Fuel Cells-Energy Conversion and Storage SOEC SOFC e H2O or/and CO2 H2 or/and CO H2O or/and CO2 H2 or/and CO H2O+2eH Co-electrolysisC+ 2→CQ肚 Fischer-Tropsch CO+H→CmHn+HO 27Fuel Cells – Energy Conversion and Storage 27 - +  + 2 CO2 2e CO O - +  + 2 H2O 2e H2 O Co-electrolysis 2 Fischer–Tropsch CO + H2  CmHn + H O