GAMES - Gas diffusion electrodes for coupled microbial-electrochemical syntheses from CO2


Bild Forschungsprojekt
Period: 01.05.2021 – 01.05.2024

Technische Hochschule Mittelhessen (THM)

Gaskatel Gesellschaft für Gassysteme durch Katalyse und Elektrochemie GmbH

ifn Forschungs- und Technologiezentrum GmbH

Helmholtz Zentrum für Umweltforschung (UFZ)


 Bundesministerium für Bildung und Forschung (BMBF)

Project Manager: Ida Dinges
Team: Sustainable Electrochemistry


Electrochemical synthesis starting from CO2 offers the opportunity to store temporary or local excess energy originating from renewable resources as chemical energy. In this conversion, different carbon-based compounds can be obtained from CO2. Currently, economically viable products include only C1 compounds such as carbon monoxide. Another product is formic acid/formate. In order to follow up the storage of electrical energy by CO2 reduction with a value-added synthesis of more complex compounds, electrochemically produced formate can be converted further by microorganisms. The coupling of electrochemical formate production and a direct microbial conversion to PHB (Polyhydroxybutyrate), so-called bioplastic, was already demonstrated exemplarily on a laboratory scale in a previous project (microbial electrosynthesis).[1]



In the GAMES project, five partners are pursuing the industrial implementation of electrochemical CO2 reduction to formate with subsequent microbial conversion to industrially relevant compounds. To this end, the electrochemical as well as the microbiological subprocesses are to be optimized from a process engineering point of view while being coordinated with each other to achieve the most energy- and carbon-efficient overall process possible. For this purpose, the components of the electrolysis cell, such as the gas diffusion electrode at which the CO2 reduction to formate takes place, as well as the electrolysis conditions, are being adapted at the DECHEMA Research Institute to establish a biocompatible drop-in electrolysis. Ultimately, the electrochemically produced formate should be suitable to use directly in a subsequent biotechnological step.


[1] M. Stöckl, S. Harms, I. Dinges, S. Dimitrova, D. Holtmann, From CO2 to Bioplastic – Coupling the Electrochemical CO2 Reduction with a Microbial Product Generation by Drop‐in Electrolysis, ChemSusChem 2020, 13, 4086-4093.


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Finanziert von der Europäischen Union – NextGenerationEU

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