We have developed cost- effective graphite bipolar plates which requires the use of advanced bipolar plates with high electrical conductivity and good mechanical strength. It is refined by high-pressure forming, vacuum impregnation, and high-temperature heat treatment, our bipolar plate has the characteristics of wear resistance, temperature resistance, pressure resistance, corrosion resistance, creep resistance, oil-free self-lubrication, small expansion coefficient, and superior sealing performance.
We can machine the bipolar plates on both sides with flow fields, or machine single side or provide unmachined blank plates as well. All graphite plates could be machined as per your detailed design.
Technical parameters
| Index | Value |
| Material purity | ≥99.9% |
| Density | 1.8-2.0 g/cm³ |
| Flexural strength | ＞50MPa |
| Contact resistance | ≤6 mΩ·cm² |
| Operating temperature | -40℃~180℃ |
| Corrosion resistance | Immersed in 0.5M H₂SO₄ for 1000h, weight loss <0.1% |
| Minimum thickness | 0.8mm |
| Air tightness test | Pressurizing the cooling chamber by 1KG (0.1MPa), there is no leakage in the hydrogen chamber, oxygen chamber and outer chamber |
| Anti-knock performance test | The four edges of the plate are locked with a torque wrench under the condition of 13N.M, and the cooling chamber is pressurized with air pressure≥ 4.5kg (0.45MPa), the plate will not be stretched open for air leakage |
Features:
- Impermeable to gases ( hydrogen and oxygen)
- Ideal electrical conductivity
- A balance between conductivity, strength, size and weight
- Resistance to corrosion
- Easy to produce in bulk Features:
- Cost-effective
Ningbo VET Energy Technology Co., Ltd is a high-tech enterprise focusing on the development and production of high-end advanced materials, the materials and technology including graphite, silicon carbide, ceramics, surface treatment like SiC coating, TaC coating, glassy carbon coating, pyrolytic carbon coating, etc., these products are widely used in photovoltaic, semiconductor, new energy, metallurgy,etc.
Our technical team comes from top domestic research institutions, and have developed multiple patented technologies to ensure product performance and quality, can also provide customers with professional material solutions.
