On the Existence of LiFeVO4 - Tales and Imagination

被引：13

作者：

Clemens, Oliver ^{[1
]}

Bauer, Matthias ^{[2
]}

Haberkorn, Robert ^{[3
]}

Beck, Horst Philipp ^{[1
]}

机构：

[1] Univ Saarland, Inst Anorgan & Analyt Chem & Radiochem, D-66123 Saarbrucken, Germany

[2] Karlsruher Inst Technol, Inst Tech Chem & Polymerchem, D-76128 Karlsruhe, Germany

[3] Univ Saarland, D-66125 Dudweiler, Germany

来源：

ZEITSCHRIFT FUR ANORGANISCHE UND ALLGEMEINE CHEMIE | 2011年 / 637卷 / 7-8期

关键词：

Lithium; Iron; Vanadium; Lithium iron vanadate; Rietveld analysis; XANES; EXAFS; ELECTRICAL CHARACTERIZATION; POWDER DIFFRACTION; OXIDES; CO; LIMNVO4; CONDUCTIVITY; RELAXATION; TRANSPORT; COMPOUND; BEHAVIOR;

D O I：

10.1002/zaac.201100037

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

In this paper, we report investigations on the synthesis of LiFeVO4 as well as a reinvestigation of recently published research reports. Starting with compounds containing V4+ and Fe3+ for synthesis showed to be the best way to realize the desired composition. A single phase material could not be prepared, instead, we find a disproportionation of V4+ to V3+ and V5+ and separation of these ions into two different phases, such as Li0.5+Fe(5z-1)/2z3+V0.5z3+O4 and Li(1-0.5z)/(1-z)+Fe(1.5-2.5z)/(1-z)3+V0.5/(1-z)5+O4, with z approximate to 0.45. Additionally, XANES/EXAFS measurements were performed to determine the cation oxidation states and coordination.

引用

页码：1036 / 1044

页数：9

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