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Author Topic: Intercalated graphite carries a resting voltage without giving a charge.  (Read 9117 times)

Jimboot

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Re: Intercalated graphite carries a resting voltage without giving a charge.
« Reply #30 on: December 28, 2019, 07:58:49 AM »
Made a new cell of ground up material. Wrapped in tissue a few drops of salt water. Then clampep. 800mv over the 3k resistor same waveform but the scope voltage is 10x whereas the dmm is still 1.1? Wtf also the earth spikes have phase shifted

kajunbee

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Re: Intercalated graphite carries a resting voltage without giving a charge.
« Reply #31 on: December 28, 2019, 09:50:03 AM »
In all my battery experiments at home I use graphite cathode and aluminum anode. Depending on the electrolyte and its strength will effect its performance. The highest voltage I was able to get was 2.8 volts. This was by replicating a YouTuber named Cayrex2. The video I believe was "bi-functional hydrogel aluminum battery".

kajunbee

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Re: Intercalated graphite carries a resting voltage without giving a charge.
« Reply #32 on: December 28, 2019, 10:14:25 AM »
When you wrap the tin foil do you put shiny or dull side facing out. If you put shiny side facing out does it start to dull over time. Or should I say faster than it normally would.

kajunbee

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Re: Intercalated graphite carries a resting voltage without giving a charge.
« Reply #33 on: December 28, 2019, 10:51:53 AM »
Smokys comments have forced me to rethink everything I have done up too this point.

sm0ky2

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Re: Intercalated graphite carries a resting voltage without giving a charge.
« Reply #34 on: December 28, 2019, 03:45:44 PM »
Kaj,


Important thing to know about aluminum foil
(or any pressed oxidizing metal foil /thin sheet)


The machines that do this run dual-layers of material
against each other then press them.
the shiny side was facing the roller and has a very thick oxide layer
the dull side was al-al through the press and the oxide layer is very thin


Always put the dull side in the battery. This surface can make a much
better contact with the electrolyte.








Jim,
you see from that circuit now what I was talking about?
The 1MOhm resistor in the DMM can feed that V back the other way
I’m pretty sure the 1V is the drop from 5v to 4v internally
the resistors are set up for multiple pathways and the IC can bleed
so while you are measuring outside, the inside sends the V through
the lead loop, and picks it up as a measurement.


With the analog meter it has to actually BE there to move the needle.


The scope shot is interesting.
Seems like it is able to pick up the signals better when it’s smaller pieces?
I know this isn’t about earth currents, but your “antenna” got an upgrade


sm0ky2

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Re: Intercalated graphite carries a resting voltage without giving a charge.
« Reply #35 on: December 28, 2019, 05:44:29 PM »
Next question:


Is the ground wire a true earth ground?
Or tied to your house ground which then goes to earth?
On the house ground you can get a signal from each appliance
on the line with all the tv channels and the telluric


Not the current the device is using, that all goes back to the line
But a mirrored feedback of much lower intensity will appear to ground.
By turning on/off stuff in your house you can isolate individual spikes
The house currents don’t normally spike like that. They hang out near
the 0 line as “fuzz”. Cable signals can be the largest of those because
of so many underground lines pushing a lot of power from the tv station.
But if you wanted to isolate your house (and any airborne signals )
you can run a piece of coax straight to a rod in the earth and make an
independent ground for the experiment.


Then you will only have the feedback signals from the earth.


I’m wondering if the (avg) particle size is acting like a receiver to certain
of those spikes, amplifying them somehow?
You should run many tests and collect a lot of comparable data.
Maybe multiple identical cells side by side
narrow down what changes cause what effects etc.


Wishing I had a kiln right now.....
Highest I can go is about 700F....
You’re pushing 1300 degrees!!


Fire pits don’t work cause you can’t really control the temp
so I can only sit back and observe atm

kajunbee

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Re: Intercalated graphite carries a resting voltage without giving a charge.
« Reply #36 on: December 28, 2019, 06:22:59 PM »
I have a cheap POS meter and thought maybe I was getting false readings also. I borrowed a Simpson 260 from the port captain so I could do a comparison , and these are some measurements I took. I'll have to investigate further with graphite once I get home. I have several new materials on order and I'm chomping at the bit to get started. In a couple weeks maybe I'll have something worthwhile to report.

kajunbee

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Re: Intercalated graphite carries a resting voltage without giving a charge.
« Reply #37 on: December 28, 2019, 06:31:17 PM »
Smoky , do all DMM have that issue or is it just the cheaper grades.

sm0ky2

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Re: Intercalated graphite carries a resting voltage without giving a charge.
« Reply #38 on: December 28, 2019, 09:02:49 PM »
More expensive ones have better circuits so the problem may be
less of a hassle. Some even have a button that “zero’s” it out.
But yes, in short, the method of measuring voltage with a DMM
can put a charge on the circuit unintentionally.
Sometimes they will charge a capacitor while you’re trying to measure it.


Yours looks pretty accurate looking at your log.
0.1v is about as accurate as you can expect a DMM to be.


Jimboot

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Re: Intercalated graphite carries a resting voltage without giving a charge.
« Reply #39 on: December 29, 2019, 01:44:30 AM »
Next question:


Is the ground wire a true earth ground?
Or tied to your house ground which then goes to earth?
On the house ground you can get a signal from each appliance
on the line with all the tv channels and the telluric


Not the current the device is using, that all goes back to the line
But a mirrored feedback of much lower intensity will appear to ground.
By turning on/off stuff in your house you can isolate individual spikes
The house currents don’t normally spike like that. They hang out near
the 0 line as “fuzz”. Cable signals can be the largest of those because
of so many underground lines pushing a lot of power from the tv station.
But if you wanted to isolate your house (and any airborne signals )
you can run a piece of coax straight to a rod in the earth and make an
independent ground for the experiment.


Then you will only have the feedback signals from the earth.


I’m wondering if the (avg) particle size is acting like a receiver to certain
of those spikes, amplifying them somehow?
You should run many tests and collect a lot of comparable data.
Maybe multiple identical cells side by side
narrow down what changes cause what effects etc.


Wishing I had a kiln right now.....
Highest I can go is about 700F....
You’re pushing 1300 degrees!!


Fire pits don’t work cause you can’t really control the temp
so I can only sit back and observe atm
Thanks Smoky, I'll put my own ground in. Been meaning to do it for a while for these sorts of tests. The Kiln is my wifes that she uses for silversmithing. Robert Murray Smith read and others papers recommend this method. I think simpler identical cells and comparison is a good idea. I'll get back to you :) I started this thread at overunityresearch. 

Jimboot

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Re: Intercalated graphite carries a resting voltage without giving a charge.
« Reply #40 on: December 29, 2019, 10:58:07 AM »
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

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Re: Intercalated graphite carries a resting voltage without giving a charge.
« Reply #41 on: December 29, 2019, 02:32:55 PM »
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

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Re: Intercalated graphite carries a resting voltage without giving a charge.
« Reply #42 on: December 30, 2019, 01:05:41 AM »
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

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Re: Intercalated graphite carries a resting voltage without giving a charge.
« Reply #43 on: December 31, 2019, 01:04:52 PM »
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.