SnO2/C电极的制备及超电性能研究

Study on Super-electrical Properties and Preparation of SnO2/C Electrodes

采用了水热法制备二氧化锡纳米材料,后续掺入导电碳粉制备SnO2/C复合材料.应用X射线衍射(XRD)对样品进行了表征.采用了循环伏安法、阻抗以及恒流充放电等测试来考察样品的性能.实验结果表明:SnO2纳米材料具有良好的超电性能,有较小的内阻,在1 mA电流下进行充放电测试,比容量达45 F·g^-1.掺杂碳粉之后,当质量比为SnO2∶C=1∶2时,比电容可达到82.12 F·g^-1,说明碳粉的掺入大大的提高了SnO2的催化性能.

Stannic anhydrid nanomaterials were prepared by a hydrothermal method and then doped with conductive carbon powder to prepare composites of SnO2/C.The samples were characterized by X-ray diffraction(XRD). Cyclic voltammetry,impedance and constant current charge-discharge tests were used to investigate their performance. The SnO2 nanomaterials demonstrated good super-electrical performance and littleinternal resistance. The charge-discharge test was carried out at a current of 1 mA with a specific capacity of 45 F·g^-1. After doping carbon,when the mass ratio was SnO2∶C=1∶2,the specific capacitance could reach 82.12 F·g^-1. This indicates that the addition of carbon powder greatly improved the catalytic performance of SnO2.