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

Seo Hee Ju; Yun Chan Kang

doi:10.1016/j.jallcom.2008.01.106

Effects of the ratio of manganese and nickel components on the characteristics of Li_x(Mn_yNi_1-y)O_z cathode powders prepared by spray pyrolysis

Seo Hee Ju, Yun Chan Kang

Research output: Contribution to journal › Article › peer-review

4 Citations (Scopus)

Abstract

The effects of the ratio of manganese and nickel components on the characteristics of Li_x(Mn_yNi_1-y)O_z cathode powders prepared by spray pyrolysis are investigated. The LiMn₂O₄, LiMn_1.5Ni_0.5O₄ and LiNi_0.5Mn_0.5O₂ 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(Mn_yNi_1-y)O_z cathode powders. The mean crystallite sizes of the LiMn₂O₄ and LiMn_1.5Ni_0.5O₄ cathode powders with spinel crystal structure are each 50 and 42 nm. The mean crystallite sizes of the LiNiO₂, LiNi_0.75Mn_0.25O₂ and LiNi_0.5Mn_0.5O₂ 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(Mn_yNi_1-y)O_z cathode powders up to 206 mAh/g.

Original language	English
Pages (from-to)	304-309
Number of pages	6
Journal	Journal of Alloys and Compounds
Volume	469
Issue number	1-2
DOIs	https://doi.org/10.1016/j.jallcom.2008.01.106
Publication status	Published - 2009 Feb 5
Externally published	Yes

Bibliographical note

Funding Information:
“Seo Hee Ju was supported by the Seoul Science Fellowship in 2006.”

Keywords

Chemical synthesis
Electrode materials
Gas-solid reaction

ASJC Scopus subject areas

Mechanics of Materials
Mechanical Engineering
Metals and Alloys
Materials Chemistry

Access to Document

10.1016/j.jallcom.2008.01.106

Cite this

@article{1455f47a57c6470d8f4027f36de68ba6,

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

abstract = "The effects of the ratio of manganese and nickel components on the characteristics of Lix(MnyNi1-y)Oz 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 Lix(MnyNi1-y)Oz 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 Lix(MnyNi1-y)Oz cathode powders up to 206 mAh/g.",

keywords = "Chemical synthesis, Electrode materials, Gas-solid reaction",

author = "Ju, {Seo Hee} and Kang, {Yun Chan}",

note = "Funding Information: “Seo Hee Ju was supported by the Seoul Science Fellowship in 2006.”",

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AU - Ju, Seo Hee

AU - Kang, Yun Chan

N1 - Funding Information: “Seo Hee Ju was supported by the Seoul Science Fellowship in 2006.”

PY - 2009/2/5

Y1 - 2009/2/5

N2 - The effects of the ratio of manganese and nickel components on the characteristics of Lix(MnyNi1-y)Oz 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 Lix(MnyNi1-y)Oz 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 Lix(MnyNi1-y)Oz cathode powders up to 206 mAh/g.

AB - The effects of the ratio of manganese and nickel components on the characteristics of Lix(MnyNi1-y)Oz 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 Lix(MnyNi1-y)Oz 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 Lix(MnyNi1-y)Oz cathode powders up to 206 mAh/g.

KW - Chemical synthesis

KW - Electrode materials

KW - Gas-solid reaction

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