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材料工程  2018, Vol. 46 Issue (4): 43-50    DOI: 10.11868/j.issn.1001-4381.2017.000826
  研究论文 本期目录 | 过刊浏览 | 高级检索 |
磷酸铁锂/石墨烯复合材料的合成及电化学性能
南文争, 燕绍九, 彭思侃, 张晓艳, 刘大博, 戴圣龙
中国航发北京航空材料研究院 石墨烯及应用研究中心, 北京 100095
Synthesis and Performance of LiFePO4-C/Graphene Composite
NAN Wen-zheng, YAN Shao-jiu, PENG Si-kan, ZHANG Xiao-yan, LIU Da-bo, DAI Sheng-long
Research Center of Graphene Applications, AECC Beijing Institute of Aeronautical Materials, Beijing 100095, China
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摘要 采用研磨、超声分散与搅拌干燥的工艺方法制备磷酸铁锂/石墨烯复合材料。利用TEM,SEM,XRD和Raman对材料组织结构进行表征,并组装成扣式电池进行电化学性能测试。SEM图像表明,在该工艺所制备的磷酸铁锂/石墨烯复合材料中,石墨烯贴附在磷酸铁锂颗粒表面,并且均匀地分散在复合材料中形成良好的导电网络。电化学测试结果显示,添加2%(质量分数)石墨烯后,磷酸铁锂的倍率性能和循环性能都得到明显提高。具体表现为:倍率性能方面,在5C充放电条件下,放电比容量提高到94.2mAh·g-1,是添加前的2.53倍;循环性能方面,100次循环(1C充放电)后容量衰减由添加前的43.5%下降到添加后的9.6%。这种简便的工艺能够实现石墨烯在电极材料中的均匀分散,充分发挥石墨烯优异的导电性,进而提升磷酸铁锂正极材料电化学性能。
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南文争
燕绍九
彭思侃
张晓艳
刘大博
戴圣龙
关键词 磷酸铁锂/石墨烯复合材料电化学性能倍率性能循环性能    
Abstract:LiFePO4-C/graphene composite was successfully prepared by a facile approach of grinding, ultrasonic dispersion, stirring and drying and used as the cathode material for lithium-ion batteries.The structure and morpholgy of as-prepared LiFePO4-C/graphene composite material was characterized with transmission electron microscopy,scanning electron microscopy, X-ray diffraction and Raman spectroscopy,and the electrochemical performance was tested using coin cells assembled in an argon-filled glovebox. SEM images show that in the as-prepared material, graphene nanoflakes are adhered on the surface of LiFePO4-C particles, and uniformly dispersed in the composite material forming an effective 3D conducting network. Electrochemical tests show that after adding 2% of graphene, rate and cycling performances of the LiFePO4-C/graphene composite material are obviously improved. For the rate performance, a high reversible capacity of 94.2mAh·g-1 is achieved at 5C rate,which is more than 2.53 times higher than that of pristine LiFePO4-C; For cycling performance, the composite material shows a low capacity decay rate of 9.6% when cycles under 1C rate for 100 times,which is lower than pure LiFePO4-C (43.5%). The electrochemical performance enhancement can be mainly ascribed to the effective 3D conducting network formed by graphene nanoflakes with superior conductivity.
Key wordsLiFePO4-C/graphene composite    electrochemical performance    rate performance    cycling performance
收稿日期: 2017-06-26      出版日期: 2018-04-14
中图分类号:  TB332  
通讯作者: 燕绍九(1980-),男,高级工程师,博士,主要从事纳米材料、磁性材料及石墨烯应用研究工作,联系地址:北京市81信箱72分箱(100095),E-mail:shaojiuyan@126.com     E-mail: shaojiuyan@126.com
引用本文:   
南文争, 燕绍九, 彭思侃, 张晓艳, 刘大博, 戴圣龙. 磷酸铁锂/石墨烯复合材料的合成及电化学性能[J]. 材料工程, 2018, 46(4): 43-50.
