| 石墨负极材料形态对LiFePO4动力电池性能的影响 |
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| 引用本文： | 陈 鹏,钱 龙,邓昌源,王海涛,焦奇方,刘家捷,饶睦敏. 石墨负极材料形态对LiFePO4动力电池性能的影响[J]. 新能源进展, 2016, 4(3): 195-200. DOI: 10.3969/j.issn.2095-560X.2016.03.005 |
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| 作者姓名： | 陈 鹏 钱 龙 邓昌源 王海涛 焦奇方 刘家捷 饶睦敏 |
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| 作者单位： | 1. 深圳市沃特玛电池有限公司，广东 深圳 518118；2. 北京理工大学珠海学院化工与材料学院，广东 珠海 519088 |
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| 基金项目： | 广东省科技计划项目（2014B010128010，2014B010123002，2015B010135010） |
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| 摘 要： | 本文分别以树脂包覆天然石墨（RCNG）、人造石墨（AG）和中间相碳微球（MCMB）为负极材料，制备了三种不同的圆柱形磷酸铁锂（LiFePO4）动力电池。通过X射线衍射分析仪（XRD）和扫描电子显微镜（SEM）对材料的晶体结构与形貌进行表征，并采用多种手段测试了各动力电池的电化学性能。结果显示，磷酸铁锂/中间相碳微球（LFP/MCMB）电池表现出较为优异的电化学低温、倍率和循环性能，其在 −20℃下的1 C容量保持率为61.04%，6 C高倍率容量保持率和温升分别为87.52%和24.8℃，3 C循环1 000次后容量保持率为93.81%。
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| 关 键 词： | LiFePO4 石墨 动力电池 电化学性能 |
| 收稿时间： | 2016-02-29 |
Impacts of Graphite Negative Materials Morphology on the Performance of LiFePO4 Power Battery |
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| CHEN Peng,QIAN Long,DENG Chang-yuan,WANG Hai-tao,JIAO Qi-fang,LIU Jia-jie,RAO Mu-min. Impacts of Graphite Negative Materials Morphology on the Performance of LiFePO4 Power Battery[J]. Advances in New and Renewable Energy, 2016, 4(3): 195-200. DOI: 10.3969/j.issn.2095-560X.2016.03.005 |
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| Authors: | CHEN Peng QIAN Long DENG Chang-yuan WANG Hai-tao JIAO Qi-fang LIU Jia-jie RAO Mu-min |
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| Affiliation: | 1. Shenzhen OptimumNano Battery Co., Ltd, Shenzhen 518118, Guangdong, China;
2. School of Chemical & material, Zhuhai Campus of Beijing Institute of Technology, Zhuhai 519088, Guangdong, China |
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| Abstract: | Three different cylindrical lithium iron phosphate (LiFePO4) power batteries were fabricated by using resin-coated natural graphite (RCNG), artificial graphite (AG) and mesophase carbon microbeads (MCMB) as negative material, respectively. Crystalline structure and morphology of the materials werecharacterized by X-ray diffraction analyzer (XRD) and scanning electron microscopy (SEM). Electrochemical performance of each power battery was tested by various charge/discharge means. The results showed that the lithium iron phosphate/mesophase carbon microbeads (LFP/MCMB) battery exhibited better electrochemical performance in low temperature, rate and cycle performance. It remained 61.04% of 1 C capacity retention at −20°C, capacity retention and temperature elevation at 6 C high-rate were respectively 87.52% and 24.8°C, and capacity retention at 3 C rate was 93.81% after 1 000 cycles. |
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| Keywords: | LiFePO4 graphite power battery electrochemical performance |
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