Improvement of the electrochemical performance of LiFePO4 cathode by Y-doping

被引：5

作者：

Herrera, F. ^{[1
]}

Fuenzalida, F. ^{[1
]}

Marquez, P. ^{[1
]}

Gautier, J. L. ^{[1
]}

机构：

[1] Univ Santiago Chile, Fac Quim & Biol, Dept Quim Mat, Av LB OHiggins 3363, Santiago, Chile

来源：

MRS COMMUNICATIONS | 2017年 / 7卷 / 03期

关键词：

LITHIUM-ION BATTERIES; HYDROTHERMAL SYNTHESIS; IRON PHOSPHATE; ANODE;

D O I：

10.1557/mrc.2017.71

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

LiFe1-xYxPO4 doped (d-LFP) with amounts of yttrium (0.01% < x < 5% w/w) show a remarkable effect on the electrochemical behavior. The d-LPF samples were investigated on the Li extraction/insertion performance through charge/discharge and capacity-voltage curves. The best performance was attained with Y content of x = 1%. The materials were synthesized by a hydrothermal method and characterized by x-ray diffraction (XRD) and scanning electron microscopy-energy dispersive x-ray spectroscopy (SEM-EDX). The XRD studies showed that d-LPF had the same monoclinic structure as the undoped material. The achieved electrode performance has been attributed to the addition of Y3+ ion by stabilizing the orthorhomic structure. The electrode resistance decreases through the Y-doping.

引用

页码：515 / 522

页数：8

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