Bac2 offering bipolar plates ready for high-temperature PEM fuel cells

UK-based fuel cell materials and components developer Bac2 has extended the family of products made from its ElectroPhen™ conductive polymer to include bipolar plates for high-temperature PEM fuel cells. The new plates – unveiled at the recent Hannover Trade Fair in Germany – are mechanically and electrically stable at over 200°C.

Traditional bipolar plates for fuel cells have to be machined to create the channels through which fuel, air and water vapour flow. ElectroPhen from Bac2 is an electrically conductive thermoset material, made from readily available bulk constituents, which can be compression-moulded and cured at room temperature.

Bipolar plates based on this material do not need further machining, so they can be mass-produced quickly and economically. High-temperature versions are subject to a proprietary conditioning process, but this does not add significant cost or production time.

ElectroPhen is a unique, patented conductive polymer that requires relatively little loading with graphite to achieve the required conductivity for fuel cell plate applications. In addition to offering customized plates in high volumes, Bac2 markets blank plates that customers can machine for prototyping work before committing to the expense of mould tooling.

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Energy storage including Fuel cells