Hierarchical LiFePO4 with a controllable growth of the (010) facet for lithium-ion batteries

被引：64

作者：

Guo, Binbin ^{[1
]}

Ruan, Hongcheng ^{[1
]}

Zheng, Cheng ^{[1
]}

Fei, Hailong ^{[1
]}

Wei, Mingdeng ^{[1
]}

机构：

[1] Fuzhou Univ, Inst Adv Energy Mat, Fuzhou 350002, Fujian, Peoples R China

来源：

SCIENTIFIC REPORTS | 2013年 / 3卷

基金：

美国国家科学基金会;

关键词：

ROOM-TEMPERATURE; PHASE; PERFORMANCE;

D O I：

10.1038/srep02788

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Hierarchically structured LiFePO4 was successfully synthesized by ionic liquid solvothermal method. These hierarchically structured LiFePO4 samples were constructed from nanostructured platelets with their (010) facets mainly exposed. To the best of our knowledge, facet control of a hierarchical LiFePO4 crystal has not been reported yet. Based on a series of experimental results, a tentative mechanism for the formation of these hierarchical structures was proposed. After these hierarchically structured LiFePO4 samples were coated with a thin carbon layer and used as cathode materials for lithium-ion batteries, they exhibited excellent high-rate discharge capability and cycling stability. For instance, a capacity of 95% can be maintained for the LiFePO4 sample at a rate as high as 20 C, even after 1000 cycles.

引用

页数：6

共 35 条

[1] Deep eutectic solvents formed between choline chloride and carboxylic acids: Versatile alternatives to ionic liquids [J].

Abbott, AP ;

Boothby, D ;

Capper, G ;

Davies, DL ;

Rasheed, RK .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2004, 126 (29) :9142-9147

[2] Building better batteries [J].

Armand, M. ;

Tarascon, J. -M. .

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

[3] Electron microscopy study of the LiFePO4 to FePO4 phase transition [J].

Chen, GY ;

Song, XY ;

Richardson, TJ .

ELECTROCHEMICAL AND SOLID STATE LETTERS, 2006, 9 (06) :A295-A298

[4]

Delacourt C., 2006, SOLID STATE LETT, V9, P352

[5] Particle morphology, crystal orientation, and electrochemical reactivity of LiFePO4 synthesized by the hydrothermal method at 443 K [J].

Dokko, Kaoru ;

Koizumi, Shohei ;

Nakano, Hiroyuki ;

Kanamura, Kiyoshi .

JOURNAL OF MATERIALS CHEMISTRY, 2007, 17 (45) :4803-4810

[6] Surface structures and crystal morphologies of LiFePO4:: relevance to electrochemical behaviour [J].

Fisher, Craig A. J. ;

Islam, M. Saiful .

JOURNAL OF MATERIALS CHEMISTRY, 2008, 18 (11) :1209-1215

[7] Room-temperature single-phase Li insertion/extraction in nanoscale LixFePO4 [J].

Gibot, Pierre ;

Casas-Cabanas, Montse ;

Laffont, Lydia ;

Levasseur, Stephane ;

Carlach, Philippe ;

Hamelet, Stephane ;

Tarascon, Jean-Marie ;

Masquelier, Christian .

NATURE MATERIALS, 2008, 7 (09) :741-747

[8] Approaching theoretical capacity of LiFePO4 at room temperature at high rates [J].

Huang, H ;

Yin, SC ;

Nazar, LF .

ELECTROCHEMICAL AND SOLID STATE LETTERS, 2001, 4 (10) :A170-A172

[9] Atomic-scale investigation of defects, dopants, and lithium transport in the LiFePO4 olivine-type battery material [J].

Islam, MS ;

Driscoll, DJ ;

Fisher, CAJ ;

Slater, PR .

CHEMISTRY OF MATERIALS, 2005, 17 (20) :5085-5092

[10] Battery materials for ultrafast charging and discharging [J].

Kang, Byoungwoo ;

Ceder, Gerbrand .

NATURE, 2009, 458 (7235) :190-193

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