Examination of fuel cell temperature limits

In the energy strategy of the European Union, renewable energy sources play an increasingly important role every year, and in parallel, hydrogen, primarily as an energy storage solution. Synchronously with this, the Hungarian sectoral goals also include the increase of hydrogen capacities. One way to use hydrogen is to use fuel cells. According to theoretical calculations, the reaction is aided by temperature, but in practice, this has several limitations, the most severe of which is the change in the state of the membrane. In our research, we use the effect of temperature on membrane conductivity to explain why, according to our measurements, the efficiency of the cell does not increase with temperature in all cases.