Structural and electrochemical studies of LiNixCo(1-x)VO4 (x=0.2, 0.8) cathode materials for rechargeable lithium batteries

被引：0

作者：

Prakash, D. ^{[1
]}

Masuda, Yoshitake ^{[2
]}

Sanjeeviraja, C. ^{[3
]}

机构：

[1] Hindusthan Inst Technol, Dept Phys, Coimbatore 641032, Tamil Nadu, India

[2] Natl Inst Adv Ind Sci & Technol, Nagoya, Aichi 4638560, Japan

[3] Alagappa Chettiar Coll Engn & Technol, Dept Phys, Karaikkudi 630004, Tamil Nadu, India

来源：

IONICS | 2019年 / 25卷 / 09期

关键词：

LiNixCo(1-x)VO4; Sol-gel method; Rietveld refinement; XPS; Charge-discharge; X-RAY PHOTOELECTRON; LICOO2; PERFORMANCE; ELECTRODE; LINIO2; CELL;

D O I：

10.1007/s11581-019-03001-9

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：

A family of mixed LiNixCo(1-x)VO4 (x = 0.2, 0.8) cathode materials has been synthesized using the sol-gel method. The thermal behavior of the materials has been examined by thermogravimetric (TG) analysis. The Rietveld refinement of powder X-ray diffraction showed the structure with Fd3 over bar (227) space group. Surface analysis was performed using field emission scanning electron microscopy (FESEM) and transmission electron microscopy (TEM). Analysis of Raman spectra reveals the local environment model including VO4 tetrahedra, (Ni,Co)O-6, and LiO6 octahedra as vibrational local units. X-ray photoelectron spectroscopy (XPS) studies on synthesized powder indicate that the oxidation states of nickel, cobalt, and vanadium are + 2, + 3 and + 5, respectively. Charge-discharge cycling tests were carried out to study the performance of the cathode materials.

引用

页码：4089 / 4098

页数：10

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