This post will help you understand why you’d need flow fields and how to make them yourself from off-the-shelf printed circuit boards (PCBs). Table of Contents Why PCBs? Current collector and gas distribution In a PEMFC, the flow field plates generally fulfil two different purposes. One is to conduct the […]
Yearly Archives: 2023
21 posts
Learn more about the 3D printed end plates.
Sealings are used to prevent leaking of gases. Three types of sealing elements are used, with the most important being the flexible flat sealing element. The material used in the FDM-3D-printing process is the “Filaflex 70A” from the manufacturer “Recreus”, which is a highly flexible material.
We thought this would be easy: milling the conductor plates according to Burghard’s design to produce the flowfield and the open electrode. We gave a set of milling cutters to Frauke from the FabLab and were excited to receive the cut parts within the next few days. Instead, we received […]
Amazingly, our group is growing and so is our determination to bring the open fuel cell to the world. We are thus very happy that it did not need an awful lot of advertisement for people to express their interest if the OFC. Lotay Tshering (prime minister of Bhutan), Peter […]
So we’ve printed the pressure plates on the SLA printer at the Chair for Energy Technology. The next step will be somewhat more difficult: milling the conductor plates, i.e. the flowfield and open electrode. For this, Leander reached out to his friend Livia who joined us today for our OFC […]
Today, we met at the Chair of Energy Technology and showed Roland and Burghard the printed pressure plates. For the next hour we discussed the website structure and distributed the content creation responsibilities between us.
The morning after our last meeting, Leander started the SLA printing job for the first pressure plate. He invited me to come to the institute early afternoon when the print is finished. The plate looks really nice. However, we struggle to get it off the print bed. Leander tries with […]
This time we meet in the hall of the chair for energy technology. Roland is reminiscing. He did his diploma thesis in this hall 22 years ago and has hardly been here since. Opposite the laboratory work surface where he had built fuel cells back then, he finds a board […]
Two days ago I got a nasty cold and since then spent a lot of time in bed. Covid-19 negatively tested and equipped with a face mask and 500mg of Paracetamol, I manage to get to the university for this appointment – I didn’t want to miss it for anything […]