A glucose/oxygen enzymatic fuel cell based on redox polymer and enzyme immobilisation at highly-ordered macroporous gold electrodes.
Highly ordered macroporous electrodes are prepared by electro-deposition of gold through a polystyrene sphere template. Drop-coating redox polymer and either glucose oxidase, for the anode, or Melanocarpus albomyces laccase, for the cathode on the macroporous gold provides film-coated electrodes for assembly of membrane-less glucose/oxygen enzymatic fuel cells (EFC) in pH 7.4 buffer containing 10 mM glucose and 0.15 M NaCl. Under these conditions the maximum power density of 17 μW cm(-2) for EFCs using films adsorbed to planar gold electrodes increased to 38 μW cm(-2) for films adsorbed to 2½ sphere gold macroporous electrodes.
School of Chemistry, National University of Ireland, Galway, Ireland.
Susan
S
Boland
Dónal
D
Leech
D001203:Ascomycota / Q000201:enzymology / Q000378:metabolism; D001674:Bioelectric Energy Sources; D002021:Buffers; D055664:Electrochemical Techniques / Q000295:instrumentation / Q000379:methods*; D004566:Electrodes; D004800:Enzymes, Immobilized / Q000737:chemistry*; D005949:Glucose Oxidase / Q000737:chemistry* / Q000378:metabolism; D006046:Gold / Q000737:chemistry*; D006863:Hydrogen-Ion Concentration; D042845:Laccase / Q000737:chemistry* / Q000378:metabolism; D008855:Microscopy, Electron, Scanning / Q000379:methods; D010084:Oxidation-Reduction; D011137:Polystyrenes / Q000737:chemistry*; D016062:Porosity
D002021:Buffers; D004800:Enzymes, Immobilized; D011137:Polystyrenes; D006046:Gold; D005949:Glucose Oxidase; D042845:Laccase