LiVOPO4/C的溶液沉积-热解法制备与表征

journal6 ›› 2010, Vol. 31 ›› Issue (6): 86-89.

LiVOPO₄/C的溶液沉积-热解法制备与表征

（1.生态旅游应用技术湖南省重点实验室，湖南吉首 416000；2.吉首大学化学化工学院，湖南吉首 416000；3.湖南省湘西州民族中学，湖南吉首 416000）

出版日期:2010-11-25 发布日期:2012-04-11
作者简介:熊利芝(1974-),女,湖南益阳人,生态旅游应用技术湖南省重点实验室讲师,博士,主要从事能源材料和催化材料研究.
基金资助:
国家自然科学基金资助项目(20873054)；国家高技术研究发展计划(863计划)重点项目子课题；湖南省教育厅科学研究项目(10A098)；生态旅游应用技术湖南省重点实验室开放基金项目(10stlvzd06)

Preparation and Characterization of LiVOPO₄/C Composite Prepared by Solution Deposition-Pyrolysis Technique

（1.Key Laboratory of Ecotourism's Application Technology,Hunan Province，Jishou 416000,Hunan China;2.College of Chemistry and Chemical Engineering,Jishou University,Jishou 416000,Hunan China;3.The National Middle School of Xiangxi,Hunan Province，Jishou 416000,Hunan China）

Online:2010-11-25 Published:2012-04-11

摘要/Abstract

摘要：以LiVOPO₄、蔗糖为原料，采用溶液沉积-热解法制备了LiVOPO₄/C复合材料。采用热重与差热分析、X-射线衍射分析、扫描电镜分析以及电化学测试等手段对LiVOPO₄/C的微观结构、表面形貌和电化学性能进行了研究.结果表明：蔗糖热分解后在LiVOPO₄颗粒的表面包覆形成了一层多孔碳；多孔碳可以有效阻止LiVOPO₄颗粒的聚集，增加电极的导电面积，降低电池极化，改善LiVOPO₄ 的电化学性能；与LiVOPO₄粉末相比，LiVOPO₄/C具有更高的可逆容量、更稳定的循环性能.

关键词： LiVOPO₄, 碳, 包覆

Abstract: LiVOPO₄/C composite was prepared by solution deposition-pyrolysis method using LiVOPO₄ and sucrose as raw materials.The microstructure,surface morphology and electrochemical properties were characterized by various electrochemical methods in combination with X-ray diffraction (XRD) and scanning electron microscope (SEM).It is found that the porous carbon layer is coated on the surface of LiVOPO₄ due to the pyrolysis of sucrose.The porous carbon can prevent the LiVOPO₄ particles from aggregation,increase the conductive area of electrode,decrease the polarization of cell and improve the electrochemical properties of LiVOPO₄ effectively.Compared with LiVOPO₄,the LiVOPO₄/C composite has increased reversible capacity,stabilized cycling performance.

Key words: LiVOPO₄, carbon, coating

熊利芝, 梁凯, 侯慧, 何则强. LiVOPO₄/C的溶液沉积-热解法制备与表征[J]. journal6, 2010, 31(6): 86-89.

XIONG Li-Zhi, LIANG Kai, HOU Hui, HE Ze-Qiang. Preparation and Characterization of LiVOPO₄/C Composite Prepared by Solution Deposition-Pyrolysis Technique[J]. journal6, 2010, 31(6): 86-89.

参考文献

[1] PADHI A K,NANJUNDASWAMY K S,GOODENOUGH J B.Phospho-Olivines as Positive-Electrode Materials for Rechargeable Lithium Batteries [J].J Electrochem Soc,1997,144 (4):1188-1 194.

[2] SHI Zhi-cong,YANG Yong.Progress in Polyanion-Type Cathode Materials for Lithium ion Batteries [J].Progress in Chemistry,2005,17(4):604-613.

[3] YANG Gai,YING Jie-rong,GAO Jian,et al.Research Progresses on Vanadium-Based Polyanion-Type Compounds Electrode Materials for lithium-Ion Batteries [J].Rare Metal Materials and Engineering,2008,37(5):936-940.

