Control of AlPO4-nanoparticle coating on LiCoO2 by using water or ethanol

被引：37

作者：

Cho, J ^{[1
]}

Lee, JG

Kim, B

Kim, TG

Kim, J

Park, B

机构：

[1] Kumoh Natl Inst Technol, Dept Appl Chem, Gumi, South Korea

[2] Seoul Natl Univ, Sch Mat Sci & Engn, Seoul, South Korea

[3] Seoul Natl Univ, Res Ctr Energy Convers & Storage, Seoul, South Korea

来源：

ELECTROCHIMICA ACTA | 2005年 / 50卷 / 20期

关键词：

AlPO4; nanoparticle; coating; crystallinity; Co dissolution; Li diffusivity;

D O I：

10.1016/j.electacta.2005.01.039

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

The electrochemical properties of AlPO4-coated LiCoO2 cathodes prepared in a water or ethanol solvent were characterized with the view of stabilizing LiCoO2 at charge-cutoff voltages of 4.6 and 4.8 V. Under the influence of the AlPO4 crystallinity, the coated LiCoO2 prepared in ethanol had better capacity retention than those prepared in water. This enhancement also correlated with the improved suppression of Li-diffusivity decay in the coated cathode from the ethanol compared to that from water. In addition, the differential scanning calorimetry (DSC) results of the AlPO4 nanoparticle-coated LiCoO2 with ethanol showed an enhanced thermal stability. (c) 2005 Elsevier Ltd. All fights reserved.

引用

页码：4182 / 4187

页数：6

共 53 条

[1] On the capacity fading of LiCoO2 intercalation electrodes:: the effect of cycling, storage, temperature, and surface film forming additives [J].

Aurbach, D ;

Markovsky, B ;

Rodkin, A ;

Levi, E ;

Cohen, YS ;

Kim, HJ ;

Schmidt, M .

ELECTROCHIMICA ACTA, 2002, 47 (27) :4291-4306

[2] On safety of lithium-ion cells [J].

Biensan, P ;

Simon, B ;

Pérès, JP ;

de Guibert, A ;

Broussely, M ;

Bodet, JM ;

Perton, F .

JOURNAL OF POWER SOURCES, 1999, 81 :906-912

[3]

BOND GC, 1997, CATAL TODAY, V36, P153

[4] SYNTHESIS OF THIOL-DERIVATIZED GOLD NANOPARTICLES IN A 2-PHASE LIQUID-LIQUID SYSTEM [J].

BRUST, M ;

WALKER, M ;

BETHELL, D ;

SCHIFFRIN, DJ ;

WHYMAN, R .

JOURNAL OF THE CHEMICAL SOCIETY-CHEMICAL COMMUNICATIONS, 1994, (07) :801-802

[5]

Caruso F, 2001, ADV MATER, V13, P11, DOI 10.1002/1521-4095(200101)13:1<11::AID-ADMA11>3.0.CO

[6]

2-N

[7]

Cassagneau T, 2002, ADV MATER, V14, P732, DOI 10.1002/1521-4095(20020517)14:10<732::AID-ADMA732>3.0.CO

[8]

2-P

[9] Methods to obtain excellent capacity retention in LiCoO2 cycled to 4.5 V [J].

Chen, ZH ;

Dahn, JR .

ELECTROCHIMICA ACTA, 2004, 49 (07) :1079-1090

[10] A breakthrough in the safety of lithium secondary batteries by coating the cathode material with AIPO4 nanoparticles [J].

Cho, J ;

Kim, YW ;

Kim, B ;

Lee, JG ;

Park, B .

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2003, 42 (14) :1618-1621

← 1 2 3 4 5 6 →