Suppression of O2 evolution from oxide cathode for lithium-ion batteries: VOx-impregnated 0.5Li2MnO3–0.5LiNi0.4Co0.2Mn0.4O2 cathode

Kyu-Sung Park; Anass Benayad; Min-Sik Park; Wonchang Choi; Dongmin Im

doi:10.1039/C0CC00281J

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Suppression of O₂ evolution from oxide cathode for lithium-ion batteries: VO_x-impregnated 0.5Li₂MnO₃–0.5LiNi_0.4Co_0.2Mn_0.4O₂ cathode†

Kyu-Sung Park,*^a Anass Benayad,*^b Min-Sik Park,^a Wonchang Choi^a and Dongmin Im^a

Author affiliations

* Corresponding authors

^a Battery Group, Samsung Advanced Institute of Technology (SAIT), Yongin 446-712, Korea
E-mail: ks337.park@samsung.com, kspark37@gmail.com

^b Analytical Engineering Group, SAIT, Yongin 446-712, Korea
E-mail: benayad.anass@samsung.com

Abstract

A VO_x-impregnated oxide cathode for lithium ion batteries exhibits a substantial drop in oxygen evolution during high voltage operation. An electrolyte was found to catalyze the gas evolution, and the VO_x layer could protect the cathode oxide surface from the electrolyte and stabilize the surface oxide ions during their electrochemical oxidation.

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Supplementary files

Experimental, XRD, Electrochemical data, EDS with SEM/TEM, FT-IR, C 1s XPS spectra PDF (756K)

Article information

DOI: https://doi.org/10.1039/C0CC00281J
Article type: Communication
Submitted: 08 Mar 2010
Accepted: 09 Apr 2010
First published: 10 May 2010

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Chem. Commun., 2010,46, 4190-4192

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Suppression of O₂ evolution from oxide cathode for lithium-ion batteries: VO_x-impregnated 0.5Li₂MnO₃–0.5LiNi_0.4Co_0.2Mn_0.4O₂ cathode

K. Park, A. Benayad, M. Park, W. Choi and D. Im, Chem. Commun., 2010, 46, 4190 DOI: 10.1039/C0CC00281J

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Chemical Communications