Synthesis of Sub-micrometer Lithium Iron Phosphate Particles Using
Supercritical Hydrothermal Method for Lithium Ion Batteries

doi:10.1007/s12204-012-1317-6

Journal of shanghai Jiaotong University (Science) ›› 2012, Vol. 17 ›› Issue (5): 517-522.doi: 10.1007/s12204-012-1317-6

• Articles • Previous Articles Next Articles

Synthesis of Sub-micrometer Lithium Iron Phosphate Particles Using Supercritical Hydrothermal Method for Lithium Ion Batteries

LIU Xue-wu1,2*(刘学武), WEI Hao1 (魏浩), DENG Yuan-fu2 (邓远富), TANG Jie1 (汤洁), SHI Zhi-cong2 (施志聪), CHEN Guo-hua2,3 (陈国华)

(1. School of Chemical Machinery, Dalian University of Technology, Dalian 116024, Liaoning, China; 2. Center for Green Products and Processing Technologies, Guangzhou HKUST Fok Ying Tung Research Institute, Guangzhou 511458, China; 3. Department of Chemical and Biomolecular Engineering, The Hong Kong University of Science and Technology, Hong Kong, China)
(1. School of Chemical Machinery, Dalian University of Technology, Dalian 116024, Liaoning, China; 2. Center for Green Products and Processing Technologies, Guangzhou HKUST Fok Ying Tung Research Institute, Guangzhou 511458, China; 3. Department of Chemical and Biomolecular Engineering, The Hong Kong University of Science and Technology, Hong Kong, China)

Online:2012-10-30 Published:2012-11-16
Contact: LIU Xue-wu1,2*(刘学武) E-mail:liuxuewu@dlut.edu.cn

Abstract

Abstract: In this study, sub-micrometer LiFePO4 particles with high purity and crystallinity were synthesized using supercritical hydrothermal method as the cathode material for lithium ion batteries. Experimental results show that templates and calcination time have significant impacts on the purity, particle size and morphology of LiFePO4 particles. The as-prepared LiFePO4 particles using polyvinyl pyrrolidone (PVP) template with additional one hour calcination at 700℃ exhibit characteristics of good crystallinity, uniform size distribution, high capacity and cycling performance. The specific discharge capacities of 141.2 and 114.0mA· h/g were obtained at the charge/discharge rates of 0.1 and 1.0 C, respectively. It retained 96.0% of an initial capacity after 100 cycles at 1.0 C rate. The good electrochemical performance of the as-synthesized material is attributed to the synergistic factors of its reasonable particle size and surface areas and high crystallinity.

Key words: LiFePO4| sub-micrometer| supercritical hydrothermal synthesis| template

摘要： In this study, sub-micrometer LiFePO4 particles with high purity and crystallinity were synthesized using supercritical hydrothermal method as the cathode material for lithium ion batteries. Experimental results show that templates and calcination time have significant impacts on the purity, particle size and morphology of LiFePO4 particles. The as-prepared LiFePO4 particles using polyvinyl pyrrolidone (PVP) template with additional one hour calcination at 700℃ exhibit characteristics of good crystallinity, uniform size distribution, high capacity and cycling performance. The specific discharge capacities of 141.2 and 114.0mA· h/g were obtained at the charge/discharge rates of 0.1 and 1.0 C, respectively. It retained 96.0% of an initial capacity after 100 cycles at 1.0 C rate. The good electrochemical performance of the as-synthesized material is attributed to the synergistic factors of its reasonable particle size and surface areas and high crystallinity.

关键词: LiFePO4| sub-micrometer| supercritical hydrothermal synthesis| template

CLC Number:

TM 911

LIU Xue-wu1,2*(刘学武), WEI Hao1 (魏浩), DENG Yuan-fu2 (邓远富), TANG Jie1 (汤洁), SHI Zhi-cong2 (施志聪), CHEN Guo-hua2,3 (陈国华). Synthesis of Sub-micrometer Lithium Iron Phosphate Particles Using Supercritical Hydrothermal Method for Lithium Ion Batteries[J]. Journal of shanghai Jiaotong University (Science), 2012, 17(5): 517-522.

References

[1] Padhi A K, Nanjundaswamy K S, Goodenough J B. Phospho-olivines as positive-electrode materials for rechargeable lithium batteries [J]. Journal of The Electrochemical Society, 1997, 144(4): 1188-1194.
[2] Aimable A, Aymes D, Bernard F, et al. Characteristics of LiFePO4 obtained through a one step continuous hydrothermal synthesis process working in supercritical water [J]. Solid State Ionics, 2009, 180: 861-866.
[3] Chung S Y, Bloking J T, Chiang Y M. Electronically conductive phospho-olivines as lithium storage electrodes [J]. Nature Materials, 2002, 1(2): 123-128.

