Intercalated graphite carries a resting voltage without giving a charge.

[Jimboot]

ignore dmm & scope shots. They're rubbish. So Im just using the Analogue meter. Still get 500mv, working to get it higher or build cell in series. I'm also making a toroid from the material to run some tests with.

[kajunbee]

Jimboot, I didn't think to ask what you are trying to make. Is it a capacitor or a rechargeable battery. In my experiments I have been attempting to make a battery. I realize now that it's impossible with and aqueous electrolyte. All I will get is water electrolysis because as you already know it only requires a potential difference of 1.23 volts. Much lower than it would be for aluminum. But something else I've been missing is how I've been charging the cell. With electrolytic capacitors the insulation is a hard anodized layer. So if I understand the process correctly when I'm charging the cell I'm forming that oxide layer. But the electrolytes I've been using (naoh, koh) rapidly dissolve that oxide layer. This might explain why I can store charge with some electrolytes and not others. I'll have to do some more research to know for sure.

[Jimboot]

Hey Kajunbee, I'm in the middle of creating graphene from the intercalated graphite when I noticed a resting voltage without charging it. At the moment I'm trying to isolate the source of it. I made 2 cells last night for testing 500mv resting voltage 1v in series.

[Jimboot]

RMS got back to me. He tends to think it's an electrostatic or ambient temp changes etc. I tend to agree. I'll move on from this now. Thank you Kanjunbee & Smoky both for your help. A cell with around 450mv no load. Attached a 10k resistive load drops to 150 and bounces around.