Zr-doped Li[Ni0.5-xMn0.5-xZr2x]O 2 (x = 0, 0.025) as cathode material for lithium ion batteries

Kyung Hee Jeong; Hyung Wook Ha; Nan Ji Yun; Ming Zi Hong; Keon Kim

doi:10.1016/j.electacta.2005.03.014

Zr-doped Li[Ni_0.5-xMn_0.5-xZr_2x]O ₂ (x = 0, 0.025) as cathode material for lithium ion batteries

Kyung Hee Jeong, Hyung Wook Ha, Nan Ji Yun, Ming Zi Hong, Keon Kim

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

28 Citations (Scopus)

Abstract

Layered Li[Ni_0.5-xMn_0.5-xZr_2x]O ₂ (x = 0, 0.025) have been prepared by the mixed hydroxide and molten-salt synthesis method. The individual particles of synthesized materials have a sub-microsize range of 200-500 nm, and LiNi_0.475Mn _0.475Zr_0.05O₂ has a rougher surface than that of LiNi_0.5Mn_0.5O₂. The Li/Li[Ni _0.5-xMn_0.5-xZr_2x]O₂ (x = 0, 0.025) electrodes were cycled between 4.5 and 2.0 V at a current density of 15 mA/g, the discharge capacity of both cells increased during the first ten cycles. The discharge capacity of the Li/LiNi_0.475Mn_0.475Zr _0.05O₂ cell increased from 150 to 220 mAh/g, which is 50 mAh/g larger than that of the Li/LiNi_0.5Mn_0.5O₂ cell. We found that the oxidation of oxygen and the Mn³⁺ ion concerned this phenomenon from the cyclic voltammetry (CV). Thermal stability of the charged Li[Ni_0.5-xMn_0.5-xZr_2x]O ₂ (x = 0, 0.025) cathode was improved by Zr doping.

Original language	English
Pages (from-to)	5349-5353
Number of pages	5
Journal	Electrochimica Acta
Volume	50
Issue number	27
DOIs	https://doi.org/10.1016/j.electacta.2005.03.014
Publication status	Published - 2005 Sept 20

Bibliographical note

Funding Information:
This research was performed with the financial support of the ‘Center for Nanostructured Materials Technology’ under the ‘21st Century Frontier R&D Programs’ of the Ministry of Science and Technology, KOSEF through the Research Center for Energy Conversion & Storage, and supported by a Korea University Grant, Korea.

Keywords

Cathode material
LiNiMn O
Lithium ion batteries
Zr-doping

ASJC Scopus subject areas

General Chemical Engineering
Electrochemistry

UN SDGs

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

Access to Document

10.1016/j.electacta.2005.03.014

Cite this

@article{9b4b8bde4a7843f4b974d44731e4d32e,

title = "Zr-doped Li[Ni0.5-xMn0.5-xZr2x]O 2 (x = 0, 0.025) as cathode material for lithium ion batteries",

abstract = "Layered Li[Ni0.5-xMn0.5-xZr2x]O 2 (x = 0, 0.025) have been prepared by the mixed hydroxide and molten-salt synthesis method. The individual particles of synthesized materials have a sub-microsize range of 200-500 nm, and LiNi0.475Mn 0.475Zr0.05O2 has a rougher surface than that of LiNi0.5Mn0.5O2. The Li/Li[Ni 0.5-xMn0.5-xZr2x]O2 (x = 0, 0.025) electrodes were cycled between 4.5 and 2.0 V at a current density of 15 mA/g, the discharge capacity of both cells increased during the first ten cycles. The discharge capacity of the Li/LiNi0.475Mn0.475Zr 0.05O2 cell increased from 150 to 220 mAh/g, which is 50 mAh/g larger than that of the Li/LiNi0.5Mn0.5O2 cell. We found that the oxidation of oxygen and the Mn3+ ion concerned this phenomenon from the cyclic voltammetry (CV). Thermal stability of the charged Li[Ni0.5-xMn0.5-xZr2x]O 2 (x = 0, 0.025) cathode was improved by Zr doping.",

