Template-free synthesis of porous-LiFePO4/C nanocomposite for high power lithium-ion batteries

被引：20

作者：

Du, Jing ^{[1
]}

Kong, Ling-Bin ^{[1
,2
]}

Liu, Hong ^{[1
]}

Liu, Jin-Bei ^{[1
]}

Liu, Mao-Cheng ^{[1
]}

Zhang, Peng ^{[1
]}

Luo, Yong-Chun ^{[2
]}

Kang, Long ^{[2
]}

机构：

[1] Lanzhou Univ Technol, State Key Lab Adv Proc & Recycling Nonferrous Met, Lanzhou 730050, Peoples R China

[2] Lanzhou Univ Technol, Sch Mat Sci & Engn, Lanzhou 730050, Peoples R China

来源：

ELECTROCHIMICA ACTA | 2014年 / 123卷

基金：

中国国家自然科学基金;

关键词：

Mesoporous LiFePO4/C; Template-free; High rate capability; LIFEPO4 ELECTRODE MATERIALS; CATHODE MATERIALS; MESOPOROUS LIFEPO4/C; POSITIVE-ELECTRODE; PHOSPHO-OLIVINES; PERFORMANCE; CARBON; COMPOSITE; POLYMER; IRON;

D O I：

10.1016/j.electacta.2013.12.157

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

LiFePO4 electrode material with large specific surface area and porous structure can achieve high energy and power capabilities, but current synthesis method is relatively complicated. Here, we report a facile synthesis of porous-LiFePO4/C (porous-LFP/C) nanocomposites, which require no templates or surfactants. The synthesized porous-LFP/C material possesses outstanding morphology with nano-sized, spherical particles, a desirable core-shell structure with uniform carbon film on the surface of LiFePO4 and with a specific surface area of 29.9 m(2) g(-1). The as-obtained porous-LFP/C nanocomposites show excellent rate capability and cycling stability. It delivers a discharge capacity of 143 and 126 mAh g(-1) at 5 C and 10 C rates, respectively, and exhibits desirable capacity retention after 500 cycles. Remarkably, it performed well even at 30 C (83 mAh g(-1)) with the 91% of initial capacity after 1000 cycles. (C) 2014 Elsevier Ltd. All rights reserved.

引用

页码：1 / 6

页数：6

共 40 条

[1] Generation of hierarchical meso- and macroporous carbon from mesophase pitch by spinodal decomposition using polymer templates [J].

Adelhelm, Philipp ;

Hu, Yong-Sheng ;

Chuenchom, Laemthong ;

Antonietti, Markus ;

Smarsly, Bernd M. ;

Maier, Joachim .

ADVANCED MATERIALS, 2007, 19 (22) :4012-+

[2] Nanostructured materials for advanced energy conversion and storage devices [J].

Aricò, AS ;

Bruce, P ;

Scrosati, B ;

Tarascon, JM ;

Van Schalkwijk, W .

NATURE MATERIALS, 2005, 4 (05) :366-377

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

Bruce, Peter G. ;

Scrosati, Bruno ;

Tarascon, Jean-Marie .

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

[4] Template-directed materials for rechargeable lithium-ion batteries [J].

Cheng, Fangyi ;

Tao, Zhanliang ;

Liang, Jing ;

Chen, Jun .

CHEMISTRY OF MATERIALS, 2008, 20 (03) :667-681

[5] Carbon-coated Li4Ti5O12 as a high rate electrode material for Li-ion intercalation [J].

Cheng, Liang ;

Li, Xi-Li ;

Liu, Hai-Jing ;

Xiong, Huan-Ming ;

Zhang, Ping-Wei ;

Xia, Yong-Yao .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2007, 154 (07) :A692-A697

[6] Defect-free solvothermally assisted synthesis of microspherical mesoporous LiFePO4/C [J].

Cho, Min-Young ;

Kim, Kwang-Bum ;

Lee, Jae-Won ;

Kim, Haegyeom ;

Kim, Hyungsub ;

Kang, Kisuk ;

Roh, Kwang Chul .

RSC ADVANCES, 2013, 3 (10) :3421-3427

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

Chung, SY ;

Bloking, JT ;

Chiang, YM .

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

[8] High performance LiFePO4 electrode materials: influence of colloidal particle morphology and porosity on lithium-ion battery power capability [J].

Doherty, Cara M. ;

Caruso, Rachel A. ;

Drummond, Calum J. .

ENERGY & ENVIRONMENTAL SCIENCE, 2010, 3 (06) :813-823

[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] 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

← 1 2 3 4 →