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Home > New energy graphite materials > Graphite bipolar
Density | 1.90 g/cm³ |
Resistivity | ≤12 μƱm |
Flexural Strength | ≥65 MPa |
Compressive Strength | ≥130 MPa |
Touch resistance | ≤5㏁.㎠ |
Working temperature | -40--300℃ |
Shore Hardnesse | 75HSD |
Thickness | 0.5 single side 0.8 double side |
Porosity | 0 |
Fuel cell graphite bipolar plate core technology
1、Special sealing process and exclusive formula graphite modifer, to ensure the working condition of more than 20,000 hours of zero leakage.
2、Surface special processing technology, ensure contact resistance & LT, ≤5m㏁.㎠.
3、Exclusive design and development of large area bipolar plate, the power up greatly.
4、Light Milling process, plate thickness can be 0.5mm(single panel)0.8mm(double panel).
Applications:
The main uses of graphite bipolar plates include providing a reaction surface for electrochemical reactions, providing electron transfer channels, enhancing corrosion resistance, improving battery performance, and separating fuel from oxidants, collecting and conducting current, ensuring uniform temperature distribution of the battery stack, and achieving heat dissipation.
Graphite bipolar plates are an electrode material composed of graphite and a variety of additives, which are widely used in electrochemical cells, especially in batteries in the field of hydrogen energy such as fuel cells and electrolyzers. Its main functions include:
Provide a reaction surface for electrochemical reactions: Graphite bipolar plates provide sufficient reaction surfaces on their surfaces to enhance electrochemical reactions and improve battery efficiency and performance.
Provide electron transfer channels: As electron transfer channels in electrochemical reactions, they transfer electrons to electrolytes through conductivity to achieve battery reactions.
Enhance corrosion resistance: Graphite bipolar plates have good corrosion resistance, can resist corrosion in electrochemical reactions, and extend the service life of batteries.
Improve battery performance: By changing its porosity, specific surface area, conductivity and other properties, the performance of the battery can be improved, and can be customized according to specific application scenarios.
Separate fuel and oxidant: In fuel cells, graphite bipolar plates separate fuel and oxidant, prevent gas permeation, and ensure the safe operation of the battery.
Collect and conduct current: With high conductivity, it can effectively collect and conduct current to ensure the normal operation of the battery.
Ensure that the temperature of the battery stack is evenly distributed and achieves heat dissipation effect: Through the design and processing of the flow channel, the fluid can be evenly distributed to the reaction layer of the electrode for electrochemical reaction, while ensuring that the reaction medium is evenly distributed throughout the electrode, ensuring that the temperature of the battery stack is evenly distributed and achieves heat dissipation effect.
Therefore, graphite bipolar plates are of great significance for electrochemical applications in the field of hydrogen energy and are key components in electrochemical devices such as fuel cells。