We have prepared our own bipolar plates to reduce stack cost and also to improve stack life time.
This new material was tested in a single cell.
We found that the cell resistance was slightly increased compared to commercially available graphite material.
However, the cost advantage and the degradation properties of the new material are very promising, which is why we continue to improve this material even further until we can use it in one of our stacks.
The manufacturing process is very important for the final properties of this material.
On the left a raw plate is depicted after initial production. On the right the plate was treated with compression molding after the initial production.
The plate on the right has a uniform thickness and presents a plane surface, which is necessary for the stack assembly.
ACKNOWLEDGEMENT:
This work was supported by the project: IPCEI_IE_FLOW_BESS_012021