以KMnO4和乙醇经氧化还原反应所得γ-MnOOH为前驱物,在10 mol/L KOH溶液中于140℃水热条件下反应72 h,制得了比表面积为53 m2/g的带状Birnessite型层状氧化锰.应用XRD、SEM和氮气吸脱附等技术对制备产物进行了结构和形貌表征.同时,在1.0 mol/L Na2SO4水溶液中研究了带状氧化锰的电容性质.结果显示,当扫描速度为5 mV/s时,其比电容为180F/g.循环测试2000圈后,比电容保持率为72％.
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