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selcol cells

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New battery technology

New battery technology

set to revolutionise model flying - 1/4/11

Rob01/04/2011 10:48:20
232 forum posts
Are the voltages quoted AC or DC ?? Also can the cells be charged by putting them into direct sunlight.??

Edited By Rob on 01/04/2011 10:49:07

Ultymate01/04/2011 10:55:22
1699 forum posts
62 photos
1/4/2011 MMMmmmm I wonder ?
Plummet01/04/2011 11:09:11
1394 forum posts
41 photos
Mmmmm. Selenium. Good for dandruff as well I believe.
A.A. Barry01/04/2011 11:16:55
1922 forum posts
186 photos
Great news that is
Tim Hooper01/04/2011 11:36:25
2859 forum posts
2363 photos
Wow! These new cells sound great!
Do they get heavier when charging due to all those electrons being forced in?
ken anderson.01/04/2011 11:40:39
8432 forum posts
772 photos
seems funny they are anounced on april 1st...
 ken anderson  ne..1.

Edited By ken anderson. on 01/04/2011 11:42:32

Chris Bott - Moderator01/04/2011 11:41:23
6655 forum posts
1381 photos
1 articles
Amazing the technology coming out today, Jessops have emailed me just this morning about their new "Scent Cam 1DS". Apparently the prints project the scent of the scene in the photograph.
Great for summer meadows and spring flowers, a few scenes sprang straight to mind that oddly they don't mention....
Simon Chaddock01/04/2011 11:47:43
5435 forum posts
2847 photos
No mention of cost!
If history is anything to go by they will be:
1. Very expensive per Watt hour for many years to come
2. Very tempremental
3. Pretty dangerous
Apart from that - absolutely fabulous
Russ P01/04/2011 11:48:32
137 forum posts
10 photos
APRIL FOOL???????????
Phil May01/04/2011 11:52:27
1520 forum posts
154 photos
Must be
Pete B - Moderator01/04/2011 12:18:10
7578 forum posts
732 photos
Hey, don't be so quick to deride this - I can't find the link now but a paper was published by a biologist some time back where it had been found that glow-worms had a sac of colloidal selenium in the front of the thorax.
It was found that, by laying on their backs during the day after emerging from cover, enough energy could accumulate to power the glow well into the night.

That seems to explain why glow-worms have, unusually, a disruptive-type camouflage pattern on their undersides:
One has to assume that the scientists have found a large-scale production method for the selenium, as harvesting glow worms would be rather labour-intensive - as well as being not very green.......
It's nice to see we can still learn something from nature!

Biggles' Elder Brother - Moderator01/04/2011 12:53:04
15748 forum posts
1460 photos
Elemental selenium is rare - but it is a natural semi-conductor unlike silicon which has to be doped to exhibit true semiconductor qualities.
But I think it is much rarer than even Lithium - so expensive in that form.
Of course as this is a colloid we don't know how much selenium is actually in it. It might only be trace amounts. Interestingly they don't tell us what the other components in the colloid are - probably secret.
I reckon if its viable though it could even convert the last of the oily hands to at least dabbling with electric flight. I bet 'Timbo the trailblazer' will be the first person on here with one of these.
Chris Bott - Moderator01/04/2011 12:56:28
6655 forum posts
1381 photos
1 articles
I have a tub of colloidal silica and some dope, does that mean I can make my own?
Biggles' Elder Brother - Moderator01/04/2011 13:01:01
15748 forum posts
1460 photos
No Chris. Silica is silicon oxide and it isn't a semiconductor so it wouldn't work.
But out of interest what exactly are the ligands in your colloid? I'm not familar with colloidal silica - in fact I've never heard of silicon in the base ligand of any colloid. I stand to be corrected by any chemists on here on that of course.

Edited By Biggles' Elder Brother - Moderator on 01/04/2011 13:01:43

Chris Bott - Moderator01/04/2011 13:08:01
6655 forum posts
1381 photos
1 articles
Lol. If I knew that BEB I'd be as clever as you, well, probably not.
What I have is similar to this Colloidal Silica
All I know is that it's a very fine powder that can be mixed with various two part resins to make thick non runny fillets etc. Useful stuff.

Edited By Chris Bott on 01/04/2011 13:08:17

Klippy01/04/2011 13:21:38
753 forum posts
13 photos
Nice try David, would have been so nice, the end to our, and the worlds storage capacity problems.
To the others, If you Google 'Selcol Cells' you will find that only model flying carried the story in the english speaking world. Plus, 25.2volts for a single cell, that's huge electrical difference for 2 substances, the Chemists among us should be able to work out what the other substance in the cell would have to be.
Biggles' Elder Brother - Moderator01/04/2011 13:25:25
15748 forum posts
1460 photos
I've a feeling that this could be the kind of physics behind it - it would fit with the referneces to photo-electric properties. A colloidal soultion of this substance would have some very interesting properties.
Simon K 301/04/2011 13:50:57
96 forum posts
51 photos

Almost as nice as this one on

New Micro F3A announcement!

Edited By Simon K 3 on 01/04/2011 13:51:22

Tim Mackey01/04/2011 14:22:55
20919 forum posts
304 photos
15 articles
There's a few born every minute eh
A.A. Barry01/04/2011 14:30:49
1922 forum posts
186 photos
Well the way I remmber about "april fools" jokes was it was supposed to stop after miday

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