Influence of B on the Structures and Electrochemical Properties of Sn-Co Alloy

Chem. J. Chinese Universities ›› 2011, Vol. 32 ›› Issue (10): 2367.

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Influence of B on the Structures and Electrochemical Properties of Sn-Co Alloy

SHEN Ding¹, YANG Shao-Bin^2*, WU Xiao-Guang², MI Han²

1. College of Resource and Environment Engineering,
2. College of Materials Science and Engineering, Liaoning Technical University, Fuxin 123000, China

Received:2011-01-04 Revised:2011-06-05 Online:2011-10-10 Published:2011-09-11
Contact: YANG Shao-Bin E-mail:yangshaobin@yahoo.com.cn
Supported by:
高等学校博士学科点专项科研基金(批准号: 20092121110004)资助.

Abstract

Abstract: The Sn-Co/B composites were synthesized using solid\|state sintering and the influence of B element on the structures and electrochemical properties was analyzed. XRD results illustrate that Sn-Co alloy consists of CoSn phase. Adding B results in the refinement of grain size and the formation of CoSn2 phase. Constant-current cyclic testing show that adding B improves the cycle performance of Sn-Co alloy, but reduce its discharge capacity. The initial discharge capacity of Sn-Co/B(4%, mass fraction) is 216 mA•h/g and the capacity retention is 82.9% after 30 cycles, showing the composite has good structural stability.

Key words: Lithium-ion battery, Sn-Co alloy, Boron

CLC Number:

O646

TrendMD:

SHEN Ding, YANG Shao-Bin*, WU Xiao-Guang, MI Han. Influence of B on the Structures and Electrochemical Properties of Sn-Co Alloy[J]. Chem. J. Chinese Universities, 2011, 32(10): 2367.

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Influence of B on the Structures and Electrochemical Properties of Sn-Co Alloy

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