Ultrafine amorphous Co–W–B alloy as the anode catalyst for a direct borohydride fuel cell

The ultrafine amorphous Co–W–B alloy has been synthesized by chemical reduction and used as anode catalyst in direct borohydride fuel cell. The results show that the maximum power output of the cell is 101 mW cm−2 at 15 °C, and the essential power density of this material can be up to 350 mW cm−2 at 15 °C and 500 mW cm−2 at 60 °C, respectively. The cell has also a good durability, with no attenuation observed after one week of operation.

► The ultrafine amorphous Co–W–B alloy was used as anode catalyst in DBFCs.
► The essential power output of amorphous Co–W–B alloy were 350 mW cm−2 at 15 °C.
► A lifetime test lasting for one week without attenuation.