Bipolar plates (BPP) comparison
Typical properties | Extruded BPP | Injection molded BPP | Hot-pressed BPP | SGL Carbon BPP |
---|---|---|---|---|
Explanation | Polymer composite | Polymer composite | Polymer composite | Expanded graphite/ polymer composites SIGRACELL TF6 and PV15 |
Process ability | +++ | ++ | + | +++ |
Electrical conductivity | ○ | + | ++ | ++ |
Surface tolerance | - | ○ | - | ++ |
Costs | +++ | + | ○ | ○ |