Efficient Hydrogen Delivery for Microbial Electrosynthesis via 3D-Printed Cathodes.

ABSTRACT: The efficient delivery of electrochemically in situ produced H₂ can be a key advantage of microbial electrosynthesis over traditional gas fermentation. However, the technical details of how to supply large amounts of electric current per volume in a biocompatible manner remain unresolved. Here, we explored for the first time the flexibility of complex 3D-printed custom electrodes to fine tune H₂ delivery during microbial electrosynthesis. Using a model system for H₂-mediated electromethanogenesis comprised of 3D fabricated carbon aerogel cathodes plated with nickel-molybdenum and Methanococcus maripaludis, we showed that novel 3D-printed cathodes facilitated sustained and efficient electromethanogenesis from electricity and CO₂ at a

SUBMITTER: Kracke F 

PROVIDER: S-EPMC8369483 | biostudies-literature | 2021

REPOSITORIES: biostudies-literature