(CV)화항류충방전표정기물화성능화전화학성능.결과표명,명효화 PT-FE대우제고류정겁적전화학성능화유지류정겁적순배은정성구유적겁의의.기중,재0．2 C 충방전시, PTFE 작점결제적전지순배50차후비용량보지741．2 mAh/g,명효작점결제적전지순배50차후방전비용량보지788 mAh/g(안단질류적질량계산).
Ball milling in combination with heat treatment was used to prepare S/C composite cathode materials (sulfur containing was 42wt%).In this paper,the effects of different binders PTFE,gelatin and PEO for lithi-um-sulfur battery were studied respectively.Cyclic voltammetry (CV)and constant current charge-discharge characterized the electrochemical properties.The results showed that gelatin and PTFE as a binder presented positive evaluations for the electrochemical performance of sulfur positive electrode.In the experiment,the dis-charge capacity retains 741.2 mAh/g (based on sulfur weight)after 50 for PTFE at 0.2 C.Gelatin as a binder, the discharge capacity was 788 mAh/g after the 50 cycle for the cycles at the current of 0.2 C.