Preparation of polypyrrole coated with conductive carbon black/indium oxide composite and its application in lead-acid batteries

被引：0
|
作者：
Liu F. [1 ,2 ]
Chen Y. [1 ]
Liu Y. [1 ]
Chen S. [1 ]
Zhang Y. [1 ,2 ]
机构：
[1] Key Laboratory of Optoelectronic Materials Chemistry and Physics, Fujian Institute of Research, The Structure of Matter, Chinese Academy of Sciences, Fuzhou
[2] University of Chinese Academy of Sciences, Beijing
来源：
Fuhe Cailiao Xuebao/Acta Materiae Compositae Sinica | 2022年 / 39卷 / 12期
关键词：
high-rate partial-state-of-charge; hydrogen evolution; lead-acid battery; polypyrrole coated with conductive carbon black/indium oxide composite; sulfation;
D O I：
10.13801/j.cnki.fhclxb.20211231.001
中图分类号：
学科分类号：
摘要：
In order to improve the irreversible sulfation and hydrogen evolution of the negative electrode of lead-acid batteries, in this study, the olypyrrole coated with conductive carbon black/indium oxide composite [PPy@(C/In2O3)] were prepared by in-situ oxidation polymerization on C/In2O3. The composite materials were characterized by SEM, FTIR, BET and XRD. The electrochemical performance of the composites was analyzed by CV and LSV. Finally, the PPy@(C/In2O3) composite materials were added in the negative active material of lead-acid batteries. The effect of composite materials on the high-rate partial-state-of-charge (HRPSoC) performance of lead-acid batteries was investigated. The results show that the PPy@(C/In2O3) retain the structural feature of C, and have larger specific surface area than PPy, and have higher hydrogen evolution over-potential and capacitance than C. When PPy@(C/In2O3) composite materials were added to the negative active material of the lead-acid batteries, it can not only reduce the internal resistance of the negative plate and inhibit the negative sulfation problem of the batteries, but also reduce the hydrogen evolution problem of the negative electrode of the batteries. At the same time, the discharge capacity significantly improves the cycle life of the lead-acid batteries under the HRPSoC operation. Finally, the lead-acid batteries containing the negative plate of PPy@(C/In2O3) show excellent HRPSoC cycle life which increased by 1.78 times compared with the cycle life of the blank battery. © 2022 Beijing University of Aeronautics and Astronautics (BUAA). All rights reserved.
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页码：5747 / 5757
页数：10
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