1. Thermal properties of alkaline sodium borohydride solutions
- Author
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Liu, Bin Hong, Li, Zhou Peng, and Suda, S.
- Subjects
- *
THERMAL properties , *SODIUM , *TEMPERATURE measurements , *TERNARY system - Abstract
Abstract: Alkaline sodium borohydride solutions are potential hydrogen sources for fuel cells. Thermal properties of the NaBH4–NaOH–H2O ternary system were measured by DSC and temperature-rise calorimetry. Liquidus temperatures showed that it is possible to store and use the solutions well below 0°C if NaOH concentration is less than 20wt%. The solubility of sodium borohydride was found to be large in these solutions, but decreased with increasing NaOH concentration. The optimum composition for alkaline borohydride solutions seems to be 15wt% NaBH4 in 10wt% NaOH considering both the liquidus temperature and hydrogen storage density. [Copyright &y& Elsevier]
- Published
- 2008
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