Mechanism for formation of NaBH4 proposed as low-pressure process for storing hydrogen in borosilicate glass-sodium solid system: A hydrogen storage material


Figen A. , Piskin S.

Bulletin of Materials Science, vol.35, no.2, pp.203-209, 2012 (Journal Indexed in SCI Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 35 Issue: 2
  • Publication Date: 2012
  • Doi Number: 10.1007/s12034-012-0282-x
  • Title of Journal : Bulletin of Materials Science
  • Page Numbers: pp.203-209

Abstract

The mechanism for the formation of sodium borohydride (NaBH was investigated for its ability to store hydrogen in the borosilicate glass-sodium (BSG-Na) solid system under low hydrogen pressure. BSG, which was prepared by melting borax with silica, was used as the starting material in the BSG-Na system that would be prepared to store hydrogen. It was observed that the mechanism for storing hydrogen in the BSG-Na solid system consisted of six steps and when the BSG-Na system was heated under a pressure of 4 atm, which was created through the use of hydrogen atmosphere, the storage of hydrogen occurred at nearly 480A degrees C for approximate duration of 200 min, with the excellent yield (97%). In addition, the hydrogen storage capacity of the NaBH sample was measured using the Au-PS structure, which was designed as a mini-hydrogen cell. It was determined that the minimum amount of NaBH to generate the maximum volume of hydrogen gas was 12 mg/ml at 270 mV.