Electrochemical characteristics of cobalt-substituted lithium nickel oxides synthesized from lithium hydro-oxide and nickel and cobalt oxides

被引：5

作者：

Song, Myoung Youp ^{[1
]}

Rim, Ho ^{[2
]}

Park, Hye Ryoung ^{[3
]}

机构：

[1] Chonbuk Natl Univ, Engn Res Inst, Div Adv Mat Engn, Hydrogen & Fuel Cell Res Ctr, Jeonju 561756, South Korea

[2] ASE Korea, Paju Si 413790, Gyeonggi Do, South Korea

[3] Chonnam Natl Univ, Sch Appl Chem Engn, Kwangju 500757, South Korea

来源：

CERAMICS INTERNATIONAL | 2012年 / 38卷 / 08期

关键词：

LiNi1-yCoyO2; Solid state reaction method; Voltage vs. x in LixNi1-yCoyO2 curve; Discharge capacity; SPINEL PHASE LIMN2O4; CATHODE MATERIALS; SECONDARY BATTERIES; RECHARGEABLE BATTERIES; SPRAY-PYROLYSIS; LINIO2; CELLS; ELECTRODE; LICOO2; TEMPERATURE;

D O I：

10.1016/j.ceramint.2012.05.044

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

LiNi1-yCoyO2 (y=0.1, 0.3 and 0.5) were synthesized by solid state reaction method at 800 degrees C and 850 degrees C from LiOH center dot H2O, NiO and Co3O4 as starting materials. The electrochemical properties of the synthesized LiNi1-yCoyO2 were investigated. As the content of Co decreases, particle size decreases rapidly and particle size distribution gets more homogeneous. When the particle size is compared at the same composition, the particles synthesized at 850 degrees C are larger than those synthesized at 800 degrees C. LiNi0.7Co0.3O2 synthesized at 850 degrees C has the largest intercalated and deintercalated Li quantity Delta x among LiNi1-yCoyO2 (y=0.1, 0.3 and 0.5). LiNi0.7Co0.3O2 synthesized at 850 degrees C has the largest first discharge capacity (178 mAh/g), followed by LiNi0.7Co0.3O2 (162 mAh/g) synthesized at 800 degrees C. LiNi0.7Co0.3O2 synthesized at 800 degrees C has discharge capacities of 162 and 125 inAh/g at n = 1 and n = 5, respectively. (c) 2012 Elsevier Ltd and Techna Group S.r.l. All rights reserved.

引用

页码：6591 / 6597

页数：7

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