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Issue 6, 2015
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Characterization of LiNi0.5Mn1.5O4 spinel electrode in the presence of 1,3,5-trihydroxybenzene as additive

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Abstract

The effect of adding 1,3,5-trihydroxybenzene (THB) to the electrolyte [1.0 M LiPF6 in ethylene carbonate (EC), diethyl carbonate (DEC) and dimethyl carbonate (DMC) (1 : 1 : 1)] on the performance and nature of the surface species on a LiNi0.5Mn1.5O4 cathode in a lithium battery was investigated. The THB additive (0.1 wt%) improved the capacity retention during cycling between 3.5 and 5.0 V (vs. Li+/Li) at room temperature. Surface analysis of LiNi0.5Mn1.5O4 before and after cycling by ex situ X-ray photoelectron spectroscopy revealed that THB inhibited electrolyte decomposition on the cathode surface. The improved cyclability of the LiNi0.5Mn1.5O4 cathode is attributed to better stability of the electrode/electrolyte interface, presumably due to the presence of a THB-derived film.

Graphical abstract: Characterization of LiNi0.5Mn1.5O4 spinel electrode in the presence of 1,3,5-trihydroxybenzene as additive

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Article information


Submitted
27 Oct 2014
Accepted
03 Dec 2014
First published
03 Dec 2014

J. Mater. Chem. A, 2015,3, 2776-2783
Article type
Paper

Characterization of LiNi0.5Mn1.5O4 spinel electrode in the presence of 1,3,5-trihydroxybenzene as additive

A. Perea, K. Zaghib and D. Bélanger, J. Mater. Chem. A, 2015, 3, 2776
DOI: 10.1039/C4TA05767H

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