Vanadium Substitution of LiFePO4 Cathode Materials To Enhance the Capacity of LiFePO4-Based Lithium-Ion Batteries

被引：62

作者：

Chiang, Ching-Yu ^{[1
,2
]}

Su, Hui-Chia ^{[1
]}

Wu, Pin-Jiun ^{[1
]}

Liu, Heng-Jui ^{[3
]}

Hu, Chih-Wei ^{[1
,4
]}

Sharma, Neeraj ^{[5
]}

Peterson, Vanessa K. ^{[5
]}

Hsieh, Han-Wei ^{[6
]}

Lin, Yu-Fang ^{[6
]}

Chou, Wu-Ching ^{[2
]}

Lee, Chih-Hao ^{[1
,4
]}

Lee, Jyh-Fu ^{[1
,5
]}

Shew, Bor-Yuan ^{[1
]}

机构：

[1] Natl Synchrotron Radiat Res Ctr, Hsinchu 30076, Taiwan

[2] Natl Chiao Tung Univ, Inst & Dept Electrophys, Hsinchu 30010, Taiwan

[3] Natl Tsing Hua Univ, Dept Mat Sci, Hsinchu 30013, Taiwan

[4] Natl Tsing Hua Univ, Dept Engn & Syst Sci, Hsinchu 30013, Taiwan

[5] Australian Nucl Sci & Technol Org, Kirrawee Dc, NSW 2232, Australia

[6] Adv Lithium Electrochem Co Ltd, Tao Yuan 33048, Taiwan

来源：

JOURNAL OF PHYSICAL CHEMISTRY C | 2012年 / 116卷 / 46期

关键词：

ELECTROCHEMICAL PERFORMANCE; FE;

D O I：

10.1021/jp307047w

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The mechanism of enhancing the capacity of the LiFePO4 cathodes in lithium ion batteries by the addition of a small amount of vanadium, which locate on the lithium site and induce lithium vacancies in the crystal structure, is reported in this article. As a result, the capacity increases from 138 mAh/g found for pristine LiFePO4 to 155 mAh/g for the V-added compound, and the conductivity increases from 4.75 x 10(-4) S/cm for the LiFePO4 without V addition to 1.9 x 10(-2) S/cm for the V-added compound. A possible model to facilitate the enhancement of conductivity and capacity is described with evidence supported by X-ray powder diffraction, X-ray absorption spectroscopy, and neutron powder diffraction data.

引用

页码：24424 / 24429

页数：6

共 34 条

[1] The source of first-cycle capacity loss in LiFePO4 [J].

Andersson, AS ;

Thomas, JO .

JOURNAL OF POWER SOURCES, 2001, 97-8 :498-502

[2]

Chang SH, 2012, CHINESE J PHYS, V50, P220

[3] Electronically conductive phospho-olivines as lithium storage electrodes [J].

Chung, SY ;

Bloking, JT ;

Chiang, YM .

NATURE MATERIALS, 2002, 1 (02) :123-128

[4] A novel concept for the synthesis of an improved LiFePO4 lithium battery cathode [J].

Croce, F ;

D'Epifanio, A ;

Hassoun, J ;

Deptula, A ;

Olczac, T ;

Scrosati, B .

ELECTROCHEMICAL AND SOLID STATE LETTERS, 2002, 5 (03) :A47-A50

[5] Spectroscopic studies of LixFePO4 and LixM0.03Fe0.97PO4 (M=Cr,Cu,Al,Ti) -: art. no. 024105 [J].

Gouveia, DX ;

Lemos, V ;

de Paiva, JAC ;

Souza, AG ;

Mendes, J ;

Lala, SM ;

Montoro, LA ;

Rosolen, JM .

PHYSICAL REVIEW B, 2005, 72 (02)

[6] Nano-network electronic conduction in iron and nickel olivine phosphates [J].

Herle, PS ;

Ellis, B ;

Coombs, N ;

Nazar, LF .

NATURE MATERIALS, 2004, 3 (03) :147-152

[7] Vanadium Modified LiFePO4 Cathode for Li-Ion Batteries [J].

Hong, Jian ;

Wang, C. S. ;

Chen, X. ;

Upreti, S. ;

Whittingham, M. Stanley .

ELECTROCHEMICAL AND SOLID STATE LETTERS, 2009, 12 (02) :A33-A38

[8]

KROGER FA, 1956, SOLID STATE PHYS, V3, P307

[9] Optimized chemical stability and electrochemical performance of LiFePO4 composite materials obtained by ZnO coating [J].

Leon, B. ;

Vicente, C. Perez ;

Tirado, J. L. ;

Biensan, Ph. ;

Tessier, C. .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2008, 155 (03) :A211-A216

[10] Echidna - the new high-resolution powder diffractometer being built at OPAL [J].

Liss, Klaus-Dieter ;

Hunter, Brett ;

Hagen, Mark ;

Noakes, Terrence ;

Kennedy, Shane .

PHYSICA B-CONDENSED MATTER, 2006, 385-86 :1010-1012

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