Graphite Plates
- Graphite plates perform crucial mechanical and electrical functions in fuel cells and electrolysers. A distinction is made between their role as bipolar plates within the stack and as end plates at its conclusion.
- Bipolar plates separate the individual cells from each other and at the same time connect them electrically in series.
GP-25-01-MP
Regular price:
€0.00
Graphite plate for 25 cm²
PIN flow field
for direct methanol operation
Monopolar
- Media distribution (flow field): Fine channels (flow fields) are milled or pressed into the graphite plates. These guide the reaction gases (hydrogen/oxygen) or water precisely to the membrane and remove reaction products such as water or heat.
- Electrical conductivity: Graphite serves as an efficient electrical conductor that transports the electrons generated in the cells with minimal resistance.
- Corrosion resistance: Unlike metal plates, graphite plates are extremely resistant to the chemically aggressive environment (acids/moisture) inside the cell. This makes them particularly durable and low-maintenance.
- In PEM electrolysis, graphite plates are increasingly being researched and used as a cost-effective and robust alternative to expensive coated titanium plates. They enable efficient current conduction during water splitting and contribute to further reducing the system costs for the production of green hydrogen in 2026.
Advantages of graphite summarized:
- Chemically inert: No corrosion when in contact with process media.
- Low weight: Advantageous for mobile applications.
- Thermal conductivity: Supports effective temperature management in the stack.