Graphene modified LiFePO4 cathode materials for high power lithium ion batteries

被引：439

作者：

Zhou, Xufeng ^{[1
]}

Wang, Feng ^{[2
]}

Zhu, Yimei ^{[2
]}

Liu, Zhaoping ^{[1
]}

机构：

[1] Chinese Acad Sci, Ningbo Inst Mat Technol & Engn NIMTE, Ningbo 315201, Zhejiang, Peoples R China

[2] Brookhaven Natl Lab, Upton, NY 11973 USA

来源：

JOURNAL OF MATERIALS CHEMISTRY | 2011年 / 21卷 / 10期

关键词：

ELECTROCHEMICAL PERFORMANCE; PHOSPHO-OLIVINES; CARBON; NANOPARTICLES; IMPACT; ENERGY; IRON; ELECTRODES; CAPACITY;

D O I：

10.1039/c0jm03287e

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：

Graphene-modified LiFePO4 composite has been developed as a Li-ion battery cathode material with excellent high-rate capability and cycling stability. The composite was prepared with LiFePO4 nanoparticles and graphene oxide nanosheets by spray-drying and annealing processes. The LiFePO4 primary nanoparticles embedded in micro-sized spherical secondary particles were wrapped homogeneously and loosely with a graphene 3D network. Such a special nanostructure facilitated electron migration throughout the secondary particles, while the presence of abundant voids between the LiFePO4 nanoparticles and graphene sheets was beneficial for Li+ diffusion. The composite cathode material could deliver a capacity of 70 mAh g(-1) at 60C discharge rate and showed a capacity decay rate of <15% when cycled under 10C charging and 20C discharging for 1000 times.

引用

页码：3353 / 3358

页数：6

共 32 条

[1] Building better batteries [J].

Armand, M. ;

Tarascon, J. -M. .

NATURE, 2008, 451 (7179) :652-657

[2] Nanomaterials for rechargeable lithium batteries [J].

Bruce, Peter G. ;

Scrosati, Bruno ;

Tarascon, Jean-Marie .

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2008, 47 (16) :2930-2946

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

Chung, SY ;

Bloking, JT ;

Chiang, YM .

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

[5] Lithium deintercalation in LiFePO4 nanoparticles via a domino-cascade model [J].

Delmas, C. ;

Maccario, M. ;

Croguennec, L. ;

Le Cras, F. ;

Weill, F. .

NATURE MATERIALS, 2008, 7 (08) :665-671

[6] Preparation of nano-structured LiFePO4/graphene composites by co-precipitation method [J].

Ding, Y. ;

Jiang, Y. ;

Xu, F. ;

Yin, J. ;

Ren, H. ;

Zhuo, Q. ;

Long, Z. ;

Zhang, P. .

ELECTROCHEMISTRY COMMUNICATIONS, 2010, 12 (01) :10-13

[7] Impact of carbon structure and morphology on the electrochemical performance of LiFePO4/C composites [J].

Doeff, Marca M. ;

Wilcox, James D. ;

Yu, Rong ;

Aumentado, Albert ;

Marcinek, Marek ;

Kostecki, Robert .

JOURNAL OF SOLID STATE ELECTROCHEMISTRY, 2008, 12 (7-8) :995-1001

[8] Optimization of carbon coatings on LiFePO4 [J].

Doeff, Marca M. ;

Wilcox, James D. ;

Kostecki, Robert ;

Lau, Grace .

JOURNAL OF POWER SOURCES, 2006, 163 (01) :180-184

[9] Impact of the carbon coating thickness on the electrochemical performance of LiFePO4/C composites [J].

Dominko, R ;

Bele, M ;

Gaberscek, M ;

Remskar, M ;

Hanzel, D ;

Pejovnik, S ;

Jamnik, J .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2005, 152 (03) :A607-A610

[10] Wired porous cathode materials:: A novel concept for synthesis of LiFePO4 [J].

Dominko, Robert ;

Bele, Marjan ;

Goupil, Jean-Michel ;

Gaberscek, Miran ;

Hanzel, Darko ;

Arcon, Iztok ;

Jamnik, Janez .

CHEMISTRY OF MATERIALS, 2007, 19 (12) :2960-2969

← 1 2 3 4 →