I wrote:
> That's bad because it reduces surface area. This is what caused Arata's > pure Pd black cells to stop working after a while. > I mean the Double Structured (DS) cathodes. Those things were crammed full of Pd black, according to McKubre. I think he said that. Cramming them full ensured good contact with the walls. The walls were also Pd, used as a hydrogen filter. Some people suspected the Pd in the wall was reacting, along with the Pd black. - Jed
