RIS ID

108175

Publication Details

Xia, G., Tan, Y., Wu, F., Fang, F., Sun, D., Guo, Z., Huang, Z. & Yu, X. (2016). Graphene-wrapped reversible reaction for advanced hydrogen storage. Nano Energy, 26 488-495.

Abstract

Here, we report the fabrication of a graphene-wrapped nanostructured reactive hydride composite, i.e., 2LiBH4-MgH2, made by adopting graphene-supported MgH2 nanoparticles (NPs) as the nanoreactor and heterogeneous nucleation sites. The porous structure, uniform distribution of MgH2 NPs, and the steric confinement by flexible graphene induced a homogeneous distribution of 2LiBH4-MgH2 nanocomposite on graphene with extremely high loading capacity (80 wt%) and energy density. The well-defined structural features, including even distribution, uniform particle size, excellent thermal stability, and robust architecture endow this composite with significant improvements in its hydrogen storage performance. For instance, at a temperature as low as 350 °C, a reversible storage capacity of up to 8.9 wt% H2, without degradation after 25 complete cycles, was achieved for the 2LiBH4-MgH2 anchored on graphene. The design of this three-dimensional architecture can offer a new concept for obtaining high performance materials in the energy storage field.

Grant Number

ARC/DP140102858

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Link to publisher version (DOI)

http://dx.doi.org/10.1016/j.nanoen.2016.06.016