球形α-MnO_2的制备及其电化学性能

Synthesis of α-MnO_2 spheres and its electrochemical performances

研究了α-MnO2球的合成,利用各种检测方法对样品的形貌、结构进行表征,并对所得样品的电化学性能进行了测试。SEM和TEM分析表明所合成产物是由直径0.3～3μm的球形颗粒构成。样品的电容性能研究表明,实验合成的样品的电容性能较好,电容的稳定性好,是理想的超级电容器的电极材料。

In this dissertation, α-MnO2 spheres have been synthesized by a mild wet chemical method. The morphology and structure of the as-prepared products were characterized via some measurement techniques, and their electrochemical properties have been investigated. SEM and TEM images indicate that the resultant products consist of spherical particles with diameters ranging from 0.3 to 3 μm. The experimental results show that the products which was synthesized have higher specific capacitance and good capacitance stability, they are perfect electrode material for super capacitor.