氟化碳掺杂铬氧化物电池性能研究

Performance studies of chromium oxide batteries doped with fluorinated carbon

将氟化碳材料掺杂到铬氧化物材料中制备成复合极片,以此极片为正极,锂金属为负极组装成锂铬氧化物电池,研究氟化碳对电池性能的影响。采用扫描电子显微镜(SEM)观察粉体材料的形貌,采用X射线衍射光谱(XRD)测试粉体材料的结构;采用电化学工作站进行交流阻抗谱测试;采用蓝电测试平台测试氟化碳掺杂铬氧化物扣式电池和软包电池的放电特性,结果表明:两种物质混合后未发生化学反应,不影响铬基金属氧化物的放电特性;两种物质分别在各自的电压平台下工作;混合物的放电容量等于两个单物质放电容量的总和;氟化物与氧化物混合使用提升了电池的比能量。

The composite electrode was prepared by doping the fluorinated carbon into chromium oxide,and then the lithium chromium oxide battery was prepared by this electrode as the positive electrode and the lithium metal as the negative electrode.The influence of fluorinated carbon on the battery performance was studied.Scanning electron microscope(SEM)was used to observe the morphology of the powder materials.X-ray diffraction(XRD)was used to test the structure of the powder materials.Electrochemical workstation was used to test the AC impedance spectrum.LAND test platform was used to test the discharge characteristics of the fluorinated carbon doped chromium oxide button battery and soft pack battery.The results showed that the fluorinated carbon doping can not affect the performance of the chromium oxide battery discharge characteristics,because there was no chemical reaction between the two substances.The voltage platforms were their own,the discharge was the sum of their respective discharge capacities.The specific energy of battery was increased by using of mixture.