Citation:
Li Juan, Li Qingwen, Xia Xi. Synthesis of Nanosize MnO2 by Solid State Reaction and Its Electrochemical Property Ⅲ.Synthesis and Performance of α-MnO2[J]. Chinese Journal of Applied Chemistry,
;1999, 16(3): 103-105.
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Nanoparticles of α-MnO2 were prepared by one-step solid state redox reaction at room temperature or 60℃. The solid state reaction was studied by XRD and TEM observation. It is shown that the time of grinding directly affected the crystalline type of the products from amorphous MnO2 to unstable δ-MnO2 and stable α-MnO2. The reaction rate of KMnO4 with MnCl2·4H2O was greater than that with Mn(Ac)2·H2O. The dischrge capacity of α-MnO2 nanoparticles was larger than that of International Common Sample No.1 electrolytic MnO2 especially in heavy load discharge.
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