Zn│纳米TiO_2-聚苯胺二次电池的充放电性能

The Charge-discharge Behavior of Zn│Nano-TiO_2-PANI Rechargeable Battery

以 1 0mol/L硫酸为介质 ,于 0 8V恒电位下 ,在纳米TiO2 (Nano TiO2 )膜电极上实现了苯胺 (Aniline)的电化学聚合 ,借助透射电镜、X射线衍射、红外光谱等对制得的Nano TiO2 /聚苯胺 (Nano TiO2 /PANI)复合膜进行了表征。用Nano TiO2 │PANI作为二次电池的正极 ,Zn为负极 ,在不同的电流密度下对Zn│Nano TiO2 PANI二次电池的充放电性能进行了研究。结果表明 ,二次电池首次充电容量可达 98 0 4mA·h/g ,充放电效率为 91 6 7% 。

Aniline was polymerized on a nanocrystalline titanium dioxide film electrode(Nano-TiO 2) in 1.0 mol/L sulfuric acid by the potentiostatic method. The structure of the composite film was characterized by TEM, XRD and FTIR. Nano-TiO 2/polyaniline was used as a positive electrode active material for Zn│Nano-TiO 2-PANI rechargeable battery. The charge-discharge behavior of the rechargeable battery and the coulomb efficiency were investigated. The result shows that the initial chargeable capacity and reversible efficiency of the rechargeable battery are 98.04 mA·h/g and 91.67% respectively, charge-discharge curves are observeved stable.