[4] Prosini P P, Lisi M, Zane D, et al. Determination of the chemical diffusion coefficient of lithium in LiFePO4 [J]. Solid State Ionics, 2002, 148(1-2): 45-51.
[5] Yamada A, Chung S C, Hinokuma K. Optimized LiFePO4 for lithium battery cathodes [J]. Journal of The Electrochemical Society, 2001, 148: A224-A229.
[6] Takahashi M, Tobishima S, Takei K, et al. Characterization of LiFePO4 as the cathode material for rechargeable lithium batteries [J]. Journal of Power Sources, 2001, 97-98: 508-511.
[7] Prosini P P, Carewska M, Scaccia S, et al. A new synthetic route for preparing LiFePO4 with enhanced electrochemical performance [J]. Journal of The Electrochemical Society, 2002, 149: A886-A890.
[8] Arnold G, Garche J, Hemmer R, et al. Fineparticle lithium iron phosphate LiFePO4 synthesized by a new low-cost aqueous precipitation technique [J]. Journal of Power Sources, 2003, 119-121: 247-251.
[9] Oh S W, Myung S T, Bang H J, et al. Nanoporous structured LiFePO4 with spherical microscale particles having high volumetric capacity for lithium batteries [J]. Electrochemical and Solid-State Letters, 2009,12(9): A181-A185.
[10] Wang G X, Bewlay S, Yao J, et al. Characterization of LiMxFe1xPO4 (M = Mg, Zr, Ti) cathode materials prepared by the sol-gel method [J]. Electrochemical and Solid-State Letters, 2004, 7(12): A503-A506.
[11] Adschiri T, Hakuta Y, Sue K, et al. Hydrothermal synthesis of metal oxide nanoparticles at supercritical conditions [J]. Journal of Nanoparticle Research, 2001, 3: 227-235.
[12] Lee J, Teja A S. Characteristics of lithium iron phosphate (LiFePO4) particles synthesized in subcritical and supercritical water [J]. Journal of Supercritical Fluids, 2005, 35: 83-90.
[13] Hong S A, Kim S J, Kim J, et al. Small capacity decay of lithium iron phosphate (LiFePO4) synthesized continuously in supercritical water: Comparison with solid-state method [J]. Journal of Supercritical Fluids, 2011, 55: 1027-1037.
[14] Doherty C M, Caruso R A, Smarsly B M, et al.Colloidal crystal templating to produce hierarchically porous LiFePO4 electrode materials for high power lithium ion batteries [J]. Chemistry of Materials, 2009, 21: 2895-2903.

Synthesis of Sub-micrometer Lithium Iron Phosphate Particles Using Supercritical Hydrothermal Method for Lithium Ion Batteries

Synthesis of Sub-micrometer Lithium Iron Phosphate Particles Using Supercritical Hydrothermal Method for Lithium Ion Batteries

Knowledge

Abstract

Cite this article

share this article

References

Related Articles 6

Recommended Articles

Metrics

Comments

[1]	QU Yang (曲扬), YAN Mengning (严孟宁), LI Xiaomin (李小敏), WU Bing (吴兵), LIU Siyu (柳思宇), WANG Liao (王燎), WU Wen(武文), AI Songtao(艾松涛). Image Registration Technique for Assessing the Accuracy of Intraoperative Osteotomy for Pelvic Tumors by 3D-Printed Patient-Specific Templates [J]. J Shanghai Jiaotong Univ Sci, 2021, 26(3): 306-311.
[2]	SUN Xiaojiang (孙晓江), YANG Erzhu (杨二柱), ZHAO Changqing (赵长清), CHENG Xiaofei (程晓非), ZHANG Kai (张凯), TIAN Haijun (田海军), DING Baozhi (丁宝志), LI Hua (李华), JIANG Wenbo (姜闻博), DAI Kerong(戴尅戎), ZHAO Jie(赵杰). Progress in the Application of 3D Printing Technology in Spine Surgery [J]. J Shanghai Jiaotong Univ Sci, 2021, 26(3): 352-360.
[3]	SUN Ling (孙玲). A Real-Time Collision-Free Path Planning of a Rust Removal Robot Using an Improved Neural Network [J]. Journal of shanghai Jiaotong University (Science), 2017, 22(5): 633-640.
[4]	MIN Yongzhi1,XIAO Benyu1,DANG Jianwu1,YIN Chao1,YUE Biao1,MA Hongfeng2. Machine Vision Rapid Detection Method of the Track Fasteners Missing [J]. Journal of Shanghai Jiaotong University, 2017, 51(10): 1268-1272.
[5]	WU Zhi-Wei, ZHANG Jian-Long, WU Hong-Jie, YIN Cheng-Liang. Efficiency Analysis of Hybrid Energy Storage System in Light Electric Vehicles [J]. Journal of Shanghai Jiaotong University, 2012, 46(08): 1304-1309.
[6]	QIAN Huijia^a,YANG Ming^a,LI Hao^a,WANG Chun xiang^b. A Pedestrian Detection Method Based on Laser Scanner and Camera [J]. Journal of Shanghai Jiaotong University, 2010, 44(07): 946-0950.