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Issue 23, 2014
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Bottom-up preparation of MgH2 nanoparticles with enhanced cycle life stability during electrochemical conversion in Li-ion batteries

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Abstract

A promising anode material for Li-ion batteries based on MgH2 with around 5 nm average particles size was synthesized by a bottom-up method. A series of several composites containing MgH2 nanoparticles well dispersed into a porous carbon host has been prepared with different metal content up to 70 wt%. A narrow particle size distribution (1–10 nm) of the MgH2 nanospecies with around 5.5 nm average size can be controlled up to 50 wt% Mg. After a ball milling treatment under Ar, the composite containing 50 wt% Mg shows an impressive cycle life stability with a good electrochemical capacity of around 500 mA h g−1. Moreover, the nanoparticles’ size distribution is stable during cycling.

Graphical abstract: Bottom-up preparation of MgH2 nanoparticles with enhanced cycle life stability during electrochemical conversion in Li-ion batteries

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Supplementary files

Article information


Submitted
20 Jun 2014
Accepted
25 Sep 2014
First published
26 Sep 2014

Nanoscale, 2014,6, 14459-14466
Article type
Paper
Author version available

Bottom-up preparation of MgH2 nanoparticles with enhanced cycle life stability during electrochemical conversion in Li-ion batteries

Y. Oumellal, C. Zlotea, S. Bastide, C. Cachet-Vivier, E. Léonel, S. Sengmany, E. Leroy, L. Aymard, J. Bonnet and M. Latroche, Nanoscale, 2014, 6, 14459
DOI: 10.1039/C4NR03444A

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