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Alkaline fuel cells that are directly fed by sodium or potassium borohydride as a fuel and either air/oxygen or hydrogen peroxide as the oxidant are known as direct borohydride fuel cells.
DBFCs are relatively new fuel cell types that are still in the research and development stage. They are appealing because they have a higher operating potential than other fuel cell types.
Recently, DBFCs operating at twice the voltage and with peak power comparable to proton-exchange membrane fuel cells (PEMFCs) have been described.
Because DBFCs do not require pricey platinum catalysts, they could be manufactured more affordably than conventional fuel cells. They also have a greater power density.
Due to the DBFC’s high operating voltage, fewer cells (in a series circuit) are required in a stack to obtain the requisite rated voltage, which significantly lowers the stack’s cost.
Global direct borohydride fuel cell market accounted for $XX Billion in 2022 and is anticipated to reach $XX Billion by 2030, registering a CAGR of XX% from 2023 to 2030.
High-power direct borohydride fuel cells (DBFCs), which run at twice the voltage of normal hydrogen fuel cells, have been created by engineers.
The study group determined the best flow rates, flow field designs, and residence periods for high-power operation. The optimal distribution of fuel and oxidants as well as the reduction of parasitic processes are addressed by this strategy.
With peak outputs close to 1 watt/cm2, the team has established single-cell operating voltages of 1.4 or greater, more than double those attained in traditional hydrogen fuel cells.
When stacking numerous cells into a stack for commercial application, doubling the voltage would enable a smaller, lighter, more efficient fuel cell design, which translates into considerable gravimetric and volumetric advantages. Their method can be used with several sorts of liquid/liquid fuel cells.
Reactant-transport engineering offers a technique to greatly improve these fuel cells’ performance while still utilising existing parts; even currently used, commercially available liquid fuel cells can experience improvements in performance.
The elimination or reduction of side effects is the key to enhancing any current fuel cell technology. The majority of efforts are focused on creating new catalysts, however adoption and field deployment of these catalysts encounter substantial obstacles.
