[1]周 慧,王 进,许 娟,等.LiFePO4/石墨烯复合材料的电化学性能比较[J].常州大学学报(自然科学版),2013,(01):76-81.[doi:10.3969/j.issn.2095-0411.2013.01.016]
　ZHOU Hui,WANG Jin,XU Juan,et al.Comparative Study of Electrochemical Performance of LiFePO4/Graphene Composites[J].Journal of Changzhou University(Natural Science Edition),2013,(01):76-81.[doi:10.3969/j.issn.2095-0411.2013.01.016]
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LiFePO4/石墨烯复合材料的电化学性能比较()
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常州大学学报(自然科学版)[ISSN:2095-0411/CN:32-1822/N]

卷:
期数:
2013年01期
页码:
76-81
栏目:
出版日期:
2013-01-01

文章信息/Info

Title:
Comparative Study of Electrochemical Performance of LiFePO4/Graphene Composites
作者:
周 慧1; 王 进1; 许 娟1; 2; 陈智栋1; 2; 曹剑瑜1; 2
1.常州大学 石油化工学院,江苏 常州 213164; 2.江苏省太阳能电池与储能技术重点实验室, 江苏 常州 213164
Author(s):
ZHOU Hui1; WANG Jin1; XU Juan1; 2; CHEN Zhi-dong1; 2; CAO Jian-yu1; 2
1.School of Petrochemical Engineering,Changzhou University,Changzhou 213164,China; 2.Key Laboratory for Solar Cells and Energy Storage Technology of Jiangsu Province,Changzhou 213164,China
关键词:
锂离子电池;  LiFePO4;  石墨烯;  固相法;  电化学容量
Keywords:
lithium-ion batteries;  lithium iron phosphate;  graphene;  solid-state method;  electrochemical capacity
分类号:
O 646
DOI:
10.3969/j.issn.2095-0411.2013.01.016
文献标志码:
A
摘要:
分别以水热合成的石墨烯(H-Gr)和商业化石墨烯(C-Gr)为载体,以溶胶-凝胶法合成的LiFePO4(S-LFP)和商业化的LiFePO4(C-LFP)为活性组分,通过固相法制备了4个LiFePO4/石墨烯复合物。采用X射线粉末衍射(XRD)、扫描电镜(SEM)和电化学性能测试,对上述LiFePO4/石墨烯复合物进行了对比研究。实验结果表明,C-LFP/H-Gr显示了最高的可逆放电容量,0.1 C倍率下,达到155.0 mA·h·g-1,其次是C-LFP/C-Gr(144.6 mA·h·g-1)和S-LFP/H-Gr(131.5 mA·h·g-1),S-LFP/C-Gr的性能最差,仅为119.6 mA·h·g-1。C-LFP/H-Gr较高的电化学容量,一方面可归结于商业化的LiFePO4较小的粒径和良好的晶型结构; 另一方面水热合成的石墨烯小的片层结构对LiFePO4的良好包覆,不仅增强了材料导电性,而且提高了活性物质LiFePO4的利用率。
Abstract:
Using hydrothermal-synthesized graphene(H-Gr)and commercial graphene(C-Gr)as the carries, respectively, four LiFePO4/Graphene composites were prepared by a solid-state method with sol-gel-synthesized LiFePO4(S-LFP)and commercial LiFePO4(C-LFP)as the active ingredient, respectively.The structures and electrochemical performances of those composites were investigated and compared by X-ray powder diffraction(XRD), scanning electron microscopy(SEM), and electrochemical measurements. The experimental results indicated that the C-LFP/H-Gr composite exhibited a highest reversible discharge-capacity of 155.0 mA·h·g-1 at 0.1 C rate, followed by C-LFP/C-Gr(144.6 mA·h·g-1)and S-LFP/H-Gr(131.5 mA·h·g-1),and S-LFP/C-Gr showed the lowest capacity of 119.6 mA·h·g-1 among four samples. The improved electrochemical capacity of the C-LFP/H-Gr composite might due to the smaller particle size and well-crystallized structure of commercial LiFePO4.On the other hand, LiFePO4 is well-coated by small nanosheets of hydrothermal-synthesized graphene, which not only enhanced the conductivityof composites, but also improved the utilization of the active ingredient.

