Abstract
Rare earth (RE) borohydrides have received considerable attention during the past ten years as possible hydrogen storage materials due to their relatively high gravimetric hydrogen density. This review illustrates the rich chemistry, structural diversity and thermal properties of borohydrides containing RE elements. In addition, it highlights the decomposition and rehydrogenation properties of composites containing RE-borohydrides, light-weight metal borohydrides such as LiBH4 and additives such as LiH.
Highlights
Metal borohydrides are being intensively studied as potential hydrogen and thermal energy storage materials [1,2,3,4,5,6,7] as well as solid state electrolytes [8,9,10,11]
The following sections summarize the thermal behavior of two compounds: Y(BH4 )3 and LiCe(BH4 )3 Cl, which are representative of the monometallic and halide substituted rare earth borohydrides adopting the same structure type
In situ SR-powder X-ray diffraction (PXD) measurements on a LiBH4 -Y(BH4 )3 (3:1) sample heated under dynamic vacuum with a rate of 2 ◦ C/min up to 450 ◦ C shows the presence of three distinct temperature regions (Figure 9a,b) [21]
Summary
Metal borohydrides are being intensively studied as potential hydrogen and thermal energy storage materials [1,2,3,4,5,6,7] as well as solid state electrolytes [8,9,10,11]. The layout is as follows: Section 2 details commonly applied synthesis procedures for RE-borohydrides; Section 3 summarizes the crystal structures of mono-, di- and trimetallic borohydrides containing rare earth elements; Section 4 presents the thermal properties of RE-borohydrides starting from monometallic and halide substituted compounds, followed by composite mixtures containing RE-borohydrides, LiBH4 and LiH. This is the first time that the state of the art for the decomposition and rehydrogenation behavior of composites containing RE-borohydrides has been summarized in literature
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
