Author Topic: Intercalated graphite carries a resting voltage without giving a charge. (Read 9176 times)

Jimboot · « **on:** December 24, 2019, 11:29:23 PM »

hi all I’d mad some intercalated graphite recently using fecl3 and some plant material. I used Robert Murray smith method of soaking in fecl3 then into the kiln slowly ramped up to 750c . The device on my bench measures just over a volt and is dry. Not a chemical reaction. Can post scope shots and videos if anyone wants to take a look. It does not seem like normal behavior though. MERRY CHRISTMAS!

sm0ky2 · « **Reply #1 on:** December 25, 2019, 05:11:32 AM »

Hook a bunch of them in series and parallel
See what happens

By the way, is your ground reference the earth?
Or is your scope isolated?

During the Cold War ionic carbon was thought to be a
potential source of a room temperature superconductor.
Many governments enlisted the scientists of the world to
try and make one.
They are still trying today......

Jimboot · « **Reply #2 on:** December 25, 2019, 10:01:35 AM »

I’ve tried both more interesting results with the house ground https://youtu.be/mfo_ITGSjh8 you may recognise the material given your handle. Check your pm at our.

Jimboot · « **Reply #3 on:** December 25, 2019, 12:49:42 PM »

Here's a quick and dirty conductivity test https://www.youtube.com/watch?v=mGU5Aw7hKKE

kajunbee · « **Reply #4 on:** December 25, 2019, 02:17:09 PM »

If you have your meter connected between anode and cathode you are seeing galvanic voltage. You won't be able to discharge it like a capacitor. I am also working on a rechargeable aluminum ion battery. I've only been at it a few weeks so I've still much to learn. Looking forward to seeing your further progress. Ps: The oxide layer that forms on aluminum is a killer. Saltwater will not readily strip it away.

sm0ky2 · « **Reply #5 on:** December 25, 2019, 04:36:19 PM »

Try an analog meter
some of those dmm’s can send V in reverse
because of the way the internal resistance circuits are designed.

The voltage climbing when you connect the meter may be a clue.

sm0ky2 · « **Reply #6 on:** December 25, 2019, 04:54:24 PM »

Nice work making it conductive.
In theory, it is possible for Cl Ions to have been trapped
inside the carbon lattice
however it is a higher probability that some iron was not
able to fully oxidize, and therefore would also be trapped
inside the carbon structure.
This will of course depend on the cell structure of your carbon source
and how it is contained during the thermal processing.

I have not yet had that much success, but was on a similar path about a year ago.

I got distracted into reactive nanocarbons because they act like they’re alive.

sm0ky2 · « **Reply #7 on:** December 25, 2019, 05:02:25 PM »

Acetates were a little easier for me to work with
my goal was entrapping ionic metallic acetates in the lattice.

Equally as hazardous but lower working temps.
in a hot liquid crystallization process, it is possible to
bond a metallic salt directly to the carbon while it is forming
allowing the growth of a complex crystalline interface

Most of my experiments failed because I was using the wrong
type of crystal and the carbon wasn’t able to out gas properly

Jimboot · « **Reply #8 on:** December 25, 2019, 09:46:52 PM »

Quote from: kajunbee on December 25, 2019, 02:17:09 PM

If you have your meter connected between anode and cathode you are seeing galvanic voltage. You won't be able to discharge it like a capacitor. I am also working on a rechargeable aluminum ion battery. I've only been at it a few weeks so I've still much to learn. Looking forward to seeing your further progress. Ps: The oxide layer that forms on aluminum is a killer. Saltwater will not readily strip it away.

there is no corrosion. There is no chemical reaction, the cell is dry

kajunbee · « **Reply #9 on:** December 26, 2019, 02:16:55 AM »

I saturated a paper towel in saltwater and then dried it in microwave. I placed it between a 2"x2" piece of copper and aluminum. The voltage I measured was near about the same as with wet separator. As a control I used a dry towel that had not been soaked in saltwater and still measured a voltage. Now for the stick in the spokes. I removed the copper and touched one probe to aluminum and the other to wet separator and also measured voltage. Lay the probe tip on its side so as not to penetrate the towel. The readings varied between.5 volts and .7 volts on all test. Maybe you can try this to see if you get similar results. i have suspicions of what's going on, but can't be certain.

sm0ky2 · « **Reply #10 on:** December 26, 2019, 06:34:36 AM »

Graphite electrodes could help resolve that type of conjecture

kajunbee · « **Reply #11 on:** December 26, 2019, 09:04:15 AM »

Smoky2, I can only guess that your suggestion to use graphite is to point out something I'm overlooking. But instead of the teacher giving the answer, your going to make me work for it. Since I'm at work I can only test with aluminum and copper. I did not mention that I had ran across this before. I can't remember if I had the separator only on aluminum or a graphite electrode. Given that I measured around 1.62 volts I believe the separator was on aluminum. What I did not realize at first was that my hand was touching the bench top. When I lifted my hand I could not read a voltage. Now the test I did previously I was still able to measure voltage even though no other part of my body was grounded.

Jimboot · « **Reply #12 on:** December 26, 2019, 01:22:27 PM »

One probe on the graphite one on the al. I thought at first the same as you. I wanted to find evidence of it so I could dismiss it and move on to th grapene process. Intercalated graphite is weird, smoky comment about these thing behaving like their alive rings true with this material

kajunbee · « **Reply #13 on:** December 26, 2019, 01:28:14 PM »

I haven't made it to the level that your at with processing the material. But I have to say that this thread has made me realize many of my mistakes and clear up some misconceptions that I had. Hopefully smoky can shed some more light on things.

Jimboot · « **Reply #14 on:** December 26, 2019, 01:43:26 PM »

Quote from: kajunbee on December 26, 2019, 02:16:55 AM

I saturated a paper towel in saltwater and then dried it in microwave. I placed it between a 2"x2" piece of copper and aluminum. The voltage I measured was near about the same as with wet separator. As a control I used a dry towel that had not been soaked in saltwater and still measured a voltage. Now for the stick in the spokes. I removed the copper and touched one probe to aluminum and the other to wet separator and also measured voltage. Lay the probe tip on its side so as not to penetrate the towel. The readings varied between.5 volts and .7 volts on all test. Maybe you can try this to see if you get similar results. i have suspicions of what's going on, but can't be certain.

did you try it with a dry separator? I’d be be interested in the results. Might help explain it away so I could get on with my life 🙄 so everything is dry for a couple of weeks now,in the shed in an Aussie summer. I was then thinking it was the meter doing something but tested it on the scope and the opposite was true. The dmm was attenuating the voltage. It’s doing my head in. I’m trying to find the gremlin. So all feedback appreciated

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Author Topic: Intercalated graphite carries a resting voltage without giving a charge. (Read 9176 times)

Jimboot

Intercalated graphite carries a resting voltage without giving a charge.

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