Preparation and Electrochemical Performance of 3D Structured LiFePO4 Nanowire Arrays
CHEN Xiaoping1, MA Jun2, LI Baohua1, KANG Feiyu1
1 College of Materials Science and Engineering, Tsinghua University, Beijing 100084; 2 College of Materials Science and Engineering, Shenzhen University, Shenzhen 518060
Abstract: The LiFePO4 nanowire arrays was successfully fabricated by a sol-gel method using anodic oxide aluminum (AAO) as the template. The field emission scanning electron microscopy (FESEM) and transmission electron microscopy (TEM) images showed the synthesized LiFePO4 nanowire arrays were monodispersed and parallel to one another. The X-ray diffraction (XRD) and energy dispersive spectrometer (EDS) investigations jointly demonstrated a pure olivine structure of the synthesized LiFePO4 nanowire arrays.The LiFePO4 nanowire arrays also showed excellent electrochemical performance as cathode materials of lithium ion battery.Compared with nanoparticles prepared by the same condition,the nanowire arrays exhibited desirable rate performance (156.4 mAh/g at 0.1C and 106.9 mAh/g at 10C) and excellent cycle stability (99.1% after 100 cycles at 1C and 91.6% after 350 cycles at 10C).
1 Cui Y, Wei Q, Park H, et al. Nanowire nanosensors for highly sensitive and selective detection of biological and chemical species[J]. Science,2001,293(5533):1289. 2 Garnett E C, Cai W, Cha J J, et al. Self-limited plasmonic welding of silver nanowire junctions[J]. Nat Mater,2012,11(3):241. 3 Balasubramanian B, Das B, Skomski R, et al. Novel nanostructured rare-earth-free magnetic materials with high energy products[J]. Adv Mater,2013,25(42):6090. 4 Stella L, Zhang P, García-Vidal F J, et al. Performance of nonlocal optics when applied to plasmonic nanostructures[J]. J Phys Chem C,2013,117(17):8941. 5 Bianco A, Cheng H, Enoki T, et al. All in the graphene family-A recommended nomenclature for two-dimensional carbon materials[J]. Carbon,2013,65:1. 6 Lieb E, Mattis D. Mathematical physics in one dimension: exactly soluble models of interacting particles[M]. New York:Academic Press,2013. 7 Suryawanshi S, Warule S, Patil S, et al. Vapor-liquid-solid growth of one-dimensional tin sulfide (SnS) nanostructures with promising field emission behavior[J]. ACS Appl Mater Interfaces,2014,6(3):2018. 8 Lee M, Hong W, Jeong H, et al. Graphene oxide assisted sponta-neous growth of V2O5 nanowires at room temperature[J]. Nanoscale,2014,6(19):11066. 9 Wang B, Ostrikov K, Laan T, et al. Carbon nanorods and graphene-like nanosheets by hot filament CVD: Growth mechanisms and electron field emission[J]. J Mater Chem C,2013,1(46):7703. 10 Jian J, Shi W, Li Z, et al. Photocatalytic degradation of methyl orange using a TiO2/Ti mesh electrode with 3d nanotube arrays[J]. ACS Appl Mater Interfaces,2012,4(1):171. 11 Wang D, Zhang L, Lee W, et al. Novel three-dimensional nanoporous alumina as a template for hierarchical TiO2 nanotube arrays[J]. Small,2013,9(7):1025. 12 Ye T,Gao Y,Yin Y.Surface-enhanced Raman scattering effects of gold nanorods prepared by polycarbonate membranes[J].Acta Phys Sin,2013,62(12):127801(in Chinese). 叶通, 高云, 尹彦. 利用聚碳酸酯模板制备的金纳米棒的表面增强Raman散射效应研究[J]. 物理学报,2013,62(12):127801. 13 Favors Z, Wang W, Bay H, et al. Stable cycling of SiO2 nanotubes as high-performance anodes for lithium-ion batteries[J]. Sci Rep,2014,4:4605. 14 Liu J, Song K, van Aken P A, et al. Self-supported Li4Ti5O12-C nanotube arrays as high-rate and long-life anode materials for flexible Li-ion batteries[J]. Nano Lett,2014,14(5):2597. 15 Reddy A, Shaijumon M, Gowda S, et al. Coaxial MnO2/carbon nanotube array electrodes for high-performance lithium batteries[J]. Nano Lett,2009,9(3):1002. 16 Yao Y, Liu N, McDowell M, et al. Improving the cycling stability of silicon nanowire anodes with conducting polymer coatings[J]. Energy Environ Sci,2012,5(7):7927. 17 马俊. 纳米结构磷酸铁锂正极材料的制备及其掺杂和表面改性[D].北京:清华大学,2010. 18 Liu Y, Cao C, Li J. Enhanced electrochemical performance of carbon nanospheres LiFePO4 composite by PEG based sol-gel synthesis[J]. Electrochim Acta,2010,55(12):3921. 19 Hamid N A, Wennig S, Hardt S, et al. High-capacity cathodes for lithium-ion batteries from nanostructured LiFePO4 synthesized by highly-flexible and scalable flame spray pyrolysis[J]. J Power Sources,2012,216:76. 20 Chung S Y, Bloking J T, Chiang Y M. Electronically conductive phospho-olivines as lithium storage electrodes[J]. Nat Mater,2002,1(2):123 21 Yang J, Wang J, Wang D, et al. 3D porous LiFePO4/graphene hybrid cathodes with enhanced performance for Li-ion batteries[J]. J Power Sources,2012,208:340. 22 Liu X, Wang J, Zhang J, et al. Fabrication and characterization of LiFePO4 nanotubes by a sol-gel-AAO template process[J]. Chin J Chem Phys,2006,19(6):530. 23 Duan D H, Tian Y, Zhang Z L, et al. Preparation of LiFePO4 nanowires arrays by sol-gel template method[J]. J Synth Cryst,2012,41(1):53(in Chinese). 段东红, 田野, 张忠林, 等. 溶胶-凝胶模板法制备磷酸铁锂纳米线阵列[J]. 人工晶体学报,2012,41(1):53.
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2017, Vol. 31 
