Development of direct biomass fuel cells for effective use of unutilized biomass

Abstract

Direct biomass fuel cells (DBFC) can directly convert the chemical energy of solid carbon and volatile components that constitute biomass into electrical energy, thereby enabling highly efficient power generation. Furthermore, DBFC do not require a boiler or gasifier, allowing for miniaturization and the effective utilization of unused biomass dispersed in various locations. In this study, power generation tests were conducted using activated carbon, cedar char, and simulated gas to verify the feasibility of DBFC. The results demonstrated that stable power generation can be achieved through regular refueling.

In addition, although the power density of DBFC is much lower than that of SOFC and PEFC fueled by gas, it was found that the same power density as MCFC can be achieved.