Hierarchically conductive electrodes unlock stable and scalable CO₂ electrolysis.

ABSTRACT: Electrochemical CO₂ reduction has emerged as a promising CO₂ utilization technology, with Gas Diffusion Electrodes becoming the predominant architecture to maximize performance. Such electrodes must maintain robust hydrophobicity to prevent flooding, while also ensuring high conductivity to minimize ohmic losses. Intrinsic material tradeoffs have led to two main architectures: carbon paper is highly conductive but floods easily; while expanded Polytetrafluoroethylene is flooding resistant but non-conductive, limiting electrode sizes to just 5 cm². Here we demonstrate a hierarchically conductive electrode architecture which overcomes these scaling limitations by employing inter-woven microscale conductors within a hydrophobic expanded Polytetrafluoroethylene

SUBMITTER: Rufer S 

PROVIDER: S-EPMC11561081 | biostudies-literature | 2024 Nov

REPOSITORIES: biostudies-literature