| INORGANIC MATERIALS AND CERAMIC MATRIX COMPOSITES |
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| The Effects of Active Carbon on the Microstructure and Electrochemical Performance of Negative Electrode Active Material in Lead-acid Batteries |
| GAO Jun1, CHEN Xueneng1, CAI Yuezong1, HUANG Lianqing2, LIN Hongming2, YANG Yong1
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1 College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005
2 Fujian Minhua Power Source Co., Ltd, Quanzhou 362442 |
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Abstract The effects of active carbon with high specific surface area on the microstructure and electrochemical properties of the negative electrode active material of lead-acid battery were studied. The results show that the addition of 0.5% SPC04 type active carbon into negative electrode is able to increase the discharge capacity of the negative electrode at 1C, 5C and 10C rates by 18.36%, 42.68% and 44.01%, and the discharge cycle life of the ne-gative electrode at 2C 60 s is doubled. The test results of 6-FM-9F type battery show that not only under high-rate partial-state-of-charge (HRPSoC) conditions, but also under full-charge and full-discharge conditions the cycle life has been significantly improved. Through the analysis of the microstructure of active material, it is believed that the addition of active carbon can significantly change the particle morphology and pore structure. The addition of active carbon can make the particles and pore distribution of the negative electrode more uniform, the size of the particle is moderate, and the ratio of the effective aperture range (about 0.4—3 μm) between the particles of the active material is increased.
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Published: 29 August 2019
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| About author:: Jun Gao received his B.E. degree in applied chemistry from the Northeast University of Technology in Aug. 1992, and received his Ph.D. degree in applied che-mistry from the Harbin Institute of Technology (HIT) in Dec. 2005. He has published more than 30 journal papers, applied 10 national invention patents and 5 of them were authorized. His research interests are electrochemical power source and its related materials.Yong Yang obtained his Ph.D. in physical chemistry from Xiamen University in 1992 with two years in-split PhD study in UK. Except for a one-year (1997—1998) academic visit at Oxford University, he has been working in the State Key Laboratory for Physical Che-mistry of Solid Surface at Xiamen University since 1992. Now he is a distinguished professor in Chemistry and Director of Research Institute of Electrochemistry and Electrochemical Engineering over there. His main research interests are new electrode/electrolyte materials for Li/Na-ion batte-ries, in-situ spectroscopic techniques, and reaction mechanism study in electrochemical energy storage and conversion system. He has published over 200 papers in national/international journals such as Nature Energy, Energy & Environmental Science, Advanced Materials and Chem. Mater., etc. with citation more than 6 000. He is also one of the editors for Journal of Power Sources. He has obtained several national/international research awards, e.g. Contribution award given by Chinese Electrochemical Society in 2017, Technology Award given by IBA (International Battery Materials Association) in 2014. |
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2019, Vol. 33 
