Structural and electrochemical characterization of LiFePO4 synthesized by an HEDP-based soft-chemistry route

被引：30

作者：

Wang, Baofeng ^{[1
]}

Qiu, Yali ^{[1
]}

Yang, Li ^{[1
]}

机构：

[1] Shanghai Jiao Tong Univ, Coll Chem & Chem Engn, Shanghai 200240, Peoples R China

来源：

ELECTROCHEMISTRY COMMUNICATIONS | 2006年 / 8卷 / 11期

关键词：

LiFePO4; lithium-ion batteries; cathode material; HEDP;

D O I：

10.1016/j.elecom.2006.07.034

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

High performance LiFePO4 cathode material was synthesized by an HEDP-based soft-chemistry method, followed by calcination at 700 degrees C for 5 h in Ar. The synthesized LiFePO4 was characterized by XRD, SEM techniques. The results showed that the LiFePO4 Powder has good crystallinity and the diameter of the powder ranges form 50-300 nm. The electrochemical performance of the LiFePO4 by galvanostatic cycling studies demonstrated excellent high rate cycle stability. What noticeable is that the material has very flat voltage plateaus and the voltage difference is only about 0.3 V between the plateaus of charge and discharge even at a high rate of 10 C. This suggests excellent transport properties of the sample leading to a minimized kinetic polarization. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：1801 / 1805

页数：5

共 30 条

[11] Novel synthesis route for LiFePO4/C cathode materials for lithium-ion batteries
Liao, XZ
Ma, ZF
Wang, L
Zhang, XM
Jiang, Y
He, YS
[J]. ELECTROCHEMICAL AND SOLID STATE LETTERS, 2004, 7 (12) : A522 - A525
[12] Synthesis and performance of LiMn0.6Fe0.4PO4/nano-carbon webs composite cathode
Mi, CH
Zhang, XG
Zhao, XB
Li, HL
[J]. MATERIALS SCIENCE AND ENGINEERING B-SOLID STATE MATERIALS FOR ADVANCED TECHNOLOGY, 2006, 129 (1-3): : 8 - 13
[13] In situ synthesis and properties of carbon-coated LiFePO4 as Li-ion battery cathodes
Mi, CH
Zhao, XB
Cao, GS
Tu, JP
[J]. JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2005, 152 (03) : A483 - A487
[14] Low-cost, one-step process for synthesis of carbon-coated LiFePO4 cathode
Mi, CH
Cao, GS
Zhao, XB
[J]. MATERIALS LETTERS, 2005, 59 (01) : 127 - 130
[15] Phospho-olivines as positive-electrode materials for rechargeable lithium batteries
Padhi, AK
Nanjundaswamy, KS
Goodenough, JB
[J]. JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1997, 144 (04) : 1188 - 1194
[16] A new promising sol-gel synthesis of phospho-olivines as environmentally friendly cathode materials for Li-ion cells
Piana, M
Cushing, BL
Goodenough, JB
Penazzi, N
[J]. SOLID STATE IONICS, 2004, 175 (1-4) : 233 - 237
[17] Ravet N, 2003, NAT MATER, V2, P702, DOI 10.1038/nmat1009a
[18] Synthesis and characterization of LiFePO4 prepared by sol-gel technique
Sanchez, MAE
Brito, GES
Fantini, MCA
Goya, GF
Matos, JR
[J]. SOLID STATE IONICS, 2006, 177 (5-6) : 497 - 500
[19] Enhancement of electronic conductivity of LiFePO4 by Cr doping and its identification by first-principles calculations -: art. no. 195108
Shi, SQ
Liu, LJ
Ouyang, CY
Wang, DS
Wang, ZX
Chen, LQ
Huang, XJ
[J]. PHYSICAL REVIEW B, 2003, 68 (19)
[20] A solution-precursor synthesis of carbon-coated LiFePO4 for Li-ion cells
Spong, AD
Vitins, G
Owen, JR
[J]. JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2005, 152 (12) : A2376 - A2382

← 1 2 3 →