Structural and electrochemical properties of micro- and nano-crystalline CoSn electrode materials

被引：29

作者：

Alcantara, Ricardo ^{[1
]}

Rodriguez, Ines ^{[1
]}

Tirado, Jose Luis ^{[1
]}

机构：

[1] Univ Cordoba, Lab Quim Inorgan, E-14071 Cordoba, Spain

来源：

CHEMPHYSCHEM | 2008年 / 9卷 / 08期

关键词：

electrochemistry; intermetallic phases; lithium; Mossbauer spectroscopy; nanoparticles;

D O I：

10.1002/cphc.200800031

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：

Nanocrystalline CoSn with on average crystallite size of 19 nm is obtained at 265 degrees C by following a one-pot method. The structural and electrochemical properties of nano-CoSn are compared to those of micro-CoSn (319 nm) obtained at 500 degrees C. Micro-CoSn has specific capacities below 100 mAhg(-1), but very stable cycling behavior. In contrast, nano-CoSn exhibits reversible specific capacities of over ca. 400 mAhg(-1) in the first cycles, depending on the cycling conditions. The crystalline structure of micro-CoSn is preserved after electrochemical reaction with lithium. Nano-CoSn becomes amorphous upon cycling and a modified Sn-119 Mossbauer spectrum corresponding to a LiCoSn nano-alloy is observed.

引用

页码：1171 / 1177

页数：7

共 34 条

[11] A novel micro-spherical CoSn2/Sn alloy composite as high capacity anode materials for Li-ion rechargeable batteries [J].

Guo, Hong ;

Zhao, Hailei ;

Jia, Xidi ;

Li, Xue ;

Qiu, Weihua .

ELECTROCHIMICA ACTA, 2007, 52 (14) :4853-4857

[12] INVESTIGATION OF COSN USING MOSSBAUER-SPECTROSCOPY [J].

HAGGSTROM, L ;

ERICSSON, T ;

WAPPLING, R .

PHYSICA SCRIPTA, 1975, 11 (02) :94-96

[13] In situ 119Sn Mossbauer effect study of Li-CoSn2 electrochemical system [J].

Ionica-Bousquet, C. M. ;

Lippens, P. E. ;

Aldon, L. ;

Olivier-Fourcade, J. ;

Jumas, J. C. .

CHEMISTRY OF MATERIALS, 2006, 18 (26) :6442-6447

[14] STRUCTURAL STUDIES OF ELECTRODEPOSITED TIN COBALT ALLOYS [J].

JAEN, J ;

VARSANYI, ML ;

KOVACS, E ;

CZAKONAGY, I ;

BUZAS, A ;

VERTES, A ;

KISS, L .

ELECTROCHIMICA ACTA, 1984, 29 (08) :1119-1122

[15] The metal flux:: A preparative tool for the exploration of intermetallic compounds [J].

Kanatzidis, MG ;

Pöttgen, R ;

Jeitschko, W .

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2005, 44 (43) :6996-7023

[16] Copper-tin anodes for rechargeable lithium batteries: an example of the matrix effect in an intermetallic system [J].

Kepler, KD ;

Vaughey, JT ;

Thackeray, MM .

JOURNAL OF POWER SOURCES, 1999, 81 :383-387

[17] Synthesis and morphological, electrochemical characterization of Sn92Co8 nanoalloys for anode materials in Li secondary batteries [J].

Kim, Hyunjung ;

Cho, Jaephil .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2007, 154 (05) :A462-A466

[18] Synthesis and electrochemical properties of Sn87Co13 alloys by NaBH4 and sodium naphthalenide reduction methods [J].

Kim, Hyunjung ;

Cho, Jaephil .

ELECTROCHIMICA ACTA, 2007, 52 (12) :4197-4201

[19]

Lindemann F.A., 1910, Phys. Z, V11, P609

[20] Roentgen investigation in colbalt stannous alloys and a comparison of the system Co-Sn with Fe-Sn and Ni-Sn [J].

Nial, O .

ZEITSCHRIFT FUR ANORGANISCHE UND ALLGEMEINE CHEMIE, 1938, 238 (2/3) :287-296

← 1 2 3 4 →