keywords = "Cathode material, LiNiMn O, Lithium ion batteries, Zr-doping",

author = "Jeong, {Kyung Hee} and Ha, {Hyung Wook} and Yun, {Nan Ji} and Hong, {Ming Zi} and Keon Kim",

note = "Funding Information: This research was performed with the financial support of 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, KOSEF through the Research Center for Energy Conversion & Storage, and supported by a Korea University Grant, Korea.",

year = "2005",

month = sep,

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doi = "10.1016/j.electacta.2005.03.014",

language = "English",

volume = "50",

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journal = "Electrochimica Acta",

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T1 - Zr-doped Li[Ni0.5-xMn0.5-xZr2x]O 2 (x = 0, 0.025) as cathode material for lithium ion batteries

AU - Jeong, Kyung Hee

AU - Ha, Hyung Wook

AU - Yun, Nan Ji

AU - Hong, Ming Zi

AU - Kim, Keon

N1 - Funding Information: This research was performed with the financial support of the ‘Center for Nanostructured Materials Technology’ under the ‘21st Century Frontier R&D Programs’ of the Ministry of Science and Technology, KOSEF through the Research Center for Energy Conversion & Storage, and supported by a Korea University Grant, Korea.

PY - 2005/9/20

Y1 - 2005/9/20

N2 - Layered Li[Ni0.5-xMn0.5-xZr2x]O 2 (x = 0, 0.025) have been prepared by the mixed hydroxide and molten-salt synthesis method. The individual particles of synthesized materials have a sub-microsize range of 200-500 nm, and LiNi0.475Mn 0.475Zr0.05O2 has a rougher surface than that of LiNi0.5Mn0.5O2. The Li/Li[Ni 0.5-xMn0.5-xZr2x]O2 (x = 0, 0.025) electrodes were cycled between 4.5 and 2.0 V at a current density of 15 mA/g, the discharge capacity of both cells increased during the first ten cycles. The discharge capacity of the Li/LiNi0.475Mn0.475Zr 0.05O2 cell increased from 150 to 220 mAh/g, which is 50 mAh/g larger than that of the Li/LiNi0.5Mn0.5O2 cell. We found that the oxidation of oxygen and the Mn3+ ion concerned this phenomenon from the cyclic voltammetry (CV). Thermal stability of the charged Li[Ni0.5-xMn0.5-xZr2x]O 2 (x = 0, 0.025) cathode was improved by Zr doping.

AB - Layered Li[Ni0.5-xMn0.5-xZr2x]O 2 (x = 0, 0.025) have been prepared by the mixed hydroxide and molten-salt synthesis method. The individual particles of synthesized materials have a sub-microsize range of 200-500 nm, and LiNi0.475Mn 0.475Zr0.05O2 has a rougher surface than that of LiNi0.5Mn0.5O2. The Li/Li[Ni 0.5-xMn0.5-xZr2x]O2 (x = 0, 0.025) electrodes were cycled between 4.5 and 2.0 V at a current density of 15 mA/g, the discharge capacity of both cells increased during the first ten cycles. The discharge capacity of the Li/LiNi0.475Mn0.475Zr 0.05O2 cell increased from 150 to 220 mAh/g, which is 50 mAh/g larger than that of the Li/LiNi0.5Mn0.5O2 cell. We found that the oxidation of oxygen and the Mn3+ ion concerned this phenomenon from the cyclic voltammetry (CV). Thermal stability of the charged Li[Ni0.5-xMn0.5-xZr2x]O 2 (x = 0, 0.025) cathode was improved by Zr doping.

KW - Cathode material

KW - LiNiMn O

KW - Lithium ion batteries

KW - Zr-doping

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U2 - 10.1016/j.electacta.2005.03.014

DO - 10.1016/j.electacta.2005.03.014

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VL - 50

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JO - Electrochimica Acta

JF - Electrochimica Acta

IS - 27

ER -