No, I have no idea. I’m not an expert in chemistry or electric engineering.
SHIFT verzichtet auf den Einsatz des Konfliktminerals Coltan. Coltan
wurde und wird in Handys und Smartphones im Bereich der Tasten verbaut,
da es sich für die Herstellung von besonders kleinen, leistungsfähigen
Kondensatoren eignet.
“SHIFT goes without the use of the conflict mineral coltan. Coltan was and
will be built into mobile phones and smartphones in the key area as it is suitable
for the production of very small, high-performance capacitors.”
They might just use bigger capacitors?
From what I’ve read now, it is also possible to get the precious tantalum from other sources than coltan.