Page 273 - Alternative Energy Systems in Building Design

TYPES OF FUEL CELLS AND THEIR CHARACTERISTICS

QUALIFIED ELECTRICAL WORKING STATUS EFFICIENCY °C TEMPERATURE, POWER Commercial/research Unknown Above –20 Unknown at 0°C) (50% P peak Commercial/research Unknown Under 40 Unknown Commercial/research Unknown Under 40 To 50 W Mass production Unknown Under 40 Unknown Research Unknown Under 40 Unknown Research Unknown Under 40 Unknown Commercial/res

ELECTROLYTE Aqueous alkaline solution (e.g., potassium hydroxide) Aqueous alkaline solution (e.g., potassium hydroxide) Polymer membrane (ionomer) Aqueous alkaline solution (e.g., potassium hydroxide) Polymer membrane or humic acid Unknown Polymer membrane (ionomer) Aqueous alkaline solution (e.g., sodium hydroxide) Aqueous alkali

TABLE 7.1 FUEL CELL NAME Metal hydride fuel cell Electrogalvanic fuel cell Direct formic acid fuel cell (DFAFC) Zinc-air battery Microbial fuel cell Upflow microbial fuel cell (UMFC) Reversible fuel cell Direct borohydride fuel cell Alkaline fuel cell Direct methanol fuel cell Reformed methanol fuel cell Direct ethanol fuel cell Dir

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