TY - JOUR
T1 - Flexible, layered biofuel cells
AU - Miyake, Takeo
AU - Haneda, Keigo
AU - Yoshino, Syuhei
AU - Nishizawa, Matsuhiko
N1 - Funding Information:
The carbon fabric and carbon nanotubes were kindly donated from Toho Tenax Co. and Bayer Co., respectively. This work was partly supported by the Noguchi Institute.
PY - 2013/2/15
Y1 - 2013/2/15
N2 - Similar to conventional electrolyte batteries, biofuel cells often need to be stacked in order to boost their single cell voltage (<1V) up to a practical level. Here, we report a laminated stack of biofuel cells that is composed of bioanode fabrics for fructose oxidation, hydrogel sheets containing electrolyte and fuel (fructose), and O2-diffusion biocathode fabrics. The anode and cathode fabrics were prepared by modifying fructose dehydrogenase and bilirubin oxidase, respectively, on carbon nanotubes-decorated carbon fiber fabrics. The total thickness of the single set of anode/gel/cathode sheets is just 1.1mm. The laminated triple-layer stack produces an open-circuit voltage of 2.09V, which is a 2.8-fold increase over that of a single set cell (0.74V). The present layered cell (5mm×5mm) produces a maximum power of 0.64mW at 1.21V, a level that is sufficient to drive light-emitting diodes.
AB - Similar to conventional electrolyte batteries, biofuel cells often need to be stacked in order to boost their single cell voltage (<1V) up to a practical level. Here, we report a laminated stack of biofuel cells that is composed of bioanode fabrics for fructose oxidation, hydrogel sheets containing electrolyte and fuel (fructose), and O2-diffusion biocathode fabrics. The anode and cathode fabrics were prepared by modifying fructose dehydrogenase and bilirubin oxidase, respectively, on carbon nanotubes-decorated carbon fiber fabrics. The total thickness of the single set of anode/gel/cathode sheets is just 1.1mm. The laminated triple-layer stack produces an open-circuit voltage of 2.09V, which is a 2.8-fold increase over that of a single set cell (0.74V). The present layered cell (5mm×5mm) produces a maximum power of 0.64mW at 1.21V, a level that is sufficient to drive light-emitting diodes.
KW - Biofuel cell
KW - Carbon fabric bioelectrode
KW - Enzyme-nanotube hybrid
KW - Gas-diffusion biocathode
KW - Series-connection
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U2 - 10.1016/j.bios.2012.05.041
DO - 10.1016/j.bios.2012.05.041
M3 - Article
C2 - 22704841
AN - SCOPUS:84868645289
SN - 0956-5663
VL - 40
SP - 45
EP - 49
JO - Biosensors and Bioelectronics
JF - Biosensors and Bioelectronics
IS - 1
ER -