Synthesis and electrochemical performance of Li2Co1-xMxPO4F (M = Fe, Mn) cathode materials

被引：14

作者：

Khasanova, Nellie R. ^{[1
]}

Drozhzhin, Oleg A. ^{[1
]}

Fedotov, Stanislav S. ^{[1
]}

Storozhilova, Darya A. ^{[1
]}

Panin, Rodion V. ^{[1
]}

Antipov, Evgeny V. ^{[1
]}

机构：

[1] Moscow MV Lomonosov State Univ, Dept Chem, Moscow 119991, Russia

来源：

BEILSTEIN JOURNAL OF NANOTECHNOLOGY | 2013年 / 4卷

基金：

俄罗斯基础研究基金会;

关键词：

energy related; fluorophosphates; high-energy cathode materials; high-voltage electrolyte; Li-ion batteries; nanomaterials; reversible capacity; LI-ION BATTERIES; ELECTROLYTES; LI2COPO4F;

D O I：

10.3762/bjnano.4.97

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

In the search for high-energy materials, novel 3D-fluorophosphates, Li2Co1-xFexPO4F and Li2Co1-xMnxPO4F, have been synthesized. X-ray diffraction and scanning electron microscopy have been applied to analyze the structural and morphological features of the prepared materials. Both systems, Li2Co1-xFexPO4F and Li2Co1-xMnxPO4F, exhibited narrow ranges of solid solutions: x <= 0.3 and x <= 0.1, respectively. The Li2Co0.9Mn0.1PO4F material demonstrated a reversible electrochemical performance with an initial discharge capacity of 75 mA.h.g(-1) (current rate of C/5) upon cycling between 2.5 and 5.5 V in 1 M LiBF4/TMS electrolyte. Galvanostatic measurements along with cyclic voltammetry supported a single-phase de/intercalation mechanism in the Li2Co0.9Mn0.1PO4F material.

引用

页码：860 / 867

页数：8

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