Hierarchically Porous Monolithic LiFePO4/Carbon Composite Electrode Materials for High Power Lithium Ion Batteries

被引：183

作者：

Doherty, Cara M. ^{[1
,2
]}

Caruso, Rachel A. ^{[2
,3
]}

Smarsly, Bernd M. ^{[4
]}

Adelhelm, Philipp ^{[5
]}

Drummond, Calum J. ^{[1
,3
]}

机构：

[1] CSIRO Mol & Hlth Technol, Clayton, Vic 3169, Australia

[2] Univ Melbourne, Sch Chem, Melbourne, Vic 3010, Australia

[3] CSIRO Mat Sci & Engn, Clayton, Vic 3169, Australia

[4] Univ Giessen, Inst Phys Chem, D-35392 Giessen, Germany

[5] Univ Utrecht, NL-3584 CA Utrecht, Netherlands

来源：

CHEMISTRY OF MATERIALS | 2009年 / 21卷 / 21期

基金：

澳大利亚研究理事会;

关键词：

ELECTROCHEMICAL PROPERTIES; CARBON MONOLITHS; PHASE-SEPARATION; SILICA RODS; STORAGE; NANOPARTICLES; REPLICATION; PERFORMANCE; ENERGY;

D O I：

10.1021/cm9024167

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 method for the preparation of hierarchically porous LiFePO4 electrode materials for lithium ion batteries has been investigated. A meso/microporous carbon monolith, a conductive framework, was prepared and infiltrated with the LiFePO4 precursors to increase the electrode/electrolyte interface and improve the rate capability of the battery. The final LiFePO4/carbon monoliths feature a meso/macroporous hierarchical structure. The monoliths we:c calcined at increasing temperatures, from 650 to 800 degrees C, to determine the structural and sintering effects on the electrochemical properties of the materials The samples were characterized using SEM, TEM, nitrogen sorption, and XRD analysis prior to electrochemical testing. The results showed that the capacity of the LiFePO4/carbon electrodes achieved 82% of the theoretical capacity at 0.1C discharge rate.

引用

页码：5300 / 5306

页数：7

共 33 条

[1]

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

[2]

2-7

[3] Fully reversible homogeneous and heterogeneous Li storage in RuO2 with high capacity [J].

Balaya, P ;

Li, H ;

Kienle, L ;

Maier, J .

ADVANCED FUNCTIONAL MATERIALS, 2003, 13 (08) :621-625

[4] 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

[5] Surfactant based sol-gel approach to nanostructured LiFePO4 for high rate Li-ion batteries [J].

Choi, Daiwon ;

Kumta, Prashant N. .

JOURNAL OF POWER SOURCES, 2007, 163 (02) :1064-1069

[6] 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

[7] Colloidal Crystal Templating to Produce Hierarchically Porous LiFePO4 Electrode Materials for High Power Lithium Ion Batteries [J].

Doherty, Cara M. ;

Caruso, Rachel A. ;

Smarsly, Bernd M. ;

Drummond, Calum J. .

CHEMISTRY OF MATERIALS, 2009, 21 (13) :2895-2903

[8]

DOHERTY CM, 2009, THESIS U MELBOURNE

[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] Synthesis of hierarchically porous carbon monoliths with highly ordered microstructure and their application in rechargeable lithium batteries with high-rate capability [J].

Hu, Yong-Sheng ;

Adelhelm, Philipp ;

Smarsly, Bernd M. ;

Hore, Sarmimala ;

Antonietti, Markus ;

Maier, Joachim .

ADVANCED FUNCTIONAL MATERIALS, 2007, 17 (12) :1873-1878

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