A Mossbauer effect investigation of the Li-Sn system

被引：108

作者：

Dunlap, RA ^{[1
]}

Small, DA

MacNeil, DD

Obrovac, MN

Dahn, JR

机构：

[1] Dalhousie Univ, Dept Phys, Halifax, NS B3H 3J5, Canada

[2] Dalhousie Univ, Dept Chem, Halifax, NS B3H 3J5, Canada

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 1999年 / 289卷 / 1-2期

基金：

加拿大自然科学与工程研究理事会;

关键词：

in situ measurements; Li-Ni intermetallic compounds; Li-Sn alloys; Mossbauer spectroscopy;

D O I：

10.1016/S0925-8388(99)00165-6

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：

A thorough Mossbauer effect investigation of all the phases in the Li-Sn binary phase diagram has been made. The compounds studied were verified to have the same crystal structures as those reported in the literature. The center shifts (relative to CaSnO3), quadrupole splittings, number of Sn sites and their abundance have been determined for each of the phases by fitting model spectra to the observed data, The observed spectra show mean center shifts near 2.4 mm/s for the Sn-rich phases (Sn, Li2Sn5 and LiSn) and mean center shifts between 2.1 and 1.8 mm/s for the Li-rich phases (Li7Sn3, Li5Sn2, Li13Sn5, Li7Sn2 and Li22Sn5). These results are important for the interpretation of Mossbauer effect measurements on high capacity Sn-based electrode materials for Li-ion batteries. (C) 1999 Elsevier Science S.A. All rights reserved.

引用

页码：135 / 142

页数：8

共 19 条

[1]

CHEKIN VV, 1968, FIZ TVERD TELA, V10, P288

[2] Key factors controlling the reversibility of the reaction of lithium with SnO2 and Sn2BPO6 glass [J].

Courtney, IA ;

Dahn, JR .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1997, 144 (09) :2943-2948

[3]

COURTNEY IA, 1999, IN PRESS ELECTROCHIM

[4]

DAHN JR, 1998, IN PRESS

[5] Application of in situ Mossbauer effect methods for the study of electrochemical reactions in lithium-ion battery electrode materials [J].

Dunlap, RA ;

Mao, O ;

Dahn, JR .

PHYSICAL REVIEW B, 1999, 59 (05) :3494-3500

[6]

FRANK U, 1975, Z NATURFORSCH B, V30, P316

[7]

GLADYSHEVSKII G, 1964, SOV PHYS-CRYSTALLOGR, V9, P338

[8]

Greenwood N. N., 1971, MOSSBAUER SPECTROSCO

[9] CRYSTAL STRUCTURE OF LI2SN5 [J].

HANSEN, DA ;

CHANG, LJ .

ACTA CRYSTALLOGRAPHICA SECTION B-STRUCTURAL CRYSTALLOGRAPHY AND CRYSTAL CHEMISTRY, 1969, B 25 :2392-&

[10] PEAK SHAPE VARIATION IN FIXED-WAVELENGTH NEUTRON POWDER DIFFRACTION AND ITS EFFECT ON STRUCTURAL PARAMETERS OBTAINED BY RIETVELD ANALYSIS [J].

HILL, RJ ;

HOWARD, CJ .

JOURNAL OF APPLIED CRYSTALLOGRAPHY, 1985, 18 (JUN) :173-180

← 1 2 →