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E-fuels, produced from CO2 using renewable electricity, currently suffer from low energy efficiency, hence high energy demand, related high cost and are therefore not yet produced at industrial scale. To be commercially viable, e-fuels production pathways require the availability of vast amounts of low-cost electricity. The Horizon 2020 project EcoFuel, with the aim of overcoming these deficiencies, develops and demonstrates a novel process chain that significantly improves the energy efficiency for production of synthetic fuel out of CO2 and water using renewable energy. The process chain comprises a) the supply of CO2 from the atmosphere via a novel direct air capture (DAC) approach, b) direct electro-catalytic reduction of CO2 to C2/C3 hydrocarbons at close to ambient temperatures, and c) thermo-catalytic liquefaction of alkenes, upgrading and fractionation into transport fuels. The direct electro-catalytic CO2 reduction to hydrocarbons offers greatly enhanced efficiency potentials compared to Power-to-X technologies downstream of water electrolysis and at the same time, reduces process pathway steps. Overarching objectives of EcoFuel are to reduce primary energy demand, to enhance resource and cost efficiency of production, minimize the environmental footprint of the process, and to demonstrate the ecological and economic advantage.

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Project EcoFuel: Renewable Electricity-Based, Cyclic and Economic Production of Fuel

  • 会议论文

  • 出版模式：

    开放获取

  • 发表日期：

    2025年

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  • Johann Bachler,
  • Kerstin Wiesner-Fleischer,
  • Maximilian Fleischer,
  • Remigiusz Pastusiak,
  • Elfriede Simon,
  • Aleksander Makaruk,
  • Michael Filippi,
  • Tim Möller,
  • Wen Ju,
  • Peter Strasser,
  • Elena C. Corbos,
  • Toby Hodges,
  • Joost Smith,
  • Christian Kortus,
  • Thomas Sacher,
  • Nathalie Cros,
  • Ferdinand Vogelgsang,
  • Lénárd-István Csepei,
  • Arne Roth

摘要

E-fuels, produced from CO2 using renewable electricity, currently suffer from low energy efficiency, hence high energy demand, related high cost and are therefore not yet produced at industrial scale. To be commercially viable, e-fuels production pathways require the availability of vast amounts of low-cost electricity. The Horizon 2020 project EcoFuel, with the aim of overcoming these deficiencies, develops and demonstrates a novel process chain that significantly improves the energy efficiency for production of synthetic fuel out of CO2 and water using renewable energy. The process chain comprises a) the supply of CO2 from the atmosphere via a novel direct air capture (DAC) approach, b) direct electro-catalytic reduction of CO2 to C2/C3 hydrocarbons at close to ambient temperatures, and c) thermo-catalytic liquefaction of alkenes, upgrading and fractionation into transport fuels. The direct electro-catalytic CO2 reduction to hydrocarbons offers greatly enhanced efficiency potentials compared to Power-to-X technologies downstream of water electrolysis and at the same time, reduces process pathway steps. Overarching objectives of EcoFuel are to reduce primary energy demand, to enhance resource and cost efficiency of production, minimize the environmental footprint of the process, and to demonstrate the ecological and economic advantage.