Enhanced electrochemical performance of <30 nm thin LiMnPO4 nanorods with a reduced amount of carbon as a cathode for lithium ion batteries

被引：27

作者：

Kwon, Nam Hee ^{[1
]}

Fromm, Katharina M. ^{[1
]}

机构：

[1] Univ Fribourg, Dept Chem, CH-1700 Fribourg, Switzerland

来源：

ELECTROCHIMICA ACTA | 2012年 / 69卷

基金：

瑞士国家科学基金会;

关键词：

Li-ion batteries; LiMnPO4; < 30 nm nanoparticle; Surfactant; Carbon; NANOCOMPOSITE MATERIALS; RECHARGEABLE BATTERIES; NANOPARTICLES; OLIVINES; SIZE; FE;

D O I：

10.1016/j.electacta.2012.02.040

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

5-10 nm thin rod shaped LiMnPO4 nanoparticles are synthesized by an improved thermal decomposition method. The synthesis parameters such as the concentration of surfactants, reaction temperature and time, as well as the presence of a solvent play a critical role in the formation of spherical, thin or thick nanorods, and needle-shaped particles of LiMnPO4. A washing procedure to efficiently eliminate the surfactants attached to the surface of LiMnPO4 nanoparticles is presented, avoiding thermal treatment at high temperatures. A nanocomposite LiMnPO4 electrode provides a discharge capacity of 165 mAh/g at 1140 C and 66 mAh/g at 1 C with only 10 wt% of total carbon additive. The characteristics of as-synthesized and low amount of carbon coated LiMnPO4 are described as well as their electrochemical properties. (C) 2012 Elsevier Ltd. All rights reserved.

引用

页码：38 / 44

页数：7

共 34 条

[21] High-Performance Carbon-LiMnPO4 Nanocomposite Cathode for Lithium Batteries [J].

Oh, Seung-Min ;

Oh, Sung-Woo ;

Yoon, Chong-Seung ;

Scrosati, Bruno ;

Amine, Khalil ;

Sun, Yang-Kook .

ADVANCED FUNCTIONAL MATERIALS, 2010, 20 (19) :3260-3265

[22] Effect of structure on the Fe3+/Fe2+ redox couple in iron phosphates [J].

Padhi, AK ;

Nanjundaswamy, KS ;

Masquelier, C ;

Okada, S ;

Goodenough, JB .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1997, 144 (05) :1609-1613

[23] Phospho-olivines as positive-electrode materials for rechargeable lithium batteries [J].

Padhi, AK ;

Nanjundaswamy, KS ;

Goodenough, JB .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1997, 144 (04) :1188-1194

[24] Nanocomposite materials from functional polymers and magnetic colloids [J].

Pyun, Jeffrey .

POLYMER REVIEWS, 2007, 47 (02) :231-263

[25] Citric-acid-coated magnetite nanoparticles for biological applications [J].

Racuciu, M. ;

Creanga, D. E. ;

Airinei, A. .

EUROPEAN PHYSICAL JOURNAL E, 2006, 21 (02) :117-121

[26] Size and shape controlled LiMnPO4 nanocrystals by a supercritical ethanol process and their electrochemical properties [J].

Rangappa, Dinesh ;

Sone, Koji ;

Zhou, Ying ;

Kudo, Tetsuichi ;

Honma, Itaru .

JOURNAL OF MATERIALS CHEMISTRY, 2011, 21 (39) :15813-15818

[27] Cathodic performance of LiMn1-xMxPO4 (M = Ti, Mg and Zr) annealed in an inert atmosphere [J].

Shiratsuchi, Tomoyuki ;

Okada, Shigeto ;

Doi, Takayuki ;

Yamaki, Jun-ichi .

ELECTROCHIMICA ACTA, 2009, 54 (11) :3145-3151

[28] Cycling behaviour of LiCoO2 cathode materials prepared by PAA-assisted sol-gel method for rechargeable lithium batteries [J].

Sun, YK .

JOURNAL OF POWER SOURCES, 1999, 83 (1-2) :223-226

[29] High-performance, nano-structured LiMnPO4 synthesized via a polyol method [J].

Wang, Deyu ;

Buqa, Hilmi ;

Crouzet, Michael ;

Deghenghi, Gianluca ;

Drezen, Thierry ;

Exnar, Ivan ;

Kwon, Nam-Hee ;

Miners, James H. ;

Poletto, Laetitia ;

Graetzel, Michael .

JOURNAL OF POWER SOURCES, 2009, 189 (01) :624-628

[30] TEM study of electrochemical cycling-induced damage and disorder in LiCoO2 cathodes for rechargeable lithium batteries [J].

Wang, HF ;

Jang, YI ;

Huang, BY ;

Sadoway, DR ;

Chiang, YT .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1999, 146 (02) :473-480

← 1 2 3 4 →

Enhanced electrochemical performance of &lt;30 nm thin LiMnPO4 nanorods with a reduced amount of carbon as a cathode for lithium ion batteries

Enhanced electrochemical performance of <30 nm thin LiMnPO4 nanorods with a reduced amount of carbon as a cathode for lithium ion batteries