Li₂NH-LiBH₄: a Complex Hydride with Near Ambient Hydrogen Adsorption and Fast Lithium Ion Conduction

Wang, Han; Cao, Hujun; Zhang, Weijin; Chen, Jian; Wu, Hui; Pistidda, Claudio; Ju, Xiaohua; Zhou, Wei; Wu, Guotao; Etter, Martin; Klassen, Thomas; Dornheim, Martin; Chen, Ping

Abstract

Complex hydrides have played important roles in energy storage area. Here a complex hydride made of Li2NH and LiBH4 was synthesized, which has a structure tentatively indexed using an orthorhombic cell with a space group of Pna21 and lattice parameters of a=10.121, b=6.997, and c=11.457 Å. The Li2NH-LiBH4 sample (in a molar ratio of 1:1) shows excellent hydrogenation kinetics, starting to absorb H2 at 310 K, which is more than 100 K lower than that of pristine Li2NH. Furthermore, the Li+ ion conductivity of the Li2NH-LiBH4 sample is about 1.0×10−5 S cm−1 at room temperature, and is higher than that of either Li2NH or LiBH4 at 373 K. Those unique properties of the Li2NH-LiBH4 complex render it a promising candidate for hydrogen storage and Li ion conduction.

Citation

Wang, H., Cao, H., Zhang, W., Chen, J., Wu, H., Pistidda, C., Ju, X., Zhou, W., Wu, G., Etter, M., Klassen, T., Dornheim, M., & Chen, P. (2018). Li₂NH-LiBH₄: a Complex Hydride with Near Ambient Hydrogen Adsorption and Fast Lithium Ion Conduction. Chemistry - A European Journal, 24(6), 1342-1347. https://doi.org/10.1002/chem.201703910

• Journal Article Type: Article
• Online Publication Date: Dec 20, 2017
• Publication Date: Jan 26, 2018
• Deposit Date: May 8, 2025
• Journal: Chemistry - A European Journal
• Print ISSN: 0947-6539
• Electronic ISSN: 1521-3765
• Publisher: Wiley
• Peer Reviewed: Peer Reviewed
• Volume: 24
• Issue: 6
• Pages: 1342-1347
• DOI: https://doi.org/10.1002/chem.201703910
• Keywords: hydrogen storage, lithium borohydride, lithium imide, lithium ion conductor
• Public URL: https://nottingham-repository.worktribe.com/output/34872910
• Publisher URL: https://chemistry-europe.onlinelibrary.wiley.com/doi/10.1002/chem.201703910