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锂离子电池用高性能五氧化二钒
作者:耿明 赵宏滨 徐甲强 
单位:上海大学理学院 上海 200444 
关键词:五氧化二钒 微纳尺寸材料 锂离子电池 正极材料 循环稳定性 
分类号:TQ152
出版年,卷(期):页码:2011,39(7):92-96
DOI:
摘要:

在180 ℃水热条件下制备了钒氧化物,再通过煅烧前驱物VO2制备了微纳结构的五氧化二钒正极材料。通过X射线衍射、扫描电子显微镜、红外光谱等对样品的形貌、组成等进行表征。以合成的长方柱状V2O5作为锂离子电池的正极材料,测试了其充放电性能。结果表明:合成的V2O5为均匀的长方柱状结构,尺寸介于微米、纳米尺寸之间,对材料的结构和充放电循环稳定性起到重要作用;电极的初始放电比容量为222.7 mA·h/g,效率维持在98%;在电压为2.0~4.0 V的范围内,经过40次循环,其放电比容量仍然维持在215.2 mA·h/g。

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Vanadium oxides were fabricated by a surfactant-assisted hydrothermal route at 180 ℃. Vanadium pentoxides were prepared by calcining the precursor VO2. The samples were characterized by X-ray diffraction, scanning electron microscope and infrared spectroscope. The V2O5 with rectangle nanorods as the cathode material, was tested its charge/discharge performance. The results show V2O5 has uniform rectangle nanorods structure with micro-nano size beneficial to keep stable structure and good charge/discharge performance. The V2O5 nanorods exhibited a high initial discharge capacity of 222.7 mA?h/g,high energy efficiency (98%) and 215.2 mA?h/g capacity was kept after 40 cycles in the potential region 2.0-4.0 V.

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基金项目:
上海博士后基金(10R21412900),中国博士后基金(20100470677)和上海市教委重点学科项目(No.J50102)。
作者简介:
硕士
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参考文献:

[1] 高阳, 谢晓华, 解晶莹, 等. 锂离子蓄电池电解液研究进展[J]. 电源技术, 2003,27(5): 479-483. GAO Yang, XIE Xiaohua, XIE Jingying, et al. Recent development of electrolytes in lithium-ion rechargeable batteries [J]. Chin J Power Sources, 2003, 27(5): 479-483. [2] WHITTINGHAM M S. The role of ternary phases in cathode reactions[J]. J Electrochem Soc, 1976, 123: 315-320. [3] LI J M, RUI A S, Optical and structural properties of vanadium pentoxide films prepared by d.c. reactive magnetron sputtering [J]. Thin Solid Films, 2006, 515: 195-200. [4] NICOLA P, MARC W, KLAUS W, et al. Local structure of nanoscopic materials: V2O5 nanorodsand nanowires [J]. Nano Lett, 2003, 3(8): 1131-1134. [5] DMITRY A S, TATIANA L K, ALEXANDER M S, et al. Impedance spectroscopy study of lithium ion diffusion in a new cathode material based on vanadium pentoxide [J]. Mendeleev Commun, 2010, 20: 12-14. [6] FEI H L, ZHOU H J, WANG J, et al. Synthesis of hollow V2O5 microspheres and application to photocatalysis [J]. Solid State Sci, 2008, 10: 1276-1284. [7] DHAYAL R A, PAZHANIVEL T. Self assembled V2O5 nanorods for gas sensors [J]. Current Appl Phys, 2010, 10: 531-537. [8] FENG C Q, WANG S Y, ZENG R, et al. Synthesis of spherical porous vanadium pentoxide and its electrochemical properties [J]. Power Sources, 2008, 184: 485-488. [9] MOHAN V M,HU B. Synthesis, structural, and electrochemical performance of V2O5 nanotubes as cathode material for lithium battery[J]. J Appl Electrochem, 2009, 39: 2001-2006. [10] MENEZES W G, REIS D M. V2O5 nanoparticles obtained from a synthetic bariandite-like vanadium oxide: Synthesis, characterization and electrochemical behavior in an ionic liquid [J]. J Colloid and Interface Science, 2009, 337: 586-593. [11] GUERRA C D, PIQUERAS J. Structural and cathode luminescence assessment of V2O5 nanowires and nanotips grown by thermal deposition [J]. Appl Phys, 2007, 102: 084307-084314. [12] WANG Y Q, LI Z C. Synthesis and optical properties of V2O5 nanorods[J]. J Chem Phys, 2007, 126: 164701-164709. [13] JONG H K,YONG C H. Synthesis of oxide nanoparticles via microwave plasma decomposition of initial materials [J]. J Surface Coatings Technol, 2007, 201: 5114-5120. [14] CHAN C K, PENG H L, TWESTEN R D, et al. Fast, completely reversible Li insertion in vanadium pentoxide nanoribbons [J]. Nano Lett, 2007, 7(2): 490-495. [15] WANG Y, SU Q. Low temperature growth of vanadium pentoxide nanomaterials by chemical vapour deposition using VO(acac)2 as precursor [J]. J Phys D: Appl Phys, 2010, 43: 185102-185108. [16] TAKAHASHI K, STEVEN L. Synthesis and electrochemical properties of single-crystal V2O5 nanorod arrays by template-based electrodeposition [J]. J Phys Chem B, 2004, 108: 9795- 9800. [17] CHEN Y, LIU H. Preparation and electrochemical properties of submicron spherical V2O5 as cathode material for lithium ion batteries [J]. J Scripta Materialia, 2008, 59(3): 372-375. [18] CREMONESI A, BERSANI D. Synthesis and structural characterization of mesoporous V2O5 thin films for electrochromic applications [J]. Thin Solid Films, 2006, 515: 1500-1505. [19] REN X Z, JIANG Y K. Preparation and electrochemical properties of V2O5 submicron-belts synthesized by a sol-gel H2O2 route [J]. J Sol- Gel Sci Technol, 2009, 51: 133-138.

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