The hydrogen and
fuel cell center

Your Contact

Dipl.-Ing. Sebastian Brokamp

group leader stack technology
Department fuel cells and stacks

Tel.: +49-203-7598-4286

HT-PEM fuel cell stacks

Fuel cells with High Temperature Membranes (HT PEM)

ZBT high temperature PEM fuel cells can be operated in the temperature range between 130°C and 200°C and offer a number of potential advantages compared to low temperature PEM fuel cells, e.g., high CO tolerance, no need for humidification of reactant gases, simplified heat management of the fuel cell system. Since 2004 ZBT is developing and testing such HT-PEM Stack technologies for and together with industrial partners.

Main topics of additional R&D are related to material stabilities for all used components, heat management and internal media management as well as production issues.

HT-PEM Stacks < 1kW

HT PEM Stack

The standard low power setup is based on a fin based air cooling concept:

  • number of cells up to 36
  • 48 cm2 active area per cell
  • BASF Celtec P or others available
  • plates: high-conductive compound material, milled
  • forced air cooling (fan) via lateral fins
  • maximum operation temperature: 180 °C
  • single cell voltage monitoring: contacting included
  • hydrogen operation, reformat gas as option

HT-PEM Stacks > 1kW

1 kW HT-PEM Stack / liquid cooling

At higher power using the waste heat by means of liquid media is interesting for various applications.

Methods for integration of cooling circuits into the fuel cell stacks have been realised. Latest configuration uses integrated cooling architectures and standard  thermo oils: 

  • number of cells 24
  • 300 cm2 active area per cell
  • plates: high-conductive compound material, milled
  • forced liquid cooling 
  • maximum operation temperature: 180 °C
  • nominal power: 1,2 kW (Advent MEA)
  • hydrogen or reformat gas 

Alternative concepts for air cooling and integration of liquid cooling can be offered as well.

ZBT offers the joint development of materials, stacks and system layouts for different applications (portable, mobile and stationary), main research and service topics are:

Last update:  31.03.2020