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Issue 24, 2015
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Nano-confined multi-synthesis of a Li–Mg–N–H nanocomposite towards low-temperature hydrogen storage with stable reversibility

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Abstract

A Li–Mg–N–H system is a highly promising source of hydrogen storage materials due to its favorable thermodynamics and potential reversibility. Its application has been greatly hindered, however, by its rather high activation energy barriers. Herein, we report a novel multi-reaction methodology for the synthesis of nanosized Li2Mg(NH)2 space-confined into thin-film hollow carbon spheres (THCSs) with a uniform dispersion. It shows that a completely depressed release of ammonia and reversible hydrogen sorption at a temperature of 105 °C, the lowest temperature reported so far, were achieved for the nano-confined Li2Mg(NH)2. Furthermore, a stable cycling capacity close to the theoretical value was also successfully realized, even through up to 20 cycles of de-/re-hydrogenation.

Graphical abstract: Nano-confined multi-synthesis of a Li–Mg–N–H nanocomposite towards low-temperature hydrogen storage with stable reversibility

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Article information


Submitted
13 Jan 2015
Accepted
12 May 2015
First published
14 May 2015

J. Mater. Chem. A, 2015,3, 12646-12652
Article type
Communication

Nano-confined multi-synthesis of a Li–Mg–N–H nanocomposite towards low-temperature hydrogen storage with stable reversibility

G. Xia, X. Chen, C. Zhou, C. Zhang, D. Li, Q. Gu, Z. Guo, H. Liu, Z. Liu and X. Yu, J. Mater. Chem. A, 2015, 3, 12646
DOI: 10.1039/C5TA00259A

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