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; Urban, Jeffrey J.

doi:10.1016/j.jssc.2020.121499

Title: Calcium chloride substitution in sodium borohydride

Journal Article · 25 June 2020 · Journal of Solid State Chemistry

DOI: https://doi.org/10.1016/j.jssc.2020.121499 · OSTI ID:1635443

Mattox, Tracy M. ^[1]; Bolek, Georgia ^[1]; Pham, Anne L. ^[1]; Kunz, Martin ^[2]; Liu, Yi-Sheng ^[2]; Fakra, Sirine C. ^[2]; Gordon, Madeleine P. ^[3]; Doran, Andrew ^[2]; Guo, Jinghua ^[2]; Urban, Jeffrey J. ^[1]

Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Molecular Foundry
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Advanced Light Source (ALS)
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Molecular Foundry; Univ. of California, Berkeley, CA (United States). Applied Science and Technology

Sodium borohydride (NaBH₄) has been a material of interest for many years in developing metal boride complexes and shows a great deal of potential as a hydrogen storage material. Though many have used various additives as catalysts to weaken the bonds within NaBH₄ to create a more energetically favorable material, very little is understood about how the borohydride interacts with and changes the additives being incorporated. This work uses ball milling to incorporate calcium chloride (CaCl₂) into NaBH₄. Using several x-ray techniques, thermogravimetric analysis, and Raman spectroscopy, this study shows not only that the salt diffuses into NaBH₄ but describes how the borohydride changes the additive itself. In gaining a stronger understanding of what happens to the additives needed to weaken the borohydride bonds, future researchers may have an easier time selecting the appropriate additive to create a borohydride complex that will meet their needs.

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Research Organization:: Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Basic Energy Sciences (BES); USDOE Office of Energy Efficiency and Renewable Energy (EERE); National Science Foundation (NSF)