In situ 119Sn Mossbauer spectroscopy study of Sn-based electrode materials

被引：18

作者：

Aboulaich, Abdelmaula

Robert, Florent

Lippens, Pierre Emmanuel

Aldon, Laurent

Olivier-Fourcade, Josette

Willmann, Patrick

Jumas, Jean-Claude

机构：

[1] Univ Montpellier 2, Lab Agregats Mol & Mat Inorgan, UMR 5072, CNRS, F-34095 Montpellier 5, France

[2] Ctr Natl Etud Spatiales, F-31401 Toulouse 9, France

来源：

HYPERFINE INTERACTIONS | 2006年 / 167卷 / 1-3期

关键词：

Li-ion batteries; tin-based composite materials; in situ Mossbauer spectroscopy;

D O I：

10.1007/s10751-006-9358-6

中图分类号：

O64 [物理化学（理论化学）、化学物理学]; O56 [分子物理学、原子物理学];

学科分类号：

070203 ; 070304 ; 081704 ; 1406 ;

摘要：

Sn-based composite materials were synthetized by a conventional melt-quenching method, and studied by X-ray diffraction, electrochemistry and in situ Sn-119 Mosssbauer spectroscopy. Tin was dispersed ex situ into a matrix formed from B2O3:P2O5. XRD and Sn-119 Mossbauer spectroscopy show the formation of an interface between the active species (Sn-0) and the matrix. This amorphous interface acts as a "buffer-zone" which compensates volume changes during the tin-lithium alloy formation and avoids aggregation of tin particles.

引用

页码：733 / 738

页数：6

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