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Issue 19, 2014
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Study on the cycling performance of LiNi0.5Mn1.5O4 electrodes modified by reactive SiO2 nanoparticles

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Abstract

We demonstrate a facile approach to improve the cycling stability of spinel LiNi0.5Mn1.5O4 materials by their surface modification. The cross-linked composite polymer electrolyte layer was formed on the surface of LiNi0.5Mn1.5O4 by radical polymerization between diethylene glycol diacrylate and SiO2 nanoparticles with reactive vinyl groups. The protective composite polymer layer formed on the LiNi0.5Mn1.5O4 materials suppressed the irreversible decomposition of the electrolyte at high voltages and reduced the dissolution of transition metals from the charged LiNi0.5Mn1.5O4 electrode into the electrolyte at elevated temperature, which resulted in more stable cycling characteristics than the pristine LiNi0.5Mn1.5O4 electrode.

Graphical abstract: Study on the cycling performance of LiNi0.5Mn1.5O4 electrodes modified by reactive SiO2 nanoparticles

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Publication details

The article was received on 07 Nov 2013, accepted on 21 Feb 2014 and first published on 26 Mar 2014


Article type: Paper
DOI: 10.1039/C3TA14558A
Citation: J. Mater. Chem. A, 2014,2, 6863-6869
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    Study on the cycling performance of LiNi0.5Mn1.5O4 electrodes modified by reactive SiO2 nanoparticles

    W. Shin, Y. Lee and D. Kim, J. Mater. Chem. A, 2014, 2, 6863
    DOI: 10.1039/C3TA14558A

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