Coating technique for improvement of the cycling stability of LiCo/NiO2 electrode materials

被引：12

作者：

Zhecheva, E. ^{[1
]}

Mladenov, Ml

Stoyanova, R.

Vassilev, S.

机构：

[1] Bulgarian Acad Sci, Inst Gen & Inorgan Chem, BU-1113 Sofia, Bulgaria

[2] Bulgarian Acad Sci, Inst Electrochem & Energy Syst, BU-1113 Sofia, Bulgaria

来源：

JOURNAL OF POWER SOURCES | 2006年 / 162卷 / 02期

关键词：

coating technique; cathode materials; structural characterisation; lithium ion batteries; cycling stability;

D O I：

10.1016/j.jpowsour.2005.07.063

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：

We provide data on the changes in structure and composition of commercial LiNi0.8CO0.2O2 electrode materials for lithium-ion batteries occurring after surface coating with two types of metal oxides: electrochemically active LiCoO2 and inactive MgO. XRD analysis, SEM images, IR spectroscopy and EPR of low-spin Ni3+ ions were carried out for structural characterisation of coated LiNi0.8CO0.2O2 electrodes. Surface modification with LiCoO2 was found to be a more effective route for improving the cycling stability of LiNi0.8Co0.2O2. The favourable effect of LiCoO2-coating was connected with an enhanced stability of the bulk composition and reduction of electrode/electrolyte interaction. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：823 / 828

页数：6

共 24 条

[1] The study of surface phenomena related to electrochemical lithium intercalation into LixMOy host materials (M = Ni, Mn) [J].

Aurbach, D ;

Gamolsky, K ;

Markovsky, B ;

Salitra, G ;

Gofer, Y ;

Heider, U ;

Oesten, R ;

Schmidt, M .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2000, 147 (04) :1322-1331

[2] Improving the capacity retention of LiCoO2 cycled to 4.5 V by heat-treatment [J].

Chen, ZH ;

Dahn, JR .

ELECTROCHEMICAL AND SOLID STATE LETTERS, 2004, 7 (01) :A11-A14

[3]

Cho J, 2000, ELECTROCHEM SOLID ST, V3, P362

[4] LiCoO2 cathode material that does not show a phase transition from hexagonal to monoclinic phase [J].

Cho, J ;

Kim, YJ ;

Park, B .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2001, 148 (10) :A1110-A1115

[5] Novel LiCoO2 cathode material with Al2O3 coating for a Li ion cell [J].

Cho, J ;

Kim, YJ ;

Park, B .

CHEMISTRY OF MATERIALS, 2000, 12 (12) :3788-3791

[6] Enhancement of thermal stability of LiCoO2 by LiMn2O4 coating [J].

Cho, JP ;

Kim, G .

ELECTROCHEMICAL AND SOLID STATE LETTERS, 1999, 2 (06) :253-255

[7] Direct micron-sized LiMn2O4 particle coating on LiCoO2 cathode material using surfactant [J].

Cho, JP .

SOLID STATE IONICS, 2003, 160 (3-4) :241-245

[8] Two-phase LiCoO2 oxides for rechargeable lithium batteries [J].

Choblet, A ;

Shiao, HC ;

Lin, HP ;

Salomon, M ;

Manivannan, V .

ELECTROCHEMICAL AND SOLID STATE LETTERS, 2001, 4 (06) :A65-A67

[9] Microvoltammetry for cathode materials at elevated temperatures: electrochemical stability of single particles [J].

Dokko, K ;

Horikoshi, S ;

Itoh, T ;

Nishizawa, M ;

Mohamedi, M ;

Uchida, I .

JOURNAL OF POWER SOURCES, 2000, 90 (01) :109-115

[10] A study of the Li/Li+ couple in DMC and PC solvents -: Part 1:: Characterization of LiAsF6/DMC and LiAsF6/PC solutions [J].

Doucey, L ;

Revault, M ;

Lautié, A ;

Chaussé, A ;

Messina, R .

ELECTROCHIMICA ACTA, 1999, 44 (14) :2371-2377

← 1 2 3 →