摘要
采用亲核取代的方法制备了含硫聚磷腈正极材料,并与金属锂组装成扣式电池。傅里叶变换红外(FTIR)光谱证明,材料中存在S-S键;恒流充放电测试表明:当电流为60mA/g时,含硫聚磷腈正极材料的初始放电比容量为754.5mAh/g,第30~50次循环的放电比容量稳定在120~100mAh/g;循环伏安测试表明:材料具有2.6V的阳极峰和2.4V、2.0V及1.0V的阴极峰。
Cathode material sulfur-containing polyphosphazene was synthesized by the methods of nucleophilic substitution and button ceils were assembled with metal lithium. Fourier transform infrared(FTIR) spectroscopy proved that S--S bond was existed in the material. Galvanostatic charge/discharge test showed that the initial specific discharge capacity of the sulfur-containing polyphosphazene was 754.SmAh/g at the current of 60 mA/g, the discharge specific capacity stab/lized at 120 - 100 mAh/g in the 30 - 50th cycle. Cyclic voltammetry test showed the material had an anodic peak at 2,6V and cathodic peaks at 2.4 V,2.0 V and 1.0V.
出处
《电池》
CAS
CSCD
北大核心
2009年第4期203-205,共3页
Battery Bimonthly
基金
福建省自然科学基金(U0650013)
福州大学科技发展基金(2006-XQ-10)
关键词
正极材料
聚磷腈
放电性能
锂/硫电池
cathode material
polyphosphazene
discharge performance
Li/S battery