NAN Wen-zheng, YAN Shao-jiu, PENG Si-kan, ZHANG Xiao-yan, LIU Da-bo, DAI Sheng-long. Synthesis and Performance of LiFePO4-C/Graphene Composite. Journal of Materials Engineering, 2018, 46(4): 43-50.
链接本文:  
http://jme.biam.ac.cn/CN/10.11868/j.issn.1001-4381.2017.000826      或      http://jme.biam.ac.cn/CN/Y2018/V46/I4/43
[1] PADHI A K,NANJUNDASWAMY K S,GOODENOUGH J B,et al.Phosphoolivines as positive-electrode materials for rechargeable lithium batteries[J].Journal of the Electrochemical Society,1997,144(4):1188.
[2] 王文琴,郭志猛,姜冰,等.碳热还原法制备LiFePO4/C锂电池正极材料的研究[J].稀有金属,2012,63(4):578-583. WANG W Q,GUO Z M,JIANG B,et al.Synthesis of LiFePO4/C cathode material by carbothermal reduction method[J].Chinese Journal of Rare Metals,2012,63(4):578-583.
[3] 杨文彬,张丽,刘菁伟,等.石墨烯复合材料的制备及应用研究进展[J].材料工程,2015,43(3):91-97. YANG W B,ZHANG L,LIU J W,et al.Progress in research on preparation and application of graphene composites[J].Journal of Materials Engineering,2015,43(3):91-97.
[4] KUCINSKIS G,BAJARS G,KLEPERIS J,et al.Graphene in lithium ion battery cathode materials:a review[J].Journal of Power Sources,2013,240:66-79.
[5] GENG W T,PING D H,NARA J,et al.Formation of perpendicular graphene nanosheets on LiFePO4:a first-principles characterization[J].The Journal of Physical Chemistry,2012,116:17650-17656.
[6] 云强,周园,李翔,等.石墨烯改性LiFePO4正极材料的研究进展[J].电源技术,2015,39(7):1525-1529. YUN Q,ZHOU Y,LI X,et al.Research progress on modification of LiFePO4 by graphene[J].Chinese Journal of Power Sources,2015,39(7):1525-1529.
[7] HA J,PARK S,YU S,et al.A chemically activated graphene-encapsulated LiFePO4 composite for high-performance lithium ion batteries[J].Nanoscale,2013,5:8647-8655.
[8] WANG Y,FENG Z S,CHEN J J,et al.Synthesis and electrochemical performance of LiFePO4/graphene composites by solid-state reaction[J].Mater Lett,2012,71:54-56.
[9] DING Y,JIANG Y,XU F,et al.Preparation of nano-structured LiFePO4/graphene composites by co-precipitation method[J].Electrochem Commun,2010,12:10-13.
[10] YUAN G H,BAI J T,DOAN T N L,et al.Synthesis and electrochemical properties of LiFePO4/graphene composite as a novel cathode material for rechargeable hybrid aqueous battery[J].Material Letters,2015,158:248-251.
[11] YANG J L,WANG J J,WANG D N,et al.3D porous LiFePO4/graphene hybrid cathodes with enhanced performance for Li-ion batteries[J].Journal of Power Sources,2012,208:340-344.
[12] ZHOU X F,WANG F,ZHU Y M,et al.Graphene modified LiFePO4 cathode materials for high power lithium ion batteries[J].Journal of Material Chemistry,2011,21:3353-3358.
[13] 梁广川,等.锂离子电池用磷酸铁锂正极材料[M].北京:科学出版社,2013:73. LIANG G C,et al.LiFePO4 cathode material used for Li-ion battery[M].Beijing:Science Press,2013:73.
[14] DHINDSA K S,MANDAL B P,BAZZI K,et al.Enhanced electrochemical performance of graphene modified LiFePO4 cathode material for lithium ion batteries[J].Solid State Ionic,2013,253:94-100.
