期刊
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
卷 42, 期 35, 页码 22417-22421出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijhydene.2017.02.044
关键词
Octahydrotriborate; Dodecaborate; Solid electrolyte; Hydrogen storage
资金
- Swiss National Science Foundation [Sinergia CRSII2_160749]
Alkaline or alkaline earth octahydrotriborate M(B3H8)(x) and dodecahydro-closo-dodecaborate MxB12H12 (M = Li, Na, Mg or Ca with x = 1 or 2) have recently attracted a lot of interest for hydrogen storage and solid electrolyte applications. Nevertheless, their syntheses are still a roadblock for large scale applications. In this paper we propose a novel approach for their syntheses starting from the cheapest borohydride NaBH4. The process involves first the solvothermal synthesis of tetrabutylammonium octahydrotriborate (C4H9)(4)NB3H8 (TBAB(3)H(8)) being the basis for the syntheses of the others boranes. Starting from TBAB(3)H(8), we have synthesized pure and unsolvated NaB3H8 by salt metathesis reaction with sodium tetraphenylborate. Then, we have successfully obtained Na2B12H12 by solvothermal decomposition of NaB3H8. This approach has shown to be quantitative and reproducible, which could lead to the development of these boranes in real life applications. (C) 2017 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
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