Tin and tin-based intermetallics as new anode materials for lithium-ion cells

被引：331

作者：

Wachtler, M ^{[1
]}

Besenhard, JO ^{[1
]}

Winter, M ^{[1
]}

机构：

[1] Graz Univ Technol, Inst Chem Technol Inorgan Mat, A-8010 Graz, Austria

来源：

JOURNAL OF POWER SOURCES | 2001年 / 94卷 / 02期

基金：

奥地利科学基金会;

关键词：

Sn/SnSb; electrolyte; surfactant additive; film formation; solid electrolyte interphase; electrochemical impedance;

D O I：

10.1016/S0378-7753(00)00585-1

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：

The galvanostatic cycling behaviour of Sn/SnSb composite electrodes has been studied in 1 mol l(-1) LiClO4/propylene carbonate (PC), 1 mol l(-1) LiPF6/ethylene carbonate (EC)/diethyl carbonate (DEC) (1:1), and 1 mol l(-1) LiClO4/PC saturated with trans-decalin (t-Dec). Capacities between 500 and 600 mA h g(-1) (with respect to the mass of active material) were obtained. Reasons for the irreversible capacities are given and film formation on lithium storage metals and alloys is discussed. The observed coulombic efficiencies were slightly higher for the EC-containing electrolyte than for the PC-based one. Alternatively, improved efficiencies and stand-time behaviour were obtained when the PC electrolyte was saturated with t-Dec, which acts as a surfactant. (C) 2001 Elsevier Science B.V. All rights reserved.

引用

页码：189 / 193

页数：5

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