Graphite bipolar plates are the key structural parts inside PEM fuel cell stacks. They separate anode and cathode gases, collect electric current, distribute hydrogen and air through precision flow channels, and remove excess heat and condensed water during electrochemical reaction. Made from high-density isostatic graphite, these plates deliver stable performance under long-term humid and acidic working conditions.

Key Advantages

High electrical & thermal conductivity: Low contact resistance for efficient power output and fast heat dissipation.

Outstanding corrosion resistance: Chemically inert against acidic water environment inside fuel cells, no rusting like metal plates.

Good gas tightness: Controlled porosity to prevent hydrogen cross-leakage after impregnation sealing treatment.

Custom flow field machining: Straight channels, serpentine channels and interdigitated flow patterns available according to stack design.

Applications

PEM hydrogen fuel cells, vanadium redox flow batteries, water electrolysis hydrogen production equipment, stationary backup power systems. Dongguan Jiecheng Graphite, established in 2003, provides precision CNC machining of graphite bipolar plates with custom flow channel patterns and dimension inspection reports.