At 08:59 AM 9/15/2009, Michel Jullian wrote:
Silver would be eaten away and would plate out onto the cathode, so this anode too would have to be Pt or Pt plated I guess. Which makes me wonder, Pd is close to Pt chemically, so why would it anodically dissolve in this particular electrolyte if Pt doesn't ? I know Pd does anodically dissolve in (at last some) acidic electrolytes, but in LiCl, I have no idea. And if it does, will it dissolve at a sufficiently high rate? Help, is there an electrochemist on the plane?
About the silver, of course. Yes, the anode must be platinum, or plated platinum. Plating would allow sturdier anodes and cathodes than using wire or foil, might not raise cost.... increase surface area by plating onto mesh, perhaps.
Reading a Szpak paper, they took a piezoelectric sensor and plated it to form a substrate (silver?) and then ran codep on top of that. They used a Croy digital oscilloscope to capture the sensor data, but the sample rate was fairly low, this could be cheaply captured.
Now, I've asked before with no response. Has anyone looked for visible light emission with a microscope from an operating electrode? I think that common CCD image sensors will detect IR, but not with the kind of sensitivity that was used in the SPAWAR published images. If we are looking at an active surface, what will we see in the visible and near-IR?
