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

Authors

Guanglin Xia, University of WollongongFollow
Xiaowei Chen, Fudan University
Cuifeng Zhou, University of Sydney
Chaofeng Zhang, University of WollongongFollow
Dan Li, Xinjiang University, Monash UniversityFollow
Qinfen Gu, Australian Synchrotron Company
Zaiping Guo, University of WollongongFollow
Hua-Kun Liu, University of WollongongFollow
Zongwen Liu, University of Sydney
Xuebin Yu, University of WollongongFollow

RIS ID

101558

Publication Details

Xia, G., Chen, X., Zhou, C., Zhang, C., Li, D., Gu, Q., Guo, Z., Liu, H., Liu, Z. & Yu, X. (2015). Nano-confined multi-synthesis of a Li-Mg-N-H nanocomposite towards low-temperature hydrogen storage with stable reversibility. Journal of Materials Chemistry A, 3 (24), 12646-12652.

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 degrees C, the lowest temperature reported so far, were achieved for the nanoconfined 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.

Grant Number

ARC/DP140102858

Additional Grant Number

http://purl.org/au-research/grants/ARC/DP140102858