@ARTICLE{10.3389/fchem.2020.00283, AUTHOR={Chen, Xi and Li, Zhao and Zhang, Yue and Liu, Dongming and Wang, Chunyang and Li, Yongtao and Si, Tingzhi and Zhang, Qingan}, TITLE={Enhanced Low-Temperature Hydrogen Storage in Nanoporous Ni-Based Alloy Supported LiBH4}, JOURNAL={Frontiers in Chemistry}, VOLUME={8}, YEAR={2020}, URL={https://www.frontiersin.org/articles/10.3389/fchem.2020.00283}, DOI={10.3389/fchem.2020.00283}, ISSN={2296-2646}, ABSTRACT={To reveal the synergistic effect of nanoconfinement and metallic catalysis on the hydrogen storage properties of LiBH4, the nanoporous Ni-based alloy (np-Ni) was prepared herein by dealloying of the Mn70Ni30 alloy in (NH4)2SO4 solution, and then LiBH4 was loaded into np-Ni to construct the LiBH4/np-Ni hydrogen storage system using wet impregnation. It was found that dehydrogenation of the LiBH4/np-Ni (1:5) system starts at around 70°C and ends before 400°C, with ~11.9 wt.% of hydrogen desorbed. The apparent dehydrogenation activation energy for the LiBH4/np-Ni (1:5) system was remarkable decreased to about 11.4 kJ/mol. After rehydrogenation at 450°C under 8 MPa hydrogen pressure, ~8.2 wt.% of hydrogen can be released from about 60°C upon second dehydrogenation. These obtained results would provide an efficient strategy for improving the hydrogen storage properties of other metal borohydrides.} }