本文選題：二氧化錳 + 水熱法��； 參考：《無機鹽工業(yè)》2017年10期

【摘要】：采用水熱法,在不同的水熱反應(yīng)溫度和反應(yīng)時間條件下制備了兩種晶型和形貌的二氧化錳,并將之用于超級電容器電極材料。借助X射線衍射、掃描電鏡、透射電鏡以及比表面分析儀等測試手段對二氧化錳材料進行物理結(jié)構(gòu)表征。結(jié)果表明:100℃水熱反應(yīng)12 h的產(chǎn)品為納米片狀的δ-MnO_2,其BET比表面積為23.2 m2/g;200℃水熱反應(yīng)36 h的產(chǎn)品為納米線狀的α-MnO_2,其BET比表面積為14.6 m2/g。通過循環(huán)伏安、恒電流充放電和電化學阻抗研究了二氧化錳材料的電化學行為。結(jié)果表明:δ-MnO_2納米片的循環(huán)伏安曲線比α-MnO_2納米線電極更接近于矩形;在0.5 A/g電流密度下,δ-MnO_2納米片的比電容高達283.5 F/g,而α-MnO_2納米線只有227.5 F/g。
[Abstract]:Two kinds of crystalline and morphologic manganese dioxide were prepared by hydrothermal method under different hydrothermal reaction temperature and reaction time and were used as electrode materials for supercapacitor. The physical structure of manganese dioxide was characterized by means of X-ray diffraction, scanning electron microscope, transmission electron microscope and specific surface analyzer. The results show that the product of hydrothermal reaction at 1: 100 鈩，

本文編號：1935353