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以自制的ZnO纳米棒为模板合成了MnO2纳米棒。x-射线衍射、红外光谱和透射电镜等对产物成分、晶型结构及其形貌的分析结果表明,所得样品均为平均直径20nm左右、平均长度约180nm的α-MnO2纳米棒。循环伏安和恒流充放电测试分析所得样品超级电容特性的结果表明,在1mol/L Na2SO4水溶液中,2mA电流和0～1.0V(vs SCE)电位范围内,所得MnO2电极的初始放电比容量可达到105F/g,1000次循环充放电后电极的放电比容量保持率近90%。
MnO2 nanorods were synthesized by using self-made ZnO nanorods as templates. The results of X-ray diffraction, infrared spectroscopy and transmission electron microscopy showed that the obtained samples were α-MnO2 nanorods with an average diameter of about 20 nm and an average length of about 180 nm. The results of cyclic voltammetry and constant current charge-discharge test showed that the initial discharge capacity of MnO2 electrode in 1mol / L Na2SO4 aqueous solution at 2mA and 0 ~ 1.0V (vs SCE) Can reach 105F / g, after 1000 cycles charge and discharge electrode discharge capacity retention rate of nearly 90%.