Mossbauer Spectroscopy and Magnetic Measurements As Complementary Techniques for the Phase Analysis of FeP Electrodes Cycling in Li-Ion Batteries

被引：45

作者：

Boyanov, S. ^{[1
]}

Womes, M. ^{[1
]}

Monconduit, L. ^{[1
]}

Zitoun, D. ^{[1
,2
]}

机构：

[1] Univ Montpellier 2, AIME, Inst Charles Gerhardt, F-34095 Montpellier, France

[2] Bar Ilan Univ, Ctr Nanomat, Inst Nanotechnol, Ramat Gan, Israel

来源：

CHEMISTRY OF MATERIALS | 2009年 / 21卷 / 15期

关键词：

IRON; LITHIUM; PARTICLES; COBALT; PHOSPHIDES; REACTIVITY;

D O I：

10.1021/cm901243a

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：

Iron phosphide (FeP) anodes react with lithium through a conversion reaction FeP + 3Li = Li3P + Fe degrees, leading to nanosized Fe degrees particles embedded in a Li3P matrix. Electrochemical tests coupled to Fe-57 Mossbauer spectroscopy and magnetic measurements confirm the previously proposed reaction mechanism and complete the investigation of the electrodes by gaining information on the Fe nanoparticles size and surface state from magnetic measurements. More importantly combining Mossbauer spectroscopy and magnetic measurements appears to be a powerful tool to characterize electrode materials and to give better insights into the complex lithiation-delithiation processes.

引用

页码：3684 / 3692

页数：9

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