A modified graphite anode with high initial efficiency and excellent cycle life expectation

被引：52

作者：

Wang, GP ^{[1
]}

Zhang, BL

Yue, M

Xu, XL

Qu, MZ

Yu, ZL

机构：

[1] Chinese Acad Sci, Chengdu Inst Organ Chem, Grad Sch, Chengdu 610041, Peoples R China

[2] Cent S Univ, Dept Chem Engn, Changsha 410083, Peoples R China

[3] BTR Energy Mat Co Ltd, Shenzhen 518036, Peoples R China

来源：

SOLID STATE IONICS | 2005年 / 176卷 / 9-10期

关键词：

lithium ion battery; graphite electrode; anode; surface modification; shape control;

D O I：

10.1016/j.ssi.2004.11.009

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：

A new procedure was developed to prepare surface-modified graphite. First, spherical graphite (SG) particles were prepared through milling natural flake graphite (NFG). Then, surface-modified spherical graphite (MSG) was obtained by coating SG with a nanolayer of nongraphitic carbon. The SG exhibits better electrochemical performance than NFG, since there are significant decreases in the surface area and the probability of getting graphite basal planes parallel to the copper foil. It is also demonstrated that a nanolayer of nongraphitic carbon evenly covers the surface of SG. MSG with a core-shell structure shows higher initial coulombic efficiency and better cycle stability than SG because the carbon coating layer has improved its compatibility with electrolytes and protected the graphite against exfoliation. (c) 2004 Elsevier B.V. All rights reserved.

引用

页码：905 / 909

页数：5

共 13 条

[1] Failure and stabilization mechanisms of graphite electrodes [J].

Aurbach, D ;

Levi, MD ;

Levi, E ;

Schechter, A .

JOURNAL OF PHYSICAL CHEMISTRY B, 1997, 101 (12) :2195-2206

[2] Advanced carbon anode materials for lithium ion cells [J].

Azuma, H ;

Imoto, H ;

Yamada, S ;

Sekai, K .

JOURNAL OF POWER SOURCES, 1999, 81 :1-7

[3] Lithium manganese oxide-conductive carbon nanocomposite cathodes for rechargeable lithium batteries [J].

Im, D ;

Manthiram, A .

SOLID STATE IONICS, 2003, 159 (3-4) :249-255

[4]

ISAO K, 1995, J POWER SOURCES, V54, P1

[5] Recent trends in carbon negative electrode materials [J].

Kasuh, T ;

Mabuchi, A ;

Tokumitsu, K ;

Fujimoto, H .

JOURNAL OF POWER SOURCES, 1997, 68 (01) :99-101

[6] A study of cokes used as anodic materials in lithium ion rechargeable batteries [J].

Ma, SH ;

Li, J ;

Jing, XB ;

Wang, FS .

SOLID STATE IONICS, 1996, 86-8 :911-917

[7] Anodic performance and mechanism of mesophase-pitch-derived carbons in lithium ion batteries [J].

Mochida, I ;

Ku, CH ;

Yoon, SH ;

Korai, Y .

JOURNAL OF POWER SOURCES, 1998, 75 (02) :214-222

[8] X-ray photoelectron spectroscopy analyses of lithium intercalation and alloying reactions on graphite electrodes [J].

Momose, H ;

Honbo, H ;

Takeuchi, S ;

Nishimura, K ;

Horiba, T ;

Muranaka, Y ;

Kozono, Y ;

Miyadera, H .

JOURNAL OF POWER SOURCES, 1997, 68 (02) :208-211

[9] Electrochemical performance of Ni-deposited graphite anodes for lithium secondary batteries [J].

Shi, LH ;

Wang, Q ;

Li, H ;

Wang, ZX ;

Huang, XJ ;

Chen, LQ .

JOURNAL OF POWER SOURCES, 2001, 102 (1-2) :60-67

[10] Carbon anode materials for lithium ion batteries [J].

Wu, YP ;

Rahm, E ;

Holze, R .

JOURNAL OF POWER SOURCES, 2003, 114 (02) :228-236

← 1 2 →