Platinum Nanoarrays Directly Grown onto a 3D-Carbon Felt Electrode as a Bifunctional Material for Garden Compost Microbial Fuel Cell

The practical implementation of air-breathing microbial fuel cell (MFC) is critically linked to the development efficient materials as cathode and electrochemically active biofilm-based anode. In this contribution, we demonstrate feasibility by decorating a 3D carbon felt electrode with Pt nanoarrays (CF@Pt) bifunctional material garden compost bioanode cathode. Half-cell electrochemical characterizations reveal that onset potential anode reaction negatively shifts about 800 mV reach −0.4 V vs Ag/AgCl after growth biofilm onto CF@Pt. investigation before formation shows act excellent electron relays, reducing significantly charge transfer resistance. For MFC application (with proton exchange membrane), use CF@Pt bioanode’ scaffold air-cathode enables drastically enhanced power density P max = 292.3 mW m −2 , high short-circuit current j sc 1.9 A .