A Polymer Electrolyte Membrane (PEM) fuel cell is an electrochemical device that coverts the chemical energy of hydrogen into electrical energy and heat. The core part of a PEM fuel cell is the Membrane Electrode Assembly (MEA) where the electrochemical reaction takes place.

The operation of PEM fuel cells between 140-210 degC, referred to as HT-PEM, offers significant advantages compared to conventional PEM (65-80 degC) or even Solid Oxide Fuel Cells (650 degC). These benefits include:

  • Improved electrode reaction kinetics
  • High CO tolerance
  • No need for humidified reactants
  • Simplified balance of plant
  • Low cost systems
  • High quality heat
  • Ratio of electricity/heat generation ideally suited to residential duty cycle 
At Combined Energies we leverage 30 years combined experience in the design, development and integration of residential scale HT PEM fuel cell systems.