If the powder sinters, I suppose: That's good because it is what makes the powder stick to the wall.
That's bad because it reduces surface area. This is what caused Arata's pure Pd black cells to stop working after a while. Takahashi said it was not the high temperature but rather the chemical action of hydrogen on the metal that caused the particles to stick together. I guess when they open the cell they have to scrape out the powder. Question: assuming it really is 0.3 g, what is the likely volume? Nowhere near enough to fill the cylinder. Why such a large cylinder? Maybe because that's what he has in stock. - Jed
