| 锂离子电池用Si-Fe复合电极材料的制备及其性能 |
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| 引用本文： | 杨娟,唐晶晶,娄世菊,邹幽兰,周向阳.锂离子电池用Si-Fe复合电极材料的制备及其性能[J].中南大学学报(自然科学版),2011,42(4). |
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| 作者姓名： | 杨娟 唐晶晶 娄世菊 邹幽兰 周向阳 |
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| 作者单位： | 中南大学冶金科学与工程学院,湖南长沙,410083 |
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| 摘 要： | 以Fe粉与Si粉为混合粉原料,研究经机械球磨、退火热处理后混合粉的形貌、结构与恒电流充放电性能,同时对比研究Si-Fe合金粉的性能.研究结果表明:混合粉原料经过高能机械球磨,生成了Si-Fe合金相,而Si-Fe合金的生成改善了Si作为锂离子电池负极材料的循环性能;与工业级Si-Fe合金负极材料相比,合金化程度影响了合金材料的电化学性能,合金化程度越高,合金材料电化学性能越好;而退火热处理也可以在一定程度上改善合金材料的脱嵌锂性能.
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| 关 键 词： | Si-Fe合金 锂离子电池 Si基负极 退火 |
Preparation and performance of Si-Fe composite materials for lithium ion batteries |
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| YANG Juan,TANG Jing-jing,LOU Shi-ju,ZOU You-lan,ZHOU Xiang-yang.Preparation and performance of Si-Fe composite materials for lithium ion batteries[J].Journal of Central South University:Science and Technology,2011,42(4). |
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| Authors: | YANG Juan TANG Jing-jing LOU Shi-ju ZOU You-lan ZHOU Xiang-yang |
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| Institution: | YANG Juan,TANG Jing-jing,LOU Shi-ju,ZOU You-lan,ZHOU Xiang-yang (School of Metallurgical Science and Engineering,Central South University,Changsha 410083,China) |
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| Abstract: | Si-Fe composites were prepared by ball-milling a mixture of Si and Fe powders.The morphology,phase structures and electrochemical performances of the composites were investigated after ball-milling and annealing.An industrial Si-Fe alloy material was studied as a comparison.The results show that Si-Fe alloy phase generated in the composites after ball-milling can improve the cyclic performance of Si.By comparing the Si-Fe alloy with the industrial Si-Fe alloy,it is shown that alloying degree affects the ele... |
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| Keywords: | Si-Fe alloy lithium ion battery Si-based anode materials annealing |
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