摘要
采用软化学方法制备出CaSnO3立方晶体,接着将其放入等离子体增强化学气相积淀仪(PECVD)进行吡咯气体辉光放电,使等离子体聚吡咯(PPy)沉积在CaSnO3表面上,获得PPy/CaSnO3复合材料。采用傅里叶转换红外光谱对其化学结构进行表征;利用X射线衍射仪和场发射扫描电子显微镜对CaSnO3改性前后的晶格结构和几何形状进行比较;采用热重分析法考察了复合材料的热稳定性。在此基础上,同时将CaSnO3和PPy/CaSnO3作为锂离子电池的负极材料,制作成双极扣式电池,采用电池充放电仪考察它们的充放电性能,结果显示PPy/CaSnO3的充放电容量都比CaSnO3提高一倍多。
The CaSnO3 cubic crystal prepared using a soft chemistry method was modified by the glue discharge of pyrrole vapor in the plasma enhanced chemical vapor deposition （PECVD） to form the composite of polypyrrole （PPy）/CaSnO3. The chemical structure of PPy/CaSnO3 was characterized by Fourier transform infrared spectroscopy. The lattice structure and geometric shape of CaSnO3 before and after being modified were investigated by X - ray diffraction spectroscopy and scanning electron microscope, respectively. Moreover, thermal gravity analyzer was used to analyze the thermo- stability of PPy/CaSnO3. Based on these investigations, CaSnO3 and PPy/CaSnO3 were applied simultaneously as the battery anode material to prepare the bipolar button cell. Charge - dis- charge test showed that the capacity of the battery assembled with PPy/CaSnO3 composite was 100 percent higher than that of the battery assembled with CaSnO3.
出处
《工程塑料应用》
CAS
CSCD
北大核心
2011年第3期51-55,共5页
Engineering Plastics Application
基金
国家自然科学基金项目(20704039)
河南省高校科技创新人才支持计划项目(2010HASTIT023)
河南省国际科技合作计划项目(094300510078)
关键词
聚吡咯
CaSnO3
等离子体聚合
充放电容量
polypyrrole, CaSnO3, plasma polymerization, charge and discharge capacity
