Performance of LiNi0.5Mn1.5O4 prepared by solid-state reaction

被引：44

作者：

Chen, Zhaoyong ^{[1
]}

Zhu, Huali ^{[1
]}

Ji, Shan ^{[2
]}

Linkov, Vladimir ^{[2
]}

Zhang, Jianli ^{[1
]}

Zhu, Wei ^{[1
]}

机构：

[1] Changsha Univ Sci & Technol, Dept Phys & Elect Sci, Inst Mat Sci & Engn, Changsha 410076, Hunan, Peoples R China

[2] Univ Western Cape, S Africa Inst Adv Mat Chem, ZA-7535 Bellville, South Africa

来源：

JOURNAL OF POWER SOURCES | 2009年 / 189卷 / 01期

关键词：

LiNi0.5Mn1.5O4; Spinel; Cathode materials; Lithium ion battery; OXYGEN NONSTOICHIOMETRY; CATHODE MATERIAL; ION BATTERIES; SPINEL;

D O I：

10.1016/j.jpowsour.2008.11.001

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：

LiNi0.5Mn1.5O4 was prepared through a solid-state reaction using various Ni precursors. The effect of precursors on the electrochemical performance of LiNi0.5Mn1.5O4 was investigated. LiNi0.5Mn1.5O4 made from Ni(NO3)(2)center dot 6H(2)O shows the best charge-discharge performance. The reversible capacity of LiNi0.5Mn1.5O4 is about 145 mAh g(-1) and remained 143 mAh g(-1) after 10 cycles at 3.0-5.0V. The XRD results showed that the precursors and the dispersion methods had significant effect on their phase purity. Pure spinel phase can be obtained with high energy ball-milling method and Ni(NO3)(2)center dot 6H(2)O as precursor. Trace amount of NiCl and Li2MnC3 phase were detected in LiNi0.5Mn1.5O4 with manual-mixture method and using Ni(CH3COO)(2)center dot 6H(2)C, NiO and Ni2O3 as precursors. (c) 2008 Elsevier B.V. All rights reserved.

引用

页码：507 / 510

页数：4

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