Impact of glucose on the electrochemical performance of nano-LiCoPO4 cathode for Li-ion batteries

被引：12

作者：

Kim, E. J. ^{[1
]}

Xu, H. Y. ^{[1
]}

Lim, J. S. ^{[1
]}

Kang, J. W. ^{[1
]}

Gim, J. H. ^{[1
]}

Mathew, Vinod ^{[1
]}

Kim, Jaekook ^{[1
]}

机构：

[1] Chonnam Natl Univ, Dept Mat Sci & Engn, Kwangju 500757, South Korea

来源：

JOURNAL OF SOLID STATE ELECTROCHEMISTRY | 2012年 / 16卷 / 01期

关键词：

Sol-gel processes; Nanoparticles; Cathode; LiCoPO4; Li-ion batteries; LIFEPO4/C; LICOPO4; CARBON; FE; CONDUCTIVITY; COMPOSITES; ELECTRODES; DENSITY; ENERGY; ROUTE;

D O I：

10.1007/s10008-011-1291-1

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

LiCoPO4 nanoparticles were synthesized by standard and glucose-assisted sol-gel methods for use as cathodes in lithium-ion batteries. The effect of glucose on the characteristics of the formed LiCoPO4 nanoparticles was investigated by TGA, XRD, and FESEM. The TGA results indicated gradual decomposition of glucose in the temperature range 400-700 A degrees C. The XRD results showed olivine phases in addition to small traces of Co3O4 for samples calcined at 400 A degrees C while pure olivine phases were confirmed for the 700 A degrees C calcined samples. The addition of glucose strongly suggests promotion of LiCoPO4 crystallization, as revealed by FESEM studies. The electrochemical measurements pertaining to LiCoPO4 samples calcined at 400 A degrees C suggested an enhancement of initial discharge capacity from 103.3 to 144.6 mAh/g for the standard and glucose-based electrodes, respectively. Further, the effects of conductive additive and excess lithium on the electrochemical performance of LiCoPO4 have also been investigated.

引用

页码：149 / 155

页数：7

共 29 条

[1] Olivine LiCoPO4 as 4.8 V electrode material for lithium batteries [J].

Amine, K ;

Yasuda, H ;

Yamachi, M .

ELECTROCHEMICAL AND SOLID STATE LETTERS, 2000, 3 (04) :178-179

[2] Electrochemical and structural study of LiCoPO4-based electrodes [J].

Bramnik, NN ;

Bramnik, KG ;

Buhrmester, T ;

Baehtz, C ;

Ehrenberg, H ;

Fuess, H .

JOURNAL OF SOLID STATE ELECTROCHEMISTRY, 2004, 8 (08) :558-564

[3] Reducing carbon in LiFePO4/C composite electrodes to maximize specific energy, volumetric energy, and tap density [J].

Chen, ZH ;

Dahn, JR .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2002, 149 (09) :A1184-A1189

[4] Effect of particle size on LiMnPO4 cathodes [J].

Drezen, Thierry ;

Kwon, Nam-Hee ;

Bowen, Paul ;

Teerlinck, Ivo ;

Isono, Motoshi ;

Exnar, Ivan .

JOURNAL OF POWER SOURCES, 2007, 174 (02) :949-953

[5] Morphological characterization of LiFePO4/C Composite cathode materials synthesized via a carboxylic acid route [J].

Fey, George Ting-Kuo ;

Lu, Tung-Lin .

JOURNAL OF POWER SOURCES, 2008, 178 (02) :807-814

[6] Combined First-Principle Calculations and Experimental Study on Multi-Component Olivine Cathode for Lithium Rechargeable Batteries [J].

Gwon, Hyeokjo ;

Seo, Dong-Hwa ;

Kim, Sung-Wook ;

Kim, Jongsoon ;

Kang, Kisuk .

ADVANCED FUNCTIONAL MATERIALS, 2009, 19 (20) :3285-3292

[7] Effects of Fe doping on the electrochemical performance of LiCoPO4/C composites for high power-density cathode materials [J].

Han, Dong-Wook ;

Kang, Yong-Mook ;

Yin, Ri-Zhu ;

Song, Min-Sang ;

Kwon, Hyuk-Sang .

ELECTROCHEMISTRY COMMUNICATIONS, 2009, 11 (01) :137-140

[8]

Idalia B, 2009, J MATER CHEM, V19, P5125

[9] Preparation of LiCoPO4 and LiFePO4 coated LiCoPO4 materials with improved battery performance [J].

Jang, I. C. ;

Lim, H. H. ;

Lee, S. B. ;

Karthikeyan, K. ;

Aravindan, V. ;

Kang, K. S. ;

Yoon, W. S. ;

Cho, W. I. ;

Lee, Y. S. .

JOURNAL OF ALLOYS AND COMPOUNDS, 2010, 497 (1-2) :321-324

[10] Electrochemical properties of LiFePO4-multiwalled carbon nanotubes composite cathode materials for lithium polymer battery [J].

Jin, Bo ;

Jin, En Mei ;

Park, Kyung-Hee ;

Gu, Hal-Bon .

ELECTROCHEMISTRY COMMUNICATIONS, 2008, 10 (10) :1537-1540

← 1 2 3 →