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Author: Subject: Fuel Cell
plante1999
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[*] posted on 27-12-2011 at 16:42
Fuel Cell


Is there anybody that make fuels cells on SM? I tried make an new type of Fuel cell ,the urea fueled cell.

http://hclo3chem.weebly.com/methanol-fuel-cell.html

Zinc Air /aluminium Air / microbial fuel cell /Molten carbonate and phosphoric acid fuel are realy good device.




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White Yeti
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[*] posted on 27-12-2011 at 18:23


I never made fuel cells due to the prohibitive price of platinum catalysts and secrecy surrounding other, cheaper catalysts. I always wanted to get my hands on a hydrogen fuel cell so that I could test out a hydrogen storage system that looks very promising:
NH4HCO3 ---> CO2 +H2O +NH3
The fuel can be stored at room temperature as opposed to liquid ammonia.
Then again, I need a catalyst to split ammonia -.-

I made aluminium air batteries in the past, they work really well.




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plante1999
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[*] posted on 27-12-2011 at 18:41


Carbon/Cobalt oxide catalist are realy good oxidation catalyst for fuel cell, it can be made from activated charcoal/ char rope (See the video link for the process for making it), char rope is actualy glassy carbon fiber) and impregnate them with solube cobalt salt and them electrolise them as the anode , it will make Co2O3/C based catalist . I worked on urea sol. because it decompose to NH3 and CO2 in H2O. An than NH3 is oxidised

(NH2)2CO + H20 -) CO2 + 2NH3

Iron air fuel cell is also promising...but less than the zinc one.

http://www.youtube.com/watch?v=kcscWBgTijk
http://www.youtube.com/watch?v=jjUDMbVl3Bg




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White Yeti
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[*] posted on 27-12-2011 at 19:55


You are describing a process that works theoretically, but I can assure you that catalysts are a pain to get to work properly in real life.

Quote: Originally posted by plante1999  
Zinc Air /aluminium Air / microbial fuel cell /Molten carbonate and phosphoric acid fuel are realy good device.


Here are pictures of aluminium air "fuel cells" that I made. I consider them more as primary cells more than fuel cells, but they use oxygen from the air to work, so they could technically be both.




IMG_0134.jpg - 263kB IMG_0185.jpg - 143kB IMG_0187.jpg - 80kB(two cells powering 5 IR LEDs)

~.8V per cell with a SC current of ~50mA.




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symboom
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[*] posted on 27-12-2011 at 20:26


i am with you on that plante 1999 there must be a diy fuel cell that can maybe generate more power. that can be easily built
like maybe a solid oxide fuel cell SOFC because you can use any hydrocarbon.\ any suggestions
none on youtube


[Edited on 28-12-2011 by symboom]
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plante1999
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[*] posted on 28-12-2011 at 08:26


Solid oxide fuel cell are contamined with CO2... If we all work together I suppose we can make an powerfull Fuel cell that doesn require platinum based catalist.

Fuel that are interressing:

-)Urea (NH2)2CO
Iron Fe
Zinc Zn
Hydrocarbon CH2n+2




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Geko127
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[*] posted on 28-4-2012 at 03:49


What about borohydride fuel cells



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White Yeti
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[*] posted on 28-4-2012 at 05:55


Epic thread bump, exactly 4 months!

How about a fuel cell that looks a little like this:
C2O4-2 + S2O8-2 → 2CO2 + 2SO4-2

This can be a fuel cell if the oxalate is fed continuously and the sulphate is somehow reduced to sulfur or sulfur dioxide which can be removed.

Another way oxalate can be oxidised is if the cathode consists of an inert electrode immersed in a container of oxygenated water where this reaction would take place:
O2 + 2H2O + 4e- → 4OH- +0.40 V
With an overall reaction of:
2C2O4-2 +O2 + 2H2O → 4CO2 + 4OH-

Unfortunately the rate of the reaction is limited by the rate at which oxygen can diffuse into the cathode compartment. Therefore, the power output of this cell would be quite low.

Another potential problem would be how to get hold of some inert electrodes made of everyone's favourite metal, platinum. That's if carbon can't get the job done.




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Pyridinium
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[*] posted on 28-4-2012 at 08:39


Quote: Originally posted by White Yeti  


Another potential problem would be how to get hold of some inert electrodes made of everyone's favourite metal, platinum. That's if carbon can't get the job done.


I read an article that put it pretty aptly (can't remember name of it). If it went to platinum fuel cells on a large scale, the nations of the world would be in continual wars as this scarce resource became in even greater demand.

The non-platinum ones seem more appealing on that basis alone.
I say we keep our eye on activated carbon, with its incredibly high surface area. The biochar fuel cell! If someone invents it, I claim partial IP on that one. :D
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[*] posted on 28-4-2012 at 09:30


I have recently posted in Prepubs, if anyone's interested, an article I wrote about hydrogen fuel cells for my homework at school:)



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White Yeti
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[*] posted on 28-4-2012 at 09:51


Bahhh I don't have Microsoft publisher, can you re-upload in word by any chance?



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Hexavalent
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[*] posted on 28-4-2012 at 10:48


Publisher keeps telling me that is doesn't recognise either of the versions of Word I have installed (the 2003 and 2007 versions), so I've left the original .pub link attached but just edited the post to include the text of the article.



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Morgan
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[*] posted on 19-12-2013 at 17:24


Well it starts up quickly. In another clip he refers to it as a methanol/air battery.
The Direct Methanol Fuel Cell
http://www.youtube.com/watch?v=rxFhtpF0FGk

Tidbit
Role of Hydrous Ruthenium Oxide in Pt−Ru Direct Methanol Fuel Cell Anode Electrocatalysts:  The Importance of Mixed Electron/Proton Conductivity
http://pubs.acs.org/doi/abs/10.1021/la9807863?journalCode=la...



[Edited on 20-12-2013 by Morgan]
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