| 锂离子电池微孔Sn-Co-C负极的制备及其性能 |
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| 引用本文： | 东栋,于维平.锂离子电池微孔Sn-Co-C负极的制备及其性能[J].材料热处理学报,2011,32(8). |
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| 作者姓名： | 东栋 于维平 |
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| 作者单位： | 北京航空航天大学工程训练中心,北京,100191 |
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| 基金项目： | 国家高技术研究发展计划(2006AA03Z230); 北京市自然科学基金(2062014) |
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| 摘 要： | 采用模板-电沉积法制备锂离子电池Sn-Co-C微孔负极。首先,采用聚合法制备PS球乳液。然后,再以柠檬酸、EDTA为络合剂,CoCl2、SnCl4为主盐,添加甲酸和PS球乳液的电解液中,电沉积制备Sn-Co-C微孔复合电极材料。随后采用EDS、XRD和SEM分析其元素成分、晶体结构和表面形貌。最后采用恒流充放电和交流阻抗测试其电化学性能。结果表明,电极表面的微孔可以缓解锂电池充放电过程中产生的体积变化所导致的活性物质脱落,提高循环性能和寿命。Sn-Co-C负极组成的电池首次充放电比容量分别为705.4和1105 mA.h.g-1,循环126次后充放电比容量分别为393.3和403.2 mA.h.g-1。
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| 关 键 词： | 微孔 Sn-Co-C复合电极 锂电池 |
Preparation and performance of micropore Sn-Co-C cathode for lithium-ion battery |
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| DONG Dong,YU Wei-ping.Preparation and performance of micropore Sn-Co-C cathode for lithium-ion battery[J].Transactions of Materials and Heat Treatment,2011,32(8). |
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| Authors: | DONG Dong YU Wei-ping |
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| Affiliation: | DONG Dong,YU Wei-ping(Training Centre of Engineering,Beihang University,Beijing 100191,China) |
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| Abstract: | Sn-Co-C cathode with micro-pore structure used for lithium-ion battery was synthesized by template-assisted electrodeposition.Firstly,PS emulsion were synthesized by polymerization.Secondly,Sn-Co-C alloy negative electrodes were prepared by electrodeposition in a solution containing citric acid and EDTA(as the complexing agents),CoCl2 and SnCl4(as the major salts),formic acid and PS emulsion,and then EDS,XRD and SEM were used to analyse the element constituent,crystal structure and surface morphology of the... |
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| Keywords: | micropore Sn-Co-C lithium-ion battery |
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