[4] ZHONG Sheng-kui,LIU Le-tong,JIANG Ji-qiong,et al.Preparation and Electrochemical Properties of Y-Doped Li3V2(PO4)3 Cathode Materials for Lithium Batteries [J].Journal of Rare Earths,2009,27 (1):134-137.

[5] TANG An-ping,WANG Xian-you,LIU Zhi-ming.Electrochemical Behavior of Li3V2(PO4)3/C Composite Cathode Material for Lithium-Ion Batteries [J].Materials Letters,2008,62(10-11):1646-1648.

[6] LI Yu-zhani,ZHOU Zhen,GAO X P,et al.A Novel Sol-Gel Method to Synthesize Nanocrystalline LiVPO4F and Its Electrochemical Li Intercalation Performances [J].Journal of Power Sources,2006,160(1):633-637.

[7] ZHOU Fu,ZHAO Xue-mei,DAHN J R.Reactivity of Charged LiVPO4F with 1 M LiPF6 EC:DEC Electrolyte at High Temperature as Studied by Accelerating Rate Calorimetry [J].Electrochemistry Communications,2009,11(3):589-591.

[8] AZMI B M,LSHIHARA T,NISHIGUCHI H,et al.Vanadyl Phosphates of VOPO4 as a Cathode of Li-Ion Rechargeable Batteries [J].Journal of Power Sources,2003,119-122:273-277.

[9] AZMI B M,ISHIHARA T,NISHIGUCHI H,et al.Cathodic Performance of VOPO4 with Various Crystal Phases for Li-Ion Rechargeable Battery [J].Electrochimica Acta,2002,48(2 ):165-170.〖ZK)〗

[10] GANBICHER J,MERCIER T L,CHAHRE Y,et al.Li/β-VOPO4:A New 4 V System for Lithium Batteries [J].J. Electrochem.Soc.,1999,146(12):4375-4379.

[11] KERR T A,GAUBICHER J,NAZAR L F.Highly Reversible Li Insertion at 4 V in ε-VOPO4/α-LiVOPO4 Cathodes [J].Electrochem. Solid State Lett.,2000,3(10):460-462.

[12] BARKER J,SAIDI M Y,SWOYER J L.Electrochemical Properties of Beta-LiVOPO4 Prepared by Carbothermal Reduction [J].J. Electrochem. Soc.,2004,151(6):A796-A800.

[13] AZMI B M,ISHIHARA T,NISHIGUCHI H,et al.LiVOPO4 as a New Cathode Materials for Li-Ion Rechargeable Battery [J].J. Power Sources,2005,146(1-2):525-528.

[14] 何则强,熊利芝,吴显明,等.新型锂离子电池正极材料LiVOPO4 的制备与表征 [J].无机化学学报,2008,24(2):303-306.

[15] XIONG Li-zhi,HE Ze-qiang.A New Rheological Phase Route to Synthesize Nano-LiVOPO4 Cathode Material for Lithium Ion Batteries [J].Acta Phys. Chim. Sin.,2010,26(3):573-577.

[16] YANG Yong,FANG Hai-sheng,ZHENG Jing,et al.Towards the Understanding of Poor Electrochemical Activity of Triclinic LiVOPO4:Experimental Characterization and Theoretical Investigations [J].Solid State Sciences,2008,10(10):1292-1298.

[17] REN M M,ZHOU Z,SU L W,et al.LiVOPO4:A Cathode Material for 4 V Lithium ion Batteries [J] Journal of Power Sources,2009,189(1):786-789.

[18] SHIN H C,CHO W I,HO J.Electrochemical Properties of Carbon-Coated LiFePO4 Cathode Using Graphite,Carbon Black,and Acetylene Black [J].Electrochimica Acta,2006,52(4):1 472-1 476.

LiVOPO₄/C的溶液沉积-热解法制备与表征

Preparation and Characterization of LiVOPO₄/C Composite Prepared by Solution Deposition-Pyrolysis Technique

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