纳米-MnO2的制备及其性能研究

用溶胶－凝胶法制备纳米级α－ＭｎＯ２，并对实验条件进行了讨论．对所得的样品进行了ＸＲＤ、ＩＣＰ、ＴＥＭ、化学分析、恒流放电、循环伏安等一系列测试，并与国际一号样（Ｉ．Ｃ．ＮＯ．１电解二氧化锰）相比较．虽然纳米级α－ＭｎＯ２的单独放电性能并不好，但是当纳米级α－ＭｎＯ２以一定比例与Ｉ．Ｃ．Ｎｏ．１号样混合时，在浅度和深度放电区内的放电容量都比Ｉ．Ｃ．Ｎｏ．１高．

Synthesis and Performance of Nano Phase -MnO2

A nano-grade -MnO2 was prepared by a sol-gel method. The optimum condition to form -MnO2 was discussed. The measurements such as XRD, TG, SEM, ICP, TEM, chemical analysis，constant current discharge，cyclic voltammetry test, were performed and compared with that of I.C.No.1 (international common MnO2 sample No.1EMD). Although the discharge performance of the nano-grade -MnO2 is not better, the discharge capacity of the nano-grade -MnO2 mixed with I.C.No.1 at a certain weight ratio is higher than that of I.C.No.1 in shallow and deepdischarge stages.