Effect of titanium substitution in layered LiNiO2 cathode material prepared by molten-salt synthesis

Hyung Wook Ha; Kyung Hee Jeong; Keon Kim

doi:10.1016/j.jpowsour.2006.03.086

Effect of titanium substitution in layered LiNiO₂ cathode material prepared by molten-salt synthesis

Hyung Wook Ha, Kyung Hee Jeong, Keon Kim

* Honorary professors

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

25 Citations (Scopus)

Abstract

LiNi_1-xTi_xO₂ (0 ≤ x ≤ 0.1) compounds have been synthesized by a direct molten-salt method that uses a eutectic mixture of LiNO₃ and LiOH salts. According to X-ray diffraction analysis, these materials have a well-developed layered structure (R3-m) and are an isostructure of LiNiO₂. The LiNi_1-xTi_xO₂ (0 ≤ x ≤ 0.1) compounds have average particle sizes of 1-5 μm depending on the amount of Ti salt. Charge-discharge tests show that a LiNi_1-xTi_xO₂ (0 ≤ x ≤ 0.1) cathode prepared at 700 °C has an initial discharge capacity as high as 171 mA h g^-1 and excellent capacity retention in the range 4.3-2.8 V at a current density of 0.2 mA cm^-2.

Original language	English
Pages (from-to)	606-611
Number of pages	6
Journal	Journal of Power Sources
Volume	161
Issue number	1
DOIs	https://doi.org/10.1016/j.jpowsour.2006.03.086
Publication status	Published - 2006 Oct 20

Keywords

Cathode material
Cycling performance
Lithium battery
Lithium nickel oxide
Molten-salt synthesis
Titanium substitution

ASJC Scopus subject areas

Renewable Energy, Sustainability and the Environment
Energy Engineering and Power Technology
Physical and Theoretical Chemistry
Electrical and Electronic Engineering

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1016/j.jpowsour.2006.03.086

Cite this

@article{7433c7530c7b4c8e92c812a3f8d16132,

title = "Effect of titanium substitution in layered LiNiO2 cathode material prepared by molten-salt synthesis",

abstract = "LiNi1-xTixO2 (0 ≤ x ≤ 0.1) compounds have been synthesized by a direct molten-salt method that uses a eutectic mixture of LiNO3 and LiOH salts. According to X-ray diffraction analysis, these materials have a well-developed layered structure (R3-m) and are an isostructure of LiNiO2. The LiNi1-xTixO2 (0 ≤ x ≤ 0.1) compounds have average particle sizes of 1-5 μm depending on the amount of Ti salt. Charge-discharge tests show that a LiNi1-xTixO2 (0 ≤ x ≤ 0.1) cathode prepared at 700 °C has an initial discharge capacity as high as 171 mA h g-1 and excellent capacity retention in the range 4.3-2.8 V at a current density of 0.2 mA cm-2.",

keywords = "Cathode material, Cycling performance, Lithium battery, Lithium nickel oxide, Molten-salt synthesis, Titanium substitution",

author = "Ha, {Hyung Wook} and Jeong, {Kyung Hee} and Keon Kim",

note = "Funding Information: This research was performed with financial support from the {\textquoteleft}Center for Nanostructured Materials Technology{\textquoteright} under the {\textquoteleft}21st Century Frontier R&D Programs{\textquoteright} of the Ministry of Science and Technology, Korea.",

year = "2006",

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doi = "10.1016/j.jpowsour.2006.03.086",

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T1 - Effect of titanium substitution in layered LiNiO2 cathode material prepared by molten-salt synthesis

AU - Ha, Hyung Wook

AU - Jeong, Kyung Hee

AU - Kim, Keon

N1 - Funding Information: This research was performed with financial support from the ‘Center for Nanostructured Materials Technology’ under the ‘21st Century Frontier R&D Programs’ of the Ministry of Science and Technology, Korea.

PY - 2006/10/20

Y1 - 2006/10/20

N2 - LiNi1-xTixO2 (0 ≤ x ≤ 0.1) compounds have been synthesized by a direct molten-salt method that uses a eutectic mixture of LiNO3 and LiOH salts. According to X-ray diffraction analysis, these materials have a well-developed layered structure (R3-m) and are an isostructure of LiNiO2. The LiNi1-xTixO2 (0 ≤ x ≤ 0.1) compounds have average particle sizes of 1-5 μm depending on the amount of Ti salt. Charge-discharge tests show that a LiNi1-xTixO2 (0 ≤ x ≤ 0.1) cathode prepared at 700 °C has an initial discharge capacity as high as 171 mA h g-1 and excellent capacity retention in the range 4.3-2.8 V at a current density of 0.2 mA cm-2.

AB - LiNi1-xTixO2 (0 ≤ x ≤ 0.1) compounds have been synthesized by a direct molten-salt method that uses a eutectic mixture of LiNO3 and LiOH salts. According to X-ray diffraction analysis, these materials have a well-developed layered structure (R3-m) and are an isostructure of LiNiO2. The LiNi1-xTixO2 (0 ≤ x ≤ 0.1) compounds have average particle sizes of 1-5 μm depending on the amount of Ti salt. Charge-discharge tests show that a LiNi1-xTixO2 (0 ≤ x ≤ 0.1) cathode prepared at 700 °C has an initial discharge capacity as high as 171 mA h g-1 and excellent capacity retention in the range 4.3-2.8 V at a current density of 0.2 mA cm-2.

KW - Cathode material

KW - Cycling performance

KW - Lithium battery

KW - Lithium nickel oxide

KW - Molten-salt synthesis

KW - Titanium substitution

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