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Citation: ZHANG Qi-Wei, ZHONG Jian-Sheng, HUANG Xing-Kang, HUANG He-Ning, YANG Yong. Preparation and Properties of δ-MnO₂[J]. Chinese Journal of Applied Chemistry, ;2005, 22(8): 908-911. shu

Preparation and Properties of δ-MnO₂

1.
a Department of Chemical and Biological Engineering, Sanming College, Sanming 365004;
2.
b Department of Chemistry, Xiamen University, Xiamen

Corresponding author: ZHANG Qi-Wei,
Received Date: 8 October 2004
Available Online: 23 January 2005
Fund Project: 福建省教育厅资助项目(JB02193) (JB02193)

δ-Manganese dioxide (δ-MnO₂) was prepared from a Mn(Ⅱ) salt oxidized by ammonium persulfate ((NH₄)₂S₂O₈).The crystalline form of the δ-MnO₂ was affected by the molar ratio of Mn²⁺to OH^-,reaction temperature,and the amount of (NH₄)₂S₂O₈.The structure of the δ-MnO₂ was characterized by means of X-ray diffraction (XRD) and Infrared spectroscopy (IR).Its electrochemical performance was also studied via cyclic voltammetry and constant current charge/discharge experiments.The results indicate that as-prepared δ-MnO₂ has a good layer-structure and a high discharge capacity (~160 mA·h/g,2.0~4.5 V).
- δ-MnO₂,
- preparation,
- property
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Preparation and Properties of δ-MnO2

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通讯作者: 陈斌, bchen63@163.com

Preparation and Properties of δ-MnO₂