EurekAlert June 17, 2020
Researchers at Washington University have developed high-power direct borohydride fuel cells that operate at double the voltage of conventional hydrogen fuel cells. They pioneered a reactant identifying an optimal range of flow rates, flow field architectures and residence times that enable high power operation ensuring proper fuel and oxidant distribution and the mitigation of parasitic reactions. They demonstrated a single-cell operating voltage of 1.4 or greater, double that obtained in conventional hydrogen fuel cells, with peak powers approaching 1 watt/cm2. Doubling the voltage would allow for a smaller, lighter, more efficient fuel cell design. Their approach is broadly applicable to other classes of liquid/liquid fuel cells…read more. Open Access TECHNICAL ARTICLEÂ
The figure summarizes open circuit voltages of the representative DBFC performance in green and current density at 1.5 V in orange… Credit: Ramani Lab