Effects of the ratio of manganese and nickel components on the characteristics of Lix(MnyNi1-y)Oz cathode powders prepared by spray pyrolysis

被引：4

作者：

Ju, Seo Hee ^{[1
]}

Kang, Yun Chan ^{[1
]}

机构：

[1] Konkuk Univ, Dept Chem Engn, Seoul 143701, South Korea

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2009年 / 469卷 / 1-2期

关键词：

Chemical synthesis; Gas-solid reaction; Electrode materials; ELECTROCHEMICAL PROPERTIES; BATTERY; AL; MN; NI; CO;

D O I：

10.1016/j.jallcom.2008.01.106

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：

The effects of the ratio of manganese and nickel components on the characteristics of Li-x(MnyNi1-y)O-z cathode powders prepared by spray pyrolysis are investigated. The LiMn2O4, LiMn1.5Ni0.5O4 and LiNi0.5Mn0.5O2 cathode powders have spherical shape and non-agglomeration characteristics even after post-treatment. However, the spherical shape of the cathode powders disappeared with increasing the content of nickel component into the Li-x(MnyNi1-y)O-z cathode powders. The mean crystallite sizes of the LiMn2O4 and LiMn1.5Ni0.5O4 cathode powders with spinel crystal structure are each 50 and 42 nm. The mean crystallite sizes of the LiNiO2, LiNi0.75Mn0.25O2 and LiNi0.5Mn0.5O2 cathode powders with layered crystal structures are 40, 30 and 17 nm, respectively. The initial discharge capacity of the spherical shape LiMn2O4 powders is 121 mAh/g. The initial discharge capacities of the powders increased with increasing the nickel content into the Li-x(MnyNi1-y)O-z cathode powders up to 4 206 mAh/g. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：304 / 309

页数：6

共 19 条

[1] Electrochemical performance of nanostructured LiMxMn2-xO4 (M=Co and Al) powders at high charge-discharge operations [J].

Bakenov, Z ;

Taniguchi, I .

SOLID STATE IONICS, 2005, 176 (11-12) :1027-1034

[2] Mechanochemical synthesis of LiNiO2 [J].

Chang, CC ;

Kumta, PN .

MATERIALS SCIENCE AND ENGINEERING B-SOLID STATE MATERIALS FOR ADVANCED TECHNOLOGY, 2005, 116 (03) :341-345

[3] Fabrication and electrochemical characterization of LiCoO2 cathode powder by mechanochemical process [J].

Jeon, YA ;

No, KS ;

Yoon, YS .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2004, 151 (11) :A1870-A1873

[4] Electrochemical characteristics of LiNi0.5Mn1.5O4 prepared by spray drying and post-annealing [J].

Li, Decheng ;

Ito, Atsushi ;

Kobayakawa, Koichi ;

Noguchi, Hideyuki ;

Sato, Yuichi .

ELECTROCHIMICA ACTA, 2007, 52 (05) :1919-1924

[5] All-solid-state lithium battery with LiCo0.3Ni0.7O2 fine powder as cathode materials with an amorphous sulfide electrolyte [J].

Machida, N ;

Maeda, H ;

Peng, H ;

Shigematsu, T .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2002, 149 (06) :A688-A693

[6] Relationship between the electrochemical and particle properties of LiMn2O4 prepared by ultrasonic spray pyrolysis [J].

Matsuda, K ;

Taniguchi, I .

JOURNAL OF POWER SOURCES, 2004, 132 (1-2) :156-160

[7] Hydrothermal synthesis of orthorhombic LiCoxMn1-xO2 and their structural changes during cycling [J].

Myung, ST ;

Komaba, S ;

Kumagai, N .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2002, 149 (10) :A1349-A1357

[8] Improvement of electrochemical properties of LiNi0.5Mn1.5O4 spinel material by fluorine substitution [J].

Oh, Sung-Woo ;

Park, Sang-Ho ;

Kim, Jung-Hyun ;

Bae, Young Chan ;

Sun, Yang-Kook .

JOURNAL OF POWER SOURCES, 2006, 157 (01) :464-470

[9] Structural and electrochemical properties of layered Li[Ni0.5Mn0.5]1-xCoxO2 positive materials synthesized by ultrasonic spray pyrolysis method [J].

Oh, SW ;

Park, SH ;

Park, CW ;

Sun, YK .

SOLID STATE IONICS, 2004, 171 (3-4) :167-172

[10] Comparative study of different crystallographic structure of LiNi0.5Mn1.5O4-δ cathodes with wide operation voltage (2.0-5.0 V) [J].

Park, S. H. ;

Oh, S.-W. ;

Kang, S. H. ;

Belharouak, I. ;

Amine, K. ;

Sun, Y.-K. .

ELECTROCHIMICA ACTA, 2007, 52 (25) :7226-7230

← 1 2 →