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Citation: Xia Xi, Men Chuanling. Studies on the Preparation and Electrochemical Behavior of Nano-order MnO₂ Ⅱ. Preparation and Performance of Bishmuth Doped MnO₂ by Sol-gel Method[J]. Chinese Journal of Applied Chemistry, ;1998, 15(1): 13-16. shu

Studies on the Preparation and Electrochemical Behavior of Nano-order MnO₂ Ⅱ. Preparation and Performance of Bishmuth Doped MnO₂ by Sol-gel Method

Xia Xi ,
Men Chuanling

Institute of Applied Chemistry, Xinjiang University, Urumqi 830046

Received Date: 22 April 1997
Revised Date: 9 September 1997

Nanometer order bismuth doped chemical manganese dioxide (nm-Bi-CMD) was prepared by sol-gel method. The results of XRD, TEM, ICP measurements and chemical analysis showed that the sample was of γ-type crystal structure, and in nano size. Mixing the nm-Bi-CMD with Bi-EMD(electrolytic maganese dioxide) in optimum weight ratio in-creased the charge/discharge performance of the products. Cycle volrammogram, AC con-ductivity and AC impedance measurements showed that the doping of nm-Bi-CMD, decreas-ing the resistance between crystal grains of the doped samples, raised the surface roughness and improved the stability of the electrode surface.
- bismuth doped manganese dioxide,
- nano meter material,
- sol gel method,
- preparation
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Studies on the Preparation and Electrochemical Behavior of Nano-order MnO2 Ⅱ. Preparation and Performance of Bishmuth Doped MnO2 by Sol-gel Method

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Studies on the Preparation and Electrochemical Behavior of Nano-order MnO₂ Ⅱ. Preparation and Performance of Bishmuth Doped MnO₂ by Sol-gel Method