Physicochemical transport properties of aqueous sodium metaborate solutions for sodium borohydride hydrogen generation and storage and fuel cell applications

Caroline R. Cloutier, Akram Alfantazi, Elod Gyenge

Research output: Contribution to journalConference articlepeer-review

6 Scopus citations

Abstract

The conductivity and viscosity of aqueous solutions of NaBO2 were measured as a function of concentration at 25°C. Conductivity data was analyzed with various Kohlrausch correlations and the limiting molar conductivity of the BO2- ion at infinite dilution was estimated to be of 30.59 S.cm2/mol. From this value, the mobility, diffusion coefficients and transference number for the BO2 - ion were calculated as 3.17×10-4 cm 2/s.V, 8.14×10-6 cm2/s, and 0.379 respectively. Ion-solvent and ion-ion interactions were studied with Jones-Dole type correlations, which were employed to analyze the viscosity data. A value of -0.4660 1/M was estimated for the BO2- B- coefficient.

Original languageBritish English
Pages (from-to)267-274
Number of pages8
JournalAdvanced Materials Research
Volume15-17
StatePublished - 2007
Event5th International Conference on Processing and Manufacturing of Advanced Materials - THERMEC 2006 - Vancouver, BC, Canada
Duration: 4 Jul 20068 Jul 2006

Keywords

  • Conductivity
  • Hydrogen storage
  • Sodium metaborate
  • Viscosity

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