Author(s): Silva, Diogo ; Nunes, Helder Xavier ; Rangel, Carmen M. ; Pinto, A. M. F. R.
Date: 2025
Persistent ID: http://hdl.handle.net/10400.9/6084
Origin: Repositório do LNEG
Subject(s): Clean energy; Hydrogen production; Sodium borohydride; Hydrolysis; Fuel cells
ABSTRACT: Hydrogen is considered a promising energy vector with the potential to replace fossil fuels, and sodium borohydride serves as an effective energy carrier capable of releasing hydrogen (H2) for off-grid applications. However, the hydrolysis of sodium borohydride has only matured at laboratory-scale. Therefore, the scale-up of a laboratory reactor was designed and manufactured to study the effect of larger H2 production. For that, the effect of inhibitor NaOH concentration and water quality were studied. Experiments using 3 wt% NaOH showed overall better performance than those using 1 wt%. Additionally, experiments using tap water - scarcely reported in the literature - demonstrated performance equal to or better than that achieved with distilled water. These results are indicative of a possible significant reduction in the H2 production cost through this method.
