Pyrolytic Graphite Sheet (PGS) Thermal Management Approach in Fuel Cells

Global warming and the shortage of fossil fuels have renewed the global interests of the development of fuel cell technologies, especially the proton exchange membrane fuel cell (PEMFC). PolyU researchers developed the pyrolytic graphite sheet (PGS) heat spreader to cool down and discharge the waste heat of PEMFC effectively. The high thermal conductive PGS can be easily assembled in the PEMFC stack and miniaturize the cooling system. This PGS cooling PEMFC approach creates a low working temperature, fast reaction and quick response fuel cell stack, which has great potential in commercial portable electronic device applications, such as chargers and UPS (Uninterruptible Power System).