A flexible micro biofuel cell utilizing hydrogel containing ascorbic acid

14th International Conference on Micro and Nanotechnology for Power Generation and Energy Conversion Applications

物理学;能源学

Goto, Hideaki^1 ; Fukushi, Yudai^1 ; Nishioka, Yasushiro^1

Department of Precision Machinery Engineering, College of Science and Technology, Nihon University, 7-24-1 Narashinodai, Chiba, Funabashi

274-8501, Japan^1

关键词: Electrode surface area;    Electrode surfaces;    Flexible polyimide substrate;    Maximum power;    Porous carbons;    Power densities;    Pt electrode;    Screen printing technique;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/557/1/012048/pdf
DOI  :  10.1088/1742-6596/557/1/012048

来源: IOP

【 摘 要 】

This paper reports on a biofuel cell with a dimension of 13×24 mm2fabricated on a flexible polyimide substrate. I its porous carbon-coated platinum (Pt) electrodes of 3 mm in width and 10 mm in length were fabricated using photolithography and screen printing techniques. Porous carbon was deposited by screen printing of carbon black ink on the Pt electrode surfaces in order to increase the effective electrode surface area and to absorb more enzymes on the electrode surfaces. It utilizes a solidified ascorbic acid (AA) aqueous solution in an agarose hydrogel to increase the portability. The maximum power and power density for the biofuel cell with the fuel unit containing 100 mM AA were 0.063 μW and 0.21 μW/cm2at 0.019 V, respectively.