Synthesis of nanosize MnO2 and its performence

Sol sol-gel method and solid phase redox reaction were respectively applied in preparation of Nanos-ize MnO2 powders. The experiments showed that only Mn2O3 could be obtained from ignition of Mn( Ⅱ ) in themuffle furnace in air, and Mn2O3 had to be disproportionated in acids to gain MnO2. The analysis of XRD andTEM technique revealed that the diameters of nanosize MnO2 obtained by sol-gel method was 35 ～45 nm andthe x in MnOx was 1.9; the particle size of MnO2 produced from solid phase redox reaction was 10 ～ 20 nm andthe x in MnOx equaled 1.94. The test results have proved that the discharge property of alkaline-manganese bat-tery could be improved by nanosize MnO2.

作 者： 顧大明 魏杰   作者單位： Dept. of Applied Chemistry, Harbin Institute of Technology, Harbin 150090 ,China  刊 名： 哈爾濱工業(yè)大學學報(英文版)  EI 英文刊名： JOURNAL OF HARBIN INSTITUTE OF TECHNOLOGY(NEW SERIES)  年，卷(期)： 2003 10(2)  分類號： X701  關鍵詞： solid phase synthesis   sol-gel   nanosize MnO2   discharge properties  

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