A miniature biofuel cell operating in a physiological buffer.
A glucose-O2 biofuel cell, consisting only of two electrocatalyst coated 7-mum diameter, 2-cm long carbon fibers is reported. The cell operated continuously at 0.52 V at 37 degrees C in a physiological buffer solution for a week, producing 1.9 muW during the first and 1.0 muW during the last day, generating in the period 0.9 J of electrical energy while passing a charge of 1.7 C. If a similar dimension zinc fiber were utilized in a battery at 100% current efficiency, only 0.016 C would have been generated.
Mano
Nicolas
N
Department of Chemical Engineering and Texas Materials Institute, The University of Texas at Austin, Austin, Texas 78712, USA.
Mao
Fei
F
Heller
Adam
A
D001674:Bioelectric Energy Sources; D002021:Buffers; D004566:Electrodes; D005947:Glucose / Q000737:chemistry*; D005949:Glucose Oxidase / Q000737:chemistry*; D006863:Hydrogen-Ion Concentration; D010084:Oxidation-Reduction; D010088:Oxidoreductases / Q000737:chemistry*; D044925:Oxidoreductases Acting on CH-CH Group Donors; D010710:Phosphates / Q000737:chemistry; D011108:Polymers / Q000737:chemistry; D012965:Sodium Chloride / Q000737:chemistry
D002021:Buffers; D010710:Phosphates; D011108:Polymers; D012965:Sodium Chloride; D010088:Oxidoreductases; D005949:Glucose Oxidase; D044925:Oxidoreductases Acting on CH-CH Group Donors; C042401:bilirubin oxidase; D005947:Glucose