Fuel cell with an improved effeciency for generating electric power

Device for generating electric power by means of a fuel cell, which is provided with a solid substance as electrolyte and which comprises:

• a fuel supply connection for supplying substantially gaseous fuel to the fuel cell;
• an air supply connection for supplying to the fuel cell a gas which is at least partially formed by oxygen;
• an air discharge connection for discharging from the fuel cell the part of the gas which is supplied via the air supply connection and not used in the fuel cell;
• and
• an outlet connection for discharging from the fuel cell the reaction products of the fuel cell,
• wherein the device comprises:
• a separating device connected to the outlet connection of the fuel cell for separating the combustible gases from the gases supplied via the outlet connection;
• and
• a supply device for supplying to the fuel supply connection the combustible gases coming from the separating device, wherein the separating device comprises a first separator connecting onto the outlet connection of the fuel cell for separating substantially only water from the gases coming from the outlet connection, wherein the separating device comprises a second separator connected downstream of the first separator for separating CO2 from the gases coming from the fuel cell, characterized in that the second separator comprises a condenser for separating CO2 by means of condensation from the gases coming from the fuel cell, and that a compressor is placed between the first separator and the second separator.