The Preparation and Characterization of LiFe0.98Ni0.01Nb0.01PO4/C by Carbon Reduction Route

Abstract:

Article Preview

The LiFe0.98Ni0.01Nb0.01PO4/C was synthesized by carbon reduction route using FePO4•2H2O as precursor. The LiFe0.98Ni0.01Nb0.01PO4/C sample was characterized by X-ray diffraction (XRD), scanning electron microscope (SEM) and electrochemical measurements. The XRD analysis, SEM and TEM images show that sample has the good crystal structure, morphology and carbon coating. The charge-discharge tests demonstrate that the powder has the better electrochemical properties, with an initial discharge capacity of 164.6 mAh•g−1 at current density of 0.1 C. The capacity retention reaches 99.8% after 100 cycles at 0.1C.

Info:

Periodical:

Advanced Materials Research (Volumes 581-582)

Edited by:

Jimmy (C.M.) Kao, Wen-Pei Sung and Ran Chen

Pages:

570-573

Citation:

J. F. Zhang et al., "The Preparation and Characterization of LiFe0.98Ni0.01Nb0.01PO4/C by Carbon Reduction Route", Advanced Materials Research, Vols. 581-582, pp. 570-573, 2012

Online since:

October 2012

Export:

Price:

$38.00

[1] Bhuvaneswari M S, Bramnik N N, Ensling D, et al. Synthesis and characterization of Carbon Nano Fiber/LiFePO4 composites for Li-ion batteries[J], Journal of Power Sources, 2008, 180(1): 553-560.

DOI: https://doi.org/10.1016/j.jpowsour.2008.01.090

[2] YU Ze-min, ZHAO Lian-cheng. Structure and electrochemical properties of LiMn2O4[J]. Transactions of Nonferrous Metals Society of China, 2007, 17(3): 659-664.

DOI: https://doi.org/10.1016/s1003-6326(07)60152-6

[3] Dominko R, Bele M, Gaberscek M, et al. Structure and electrochemical performance of Li2MnSiO4 and Li2FeSiO4 as potential Li-battery cathode materials [J]. Electrochemistry Communications, 2006, 8(2): 217-222.

DOI: https://doi.org/10.1016/j.elecom.2005.11.010

[4] Yan X, Yang G, Liu J, et al. An effective and simple way to synthesize LiFePO4/C composite[J]. Electrochimica Acta, 2009, 54: 5770-5774.

DOI: https://doi.org/10.1016/j.electacta.2009.05.048

[5] Deniard P, Dulac A M, Rocquefelte X, et al. High potential positive materials for lithium-ion batteries: transition metal phosphates[J]. Journal of Physics and Chemistry of Solids, 2004, 65: 229-233.

DOI: https://doi.org/10.1016/j.jpcs.2003.10.019

[6] Chung S Y, Bloking J T, Chiang Y M. Electronically conductive phosphor-olivines as lithium storage eletrodes[J]. Nature Materials, 2002, 1(2): 123-128.

DOI: https://doi.org/10.1038/nmat732

[7] Ou X Q, Liang G C, Li W, et al. Effects of magne-sium doping on electronic conductivity and electro-chemical properties of LiFePO4 prepared via hydrothermal route[J]. Journal of Power Sources, 2008, 184: 543-547.

DOI: https://doi.org/10.1016/j.jpowsour.2008.02.077

[8] Goodenough J B, Kim Y. Challenges for Rechargeable Li Batteries[J], Chem. Mater. 2010, 22(3): 587-603.

[9] Yang G, Ni H, Liu H D, et al. The doping effect on the crystal structure and electrochemical properties of LiMnxM1-xPO4 (M= Mg, V, Fe, Co, Gd)[J]. Journal of Power Sources, 2011, 196: 4747-4755.

[10] Zhang B, Li X H, Luo W B, et al. Electrochemical properties of LiFe1−xMgxPO4 for cathode materials of lithium ion batteries[J]. Journal of Central South University(Science and Technology), 2006, 37(6): 1094-1097. (In Chinese).

[11] Akira K, Shinya S, Masaru M. High-rate properties of LiFePO4/carbon composites as cathode materials for lithium-ion batteries[J]. Ceramics International. 2008, 34(4): 863-866.

DOI: https://doi.org/10.1016/j.ceramint.2007.09.037

[12] Lin Y, Gao M X, Zhu D, et al. Effects of carbon coating and iron phosphides on the electrochemical proper-ties of LiFePO4/C[J]. J. Power Sources, 2008, 184: 444-448.

[13] Jin Y, Yang C P, Ru X H, et al. V2O3 modified LiFePO4/C composite with improved electrochemical performance[J], Journal of Power Sources, 2011, 196: 5623-5630.

DOI: https://doi.org/10.1016/j.jpowsour.2011.02.059

[14] Yin Y H, Gao M X, Pan, H G, et al. High-rate capability of LiFePO4 cathode materials containing Fe2P and trace carbon[J], Journal of Power Sources, 2012, 199: 256-262.

DOI: https://doi.org/10.1016/j.jpowsour.2011.10.042

[15] Delacourt C, Poizot P, Levasseur S, et al. Size effects on carbon-free LiFePO4 powders[J], Electrochem. Solid-State Lett. 2006, 9: A352−A355.

DOI: https://doi.org/10.1149/1.2201987

[16] Liu X, Zhao Z. Synthesis of LiFePO4/C by solid-liquid reaction milling method[J]. Powder Technology, 2010, 197(3): 309-313.

DOI: https://doi.org/10.1016/j.powtec.2009.09.019