Calcium chloride substitution in sodium borohydride

Mattox, Tracy M.; Bolek, Georgia; Pham, Anne L.; Kunz, Martin; Liu, Yi‐Sheng; Fakra, Sirine C.; Gordon, Madeleine P.; Doran, Andrew; Guo, Jinghua

doi:10.1016/j.jssc.2020.121499

Cited by 3 publications

(3 citation statements)

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“…[158]. It's worth noting that a tentative metathesis reaction of NaBH 4 and CaCl 3 did not yield the expected Ca(BH 4 ) 2 product, and il led to CaNa(BH 4 ) 1-x Cl x instead, which forms as a result of a diffusional process of one reagent into the other [46].…”

Section: Rhcs-reactive Hydride Composites Containing Ca(bh 4 ) 2 or I...mentioning

confidence: 97%

“…Cation substitution has been pursued in dual-cation borohydrides in order to decrease the energy barriers in hydrogenation studies of calcium borohydride [43][44][45][46][47]. For instance, Fang et al studied the dual-cation (Li, Ca) borohydride LiCa(BH 4 ) 3 [43].…”

Section: Cation Substitutionmentioning

confidence: 99%

“…Additionally, LiBH 4 •Ca(BH 4 ) 2 •2THF was shown to store reversibly up to 5.63 wt.% H 2 in the second a/d cycle [44]. Switching LiBH 4 with NaBH 4 , Mattox et al have reported the influence of the borohydride starting material on the additive used (40% CaCl 2 ), concluding that NaBH 4 might interpenetrate the CaCl 2 lattice, expanding it [46]. The hypothesized product was marked as CaNa(BH 4 ) 1-x Cl x , akin to the expected product based on Equation (12).…”

Section: Cation Substitutionmentioning

confidence: 99%

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Calcium Borohydride Ca(BH4)2: Fundamentals, Prediction and Probing for High-Capacity Energy Storage Applications, Organic Synthesis and Catalysis

Comănescu

2023

Energies

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Calcium borohydride (Ca(BH4)2) is a complex hydride that has been less investigated compared to its lighter counterpart, magnesium borohydride. While offering slightly lower hydrogen storage capacity (11.5 wt% theoretical maximum, 9.6 wt% under actual dehydrogenation conditions), there are many improvement avenues for maximizing the reversible hydrogen storage that have been explored recently, from DFT calculations and polymorph investigations to reactive hydride composites (RHCs) and catalytic and nanosizing effects. The stability of Ca(BH4)2, the possibility of regeneration from spent products, and the relatively mild dehydrogenation conditions make calcium borohydride an attractive compound for hydrogen storage purposes. The ionic conductivity enhancements brought about by the rich speciation of borohydride anions can extend the use of Ca(BH4)2 to battery applications, considering the abundance of Ca relative to alkali metal borohydrides typically used for this purpose. The current work aims to review the synthetic strategies, structural considerations of various polymorphs and adducts, and hydrogen storage capacity of composites based on calcium borohydrides and related complex hydrides (mixed anions, mixed cations, additives, catalysts, etc.). Additional applications related to batteries, organic and organometallic chemistry, and catalysis have been briefly described.

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Section: Rhcs-reactive Hydride Composites Containing Ca(bh 4 ) 2 or I...mentioning

confidence: 97%