参考文献/References:

[1]Padhi A K,Nanjundaswamy K S,Goodenough J B.Phospho-olivines as positive-electrode materials for rechargeable lithium batteries[J].Journal of the Electrochemical Society,1997,144(4):1188-1194.
[2]Chang Z R,Lv H J,Tang H G,et al.Synthesis and characterization of high-density LiFePO4/C composites as cathode materials for lithium-ion batteries[J].Electrochimica Acta,2009,54:4595-4599.
[3]Yan X D,Yang G L,Liu J,et al.An effective and simple way to synthesize LiFePO4/C composite[J].Electrochimica Acta,2009,54:5770-5774.
[4]Doherty C M,Caruso R A,Smarsly B M,et al.Hierarchically porous monolithic LiFePO4/carbon composite electrode materials for high power lithium ion batteries[J].Chemistry of Materials,2009,21:5300-5306.
[5]Chen H,Chen Y F,Gong W Q,et al.Preparation and electrochemical performance of LiFePO4/C composite with network connections of nano-carbon wires[J].Materials Letters,2011,65:559-561.
[6]王茂华,汤庆华,姚超,等.金属Ni掺杂对中间相碳微球/石墨复合材料烧结性能的影响[J].常州大学学报:自然科学版,2010,22(3):13-16.
[7]Wang G X,Needham S,Yao J,et al.A study on LiFePO4 and its doped derivatives as cathode materials for lithium-ion batteries[J].Journal of Power Sources,2006,159:282-286.
[8]Li L J,Li X H,Wang Z X,et al.Inexpensive synthesis of metal-doped LiFePO4 from laterite lixivium and its electrochemical characterization[J].Journal of Alloys and Compounds,2010,497:176-181.
[9]Xia Y,Zhang W K,Huang H,et al.Self-assembled mesoporous LiFePO4 withhierarchical Spindle-like architectures for high-performance lithium-ion batteries[J].Journal of Power Sources,2011,196:5651-5658.
[10]Zhang W J.Structure and performance of LiFePO4 cathode materials:A review[J].Journal of Power Sources,2011,196:2962-2970.
[11]徐科,申来法,米常焕,等.石墨烯掺杂LiFePO4电极材料的合成及其电化学性能[J].物理化学学报,2012,28(1):105-110.
[12]Yang J L,Wang J J,Wang D G,et al.3D porous LiFePO4/graphene hybrid cathodes with enhanced performance for Li-ion batteries[J].Journal of Power Sources,2012,208:340-344.
[13]Ding Y,Jing Y,Xu F,et al.Preparation of nano-structured LiFePO4/graphene composites by Co-precipitation method[J].Electrochemistry Communications,2010,12:10-13.
[14]Peng W X,Jiao L F,Gao H Y,et al.A novel sol-gel method based on FePO4·2H2O to synthesize submicrometer structured LiFePO4/C cathode material[J].Journal of Power Sources,2011,196: 2841-2847.
[15]Hummers W S,Offeman R E.Preparation of graphitic oxide[J].Journal of the American Chemical Society,1958,80:1339.
[16]Bi H C,Yin K B,Xie X,et al.Low temperature casting of graphene with high compressive strength[J].Advanced Materials,2012,01,519.
[17]孙孝飞,徐友龙,刘养浩,等.微米橄榄石型LiFePO4的水热合成优化[J].物理化学学报,2012, 28(12):2885-2892.
[18]Su C,Bu X D,Xu L H,et al.A novel LiFePO4/graphene/carbon composite asa performance-improved cathode material for lithium-ion batteries[J].Electrochimica Acta,2012,64:190-195.

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备注/Memo

备注/Memo:
基金项目:江苏省科技支撑计划基金(BE201113); 江苏省企业博士集聚计划基金(2011Z0062) 作者简介:周慧(1988-),女,安徽亳州人,硕士生; 通讯联系人:曹剑瑜。
更新日期/Last Update: 2013-01-01