A novel nano structured LiFePO4/C composite as cathode for Li-ion batteries

被引：27

作者：

Zhang, Huang ^{[1
]}

Liu, Dong ^{[2
]}

Qian, Xiuzhen ^{[1
]}

Zhao, Chongjun ^{[1
]}

Xu, Yunlong ^{[1
]}

机构：

[1] E China Univ Sci & Technol, Sch Mat Sci & Engn, Shanghai Key Lab Adv Polymer Mat, Key Lab Ultrafine Mat,Minist Educ, Shanghai 200237, Peoples R China

[2] Univ Texas Arlington, Dept Mat Sci & Engn, Arlington, TX 76019 USA

来源：

JOURNAL OF POWER SOURCES | 2014年 / 249卷

关键词：

LiFePO4; Carbon aerogel; Nanowire; Cathode; High rate; HIGH-RATE CAPABILITY; ENERGY-STORAGE; LITHIUM; PERFORMANCE; SHELL;

D O I：

10.1016/j.jpowsour.2013.10.109

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 novel network LiFePO4/C composite was prepared by mixing precursor solution with carbon aerogel (CA) via a simple solution impregnation method, characterized by XRD, SEM, EDS and electrochemical analysis. The results revealed that the LiFePO4 nanowire forming on the ektexine of CA intertwined with LiFePO4/CA particles and formed a special web structure. The initial discharge capacity was improved to be 139.3 mAh g(-1), at 10 C and the capacity retention is near 100% after 50 cycles. The web structure could improve electron transport and electrochemical activity effectively. (C) 2013 Elsevier B.V. All rights reserved.

引用

页码：431 / 434

页数：4

共 29 条

[1] High-temperature storage and cycling of C-LiFePO4/graphite Li-ion cells [J].

Amine, K ;

Liu, J ;

Belharouak, I .

ELECTROCHEMISTRY COMMUNICATIONS, 2005, 7 (07) :669-673

[2]

Attard GS, 2000, MACROMOL SYMP, V156, P179, DOI 10.1002/1521-3900(200007)156:1<179::AID-MASY179>3.0.CO

[3]

2-7

[4] Energy storage beyond the horizon: Rechargeable lithium batteries [J].

Bruce, Peter G. .

SOLID STATE IONICS, 2008, 179 (21-26) :752-760

[5] Hydrothermal synthesis of lithium iron phosphate [J].

Chen, Jiajun ;

Whittingham, M. Stanley .

ELECTROCHEMISTRY COMMUNICATIONS, 2006, 8 (05) :855-858

[6] Microscale measurements of the electrical conductivity of doped LiFePO4 [J].

Chung, SY ;

Chiang, YM .

ELECTROCHEMICAL AND SOLID STATE LETTERS, 2003, 6 (12) :A278-A281

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

Chung, SY ;

Bloking, JT ;

Chiang, YM .

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

[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] Hierarchically Porous Monolithic LiFePO4/Carbon Composite Electrode Materials for High Power Lithium Ion Batteries [J].

Doherty, Cara M. ;

Caruso, Rachel A. ;

Smarsly, Bernd M. ;

Adelhelm, Philipp ;

Drummond, Calum J. .

CHEMISTRY OF MATERIALS, 2009, 21 (21) :5300-5306

[10] GROWTH OF WHISKERS IN THE SOLID PHASE [J].

FRANKS, J .

ACTA METALLURGICA, 1958, 6 (02) :103-109

← 1 2 3 →