Improved rate capability in a high-capacity layered cathode material via thermal reduction

Ali Abouimrane; Owen C. Compton; Haixia Deng; Ilias Belharouak; Dimtriy A. Dikin; SonBinh Nguyen; Khalil Amine

doi:10.1149/1.3597655

Improved rate capability in a high-capacity layered cathode material via thermal reduction

Ali Abouimrane^*, Owen C. Compton, Haixia Deng, Ilias Belharouak, Dimtriy A. Dikin, SonBinh Nguyen, Khalil Amine

^*Corresponding author for this work

Chemistry

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

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Abstract

Thermal treatment of the high-capacity integrated-structure cathode material Li₂MnO₃-LiMO₂ (M Mn, Ni, and Co) under a reductive H₂ atmosphere was investigated as a means to improve its rate capability when incorporated into a Lithium-ion battery (LIB). The heat-treated electrode, with a composition of Li_1.12Mn _0.55Ni_0.145Co_0.1O₂, shows a better coulombic charge-discharge efficiency and a good cycleability than the pristine material. This improvement can be attributed to a reduction in the valence of some Mn ions from 4 to 3, as monitored by X-ray photoelectron spectroscopy.

Original language	English (US)
Pages (from-to)	A126-A129
Journal	Electrochemical and Solid-State Letters
Volume	14
Issue number	9
DOIs	https://doi.org/10.1149/1.3597655
State	Published - 2011

ASJC Scopus subject areas

General Chemical Engineering
General Materials Science
Physical and Theoretical Chemistry
Electrochemistry
Electrical and Electronic Engineering

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title = "Improved rate capability in a high-capacity layered cathode material via thermal reduction",

abstract = "Thermal treatment of the high-capacity integrated-structure cathode material Li2MnO3-LiMO2 (M Mn, Ni, and Co) under a reductive H2 atmosphere was investigated as a means to improve its rate capability when incorporated into a Lithium-ion battery (LIB). The heat-treated electrode, with a composition of Li1.12Mn 0.55Ni0.145Co0.1O2, shows a better coulombic charge-discharge efficiency and a good cycleability than the pristine material. This improvement can be attributed to a reduction in the valence of some Mn ions from 4 to 3, as monitored by X-ray photoelectron spectroscopy.",

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AU - Abouimrane, Ali

AU - Compton, Owen C.

AU - Deng, Haixia

AU - Belharouak, Ilias

AU - Dikin, Dimtriy A.

AU - Nguyen, SonBinh

AU - Amine, Khalil

PY - 2011

Y1 - 2011

N2 - Thermal treatment of the high-capacity integrated-structure cathode material Li2MnO3-LiMO2 (M Mn, Ni, and Co) under a reductive H2 atmosphere was investigated as a means to improve its rate capability when incorporated into a Lithium-ion battery (LIB). The heat-treated electrode, with a composition of Li1.12Mn 0.55Ni0.145Co0.1O2, shows a better coulombic charge-discharge efficiency and a good cycleability than the pristine material. This improvement can be attributed to a reduction in the valence of some Mn ions from 4 to 3, as monitored by X-ray photoelectron spectroscopy.

AB - Thermal treatment of the high-capacity integrated-structure cathode material Li2MnO3-LiMO2 (M Mn, Ni, and Co) under a reductive H2 atmosphere was investigated as a means to improve its rate capability when incorporated into a Lithium-ion battery (LIB). The heat-treated electrode, with a composition of Li1.12Mn 0.55Ni0.145Co0.1O2, shows a better coulombic charge-discharge efficiency and a good cycleability than the pristine material. This improvement can be attributed to a reduction in the valence of some Mn ions from 4 to 3, as monitored by X-ray photoelectron spectroscopy.

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Improved rate capability in a high-capacity layered cathode material via thermal reduction

Abstract

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