Patent ID: 7282282

Claim:
A passive direct organic fuel cell comprising: an anode; an anode enclosure communicating with said anode and containing an organic fuel solution that is at least 1.8 M formic acid, said anode enclosure having a gas remover comprising a plurality of passages that are configured to allow passage of CO 2 from said enclosure while substantially preventing passage of said organic fuel solution, said plurality of passages positioned to promote circulation of said organic fuel solution as gas travels therethrough, said anode enclosure being configured to substantially prevent passage of said fuel solution therefrom during operation of the fuel cell whereby said fuel cell operates as a passive fuel cell; a cathode communicating with an oxygen source; a solid polymer electrolyte sandwiched between said anode and said cathode that is substantially impervious to said organic fuel solution; and, wherein said anode, said cathode, and said electrolyte are operative to generate power having a power density of at least 10 mW/cm 2 when operating at room temperature.