We report a method for the design and fabrication of 3D printed bioanodes for Biophotovotaic (BPV) applications. Electrodes were fabricated in 5 different thicknesses, from 0.2 mm to 1.0 mm with a 0.2 mm increment and the electrodes were coated with multi-wall carbon nanotubes (MWCNTs). Electrochemical characterisation of these electrodes was performed and the performance tested alongside a bare carbon paper electrode in a bespoke designed membrane electrode assembly (MEA)-type BPV device. All of the MWCNTs-coated 3D printed electrodes outperformed the bare carbon paper electrode. The best performing one (1.0 mm) showed a 40 times increment in power density and a 20 times reduction of the internal resistance. The successful development of the 3D printed bioanode can be used as a standardised platform for the comparison of similar materials. The development of the electrodes and MEA-type BPV device will serve as the initial step towards the development of a monolithic 3D printed BPV platform.
Bibliographical noteFunding Information:
This project is supported by the National Research Foundation, Prime Minister’s Office, Singapore, under its Campus for Research Excellence and Technological Enterprise (CREATE) programme.
This project is supported by the National Research Foundation, Prime Minister's Office, Singapore, under its Campus for Research Excellence and Technological Enterprise (CREATE) programme.
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