摘要:
To suppress a rapid voltage change in each power generation cell constituting a fuel cell stack, power storage devices 11 are respectively connected to each power generation cell 2 or each cell assembly including a plurality of power generation cells 2 of a fuel cell stack 1 to transfer electric charges between each power generation cell 2 and the corresponding power storage device 11 . This allows a voltage control to be performed for each power generation cell 2 , and thus improves the durability of the fuel cell stack.
摘要:
The present invention has an obj ect to provide a catalyst having excellent oxygen reduction reaction activity. The present invention relates to a catalyst comprising a catalyst support and a catalyst metal supported on the catalyst support, wherein a specific surface area of the catalyst per support weight is 715 m 2 /g support or more or a covering ratio of the catalyst metal with an electrolyte is less than 0.5, and an amount of an acidic group of the catalyst per support weight is 0.75 mmol/g support or less.
摘要:
The fuel cell electrode catalyst layer of the present invention includes an electrode catalyst having a conductive support and a platinum-containing metal particle supported on the surface of the conductive support, and an ionomer covering the electrode catalyst. Then, it is characterized in that the average thickness of the ionomer is 2.4 nm or less. The fuel cell electrode catalyst layer can achieve simultaneously a transportability of gas such as oxidant gas and fuel gas and a proton transportability even when the platinum supporting amount is reduced. Further, by applying the fuel cell electrode catalyst layer, it is possible to obtain a fuel cell electrode, a fuel cell membrane electrode assembly and a fuel cell that exert good current-voltage characteristics.