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Citation: YAO Hai-Jun, LIU Xian-Ming, ZHANG Xiao-Gang, XIA Xi. Nanophase PbTiO₃ Modified MnO₂ Electrodes[J]. Chinese Journal of Applied Chemistry, ;2003, 20(4): 336-340. shu

Nanophase PbTiO₃ Modified MnO₂ Electrodes

1.
Institute of Applied Chemistry, Xinjiang University, Urumqi 830046

Corresponding author: ZHANG Xiao-Gang,
Received Date: 9 October 2002
Available Online: 20 December 2002
Fund Project: 国家自然科学基金资助项目(50143023) (50143023)

Nanosized PbTiO₃ powder was prepared by a sol-gel method and characterized by XRD,TEM and CV techniques.PbTiO₃ modified MnO₂ electrodes were fabricated and their electrochemical behavior were studied by means of galvonostatic charge-discharge and CV experiments.The results indicated that the nano-sized PbTiO₃ forms a series of complex oxides with MnO₂ of different valency and prevents the formation of Mn₃O₄ during the course of electrode reaction.The discharge capacity of MnO₂ electrodes modified with 5.0% (mass fraction) nanophase PbTiO₃ is in average 45% higher than that of I.C.No.1 in 40% (mass fraction) KOH electrolytes,and chargedischarge efficiency is much improved by 10%~40%.
- MnO₂ electrode,
- nanophase PbTiO₃,
- modified additive,
- discharge capacity
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Nanophase PbTiO₃ Modified MnO₂ Electrodes