Fuel cell system with improved humidifier

A fuel cell system comprising:

• a fuel cell stack comprising an anode and a cathode,
• a cathode supply means arranged for providing a cathode inlet with a gas comprising air and water,
• an air compressor arranged between the cathode supply means and the cathode,
• a first dosing device and a second dosing device, the first dosing device being configured to inject water upstream of the air compressor, and the second dosing device being configured to inject water downstream of the air compressor, and
• a heat exchanger arranged upstream of the air compressor, the heat exchanger being arranged to receive heat from a cooling circuit of the fuel cell stack and/or from a motor of the air compressor.