[15] WANG B,WANG D L,WANG Q M,et al.Improvement of the electrochemical performance of carbon-coated LiFePO4 modified with reduced graphene oxide[J].Journal of Materials Chemistry A,2013,1:135-144.
[16] WANG L,WANG H B,LIU Z H,et al.A facile method of preparing mixed conducting LiFePO4/graphene composites for lithium-ion batteries[J].Solid State Ionics,2010,181:1685-1689.
[17] LI X L,LI T T,ZHANG Y l,et al.Graphene nanoribbon-wrapping LiFePO4 by electrostatic absorbing with improved electrochemical performance for rechargeable lithium batteries[J].Electrochimica Acta,2014,139:69-75.
[18] AMINE K,LIU J,BELHAROUAK I,et al.High-temperature storage and cycling of C-LiFePO4/graphite Li-ion cells[J].Electrochemistry Communications,2005,7:669-673.
[19] LIU H B,MIAO C,MENG Y,et al.Effect of graphene nanosheets content on the morphology and electrochemical performance of LiFePO4 particles in lithium ion batteries[J].Electrochimica Acta,2014,135:311-318.
[20] MO R W,LEI Z Y,ROONEY D,et al.Facile synthesis of nanocrystalline LiFePO4/graphene composite as cathode material for high power lithium ion batteries[J].Electrochimica Acta,2014,130:594-599.
[21] SHANG W L,KONG L Y,JI X W,et al.Synthesis,characterization and electrochemical performances of LiFePO4/graphene cathode material for high power lithium ion batteries[J].Solid State Sciences,2014,38:79-84.
[22] SU F Y,HE Y B,LI B H,et al.Could graphene construct an effective conducting network in a high-power lithium ion battery[J].Nano Energy,2012,1(3):429-439.
[23] ZHANG Y,WANG W C,LI P H,et al.A simple solvothermal route to synthesize graphene-modified LiFePO4 cathode for high power lithium ion batteries[J].Journal of Power Sources,2012,210:47-53.
[24] LONG Y,SHU Y,MA X H,et al.In-situ synthesiziing superior high-rate LiFePO4/C nanorods embedded in graphene matrix[J].Electrochimica Acta,2014,117:105-112.
[25] 吕璐,洪建和,何岗,等.石墨烯在锂离子电池正极材料中应用的进展[J].电池,2012,42(4):225-228. LV L,HONG J H,HE G,et al.Progress in application of graphene in Li-ion battery cathode materials[J].Battery,2012,42(4):225-228.
[26] FATHOLLAHI F,JAVANBAKHTM,OMIDVAR H,et al.Improved electrochemical properties of LiFePO4/graphene cathode nanocomposite prepared by one-step hydrothermal method[J].Journal of Alloys and Compounds,2015,627:146-152.
[27] TANG Y F,HUANG F Q,BI H,et al.Highly conductive three-dimensional graphene for enhancing the rate performance of LiFePO4 cathode[J].Journal of Power Sources,2012,203:130-134.
[28] LEI X L,ZHANG H Y,CHEN Y M,et al.A three-dimensional LiFePO4/carbon nanotubes/graphene composite as a cathode material for lithium-ion batteries with superior high-rate performance[J].Journal of Alloys and Compounds,2015,626:280-286.
[29] SU F Y,YOU C H,HE Y B,et al.Flexible and planar graphene conductive additives for lithium-ion batteries[J].Journal of Materials Chemistry,2010,20:9644-9650.
[30] BI H,HUANG F Q,TANG Y F,et al.Study of LiFePO4 cathode modified by graphene sheets for high-performance lithium ion batteries[J].Electrochimica Acta,2013,88:414-420.
[31] WU G,RAN R,ZHAO B,et al.3D amorphous carbon and graphene co-modified LiFePO4 composite derived from polyol process as electrode for high power lithium-ion cathode material for lithium batteries[J].Journal of Energy Chemistry,2014,23:363-375.
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