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Print 9 comment(s) - last by puter_geek_01.. on Jul 8 at 12:54 PM

Platinum is much too expensive and limited

Metal-air batteries and fuel cells for electric vehicles could get a performance boost from a new development by Korean researchers. 

Researchers from Ulsan National Institute of Science and Technology (UNIST) in South Korea -- led by Prof. Jaephil Cho, dean of the Interdisciplinary School of Green Energy of UNIST -- have developed a bio-inspired composite electrocatalyst that could replace platinum

Right now, platinum and its alloy are key catalysts for activation of the oxygen reduction reaction that increases performance of fuel cells and metal-air batteries, but both are not easily used due to their high cost and limited availability. 

That's why Cho and his team came up with a less-expensive and easily-produced catalyst: a bio-inspired FePc-Py-CNTs catalyst.


This development introduces a a new class of ORR catalysts using pyridine-functionalized carbon nanotubes (CNTs). These CNTs, which provide an easy route for quick electron transfer from the current collector to the ORR active sites, hold FePc molecules securely and provide the axial ligand for the iron center.

“I believe the FePc-Py-CNTs catalysts is a technologically promising candidate for practical applications in metal-air batteries and alkaline fuel cells,” said Cho. “The origin of the enhanced performance for this bio-inspired catalysts in aromatic macrocycle, provides important insight into rational design of metal macrocycles catalysts for other applications such as solar harvesting and catalysts for other redox reactions.”

It looks like Cho may be right. The FePc-Py-CNTs catalyst is capable of a longer cycle life than unpyrilysed metal macrocycles catalysts by about 1,000+ cycles in tests.

The team also proved that the new catalyst offered higher electrocatalytic activity for oxygen reduction than platinum/C catalysts.

This could be a great find for automakers that are set on making strides in fuel cell technology for their vehicles. For instance, General Motors (GM) and Honda announced just this week that they'd team up to commercialize fuel cell technology by 2020. 

Source: Ulsan National Institute of Science and Technology



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Bleh. We have heard it all a hundred times.
By retrospooty on 7/4/2013 1:55:38 PM , Rating: 0
Get it working so it's more efficient than what it is replacing in a real product that is affordable and then call it news.




RE: Bleh. We have heard it all a hundred times.
By kaborka on 7/4/2013 3:09:13 PM , Rating: 2
Lighten up, dude -- R&D *is* news. One of the reasons I come to DT.


By retrospooty on 7/4/2013 10:27:30 PM , Rating: 3
R&D is great, but we have had smoke blow up our wazoos about fuel cells for a decade and so for none of it is commercially viable. Not even close. I will believe it when its on the market.


RE: Bleh. We have heard it all a hundred times.
By Flunk on 7/4/2013 3:21:44 PM , Rating: 5
Technology news is all about research, I think you need a site about consumer products.


By puter_geek_01 on 7/8/2013 12:54:55 PM , Rating: 2
quote:
Technology news is all about research, I think you need a site about consumer products.


There'd be nothing to read...


RE: Bleh. We have heard it all a hundred times.
By Rukkian on 7/5/2013 12:40:16 PM , Rating: 2
Yes, we know - unless an article denounces everything except the traditional ICE, you don't like it, however many of us come here for technology news, which includes R&D and potential breakthroughs. While not all potential breakthroughs end up being viable consumer products, does not mean they should not be reported about on a tech site.

If all this site reported on was products already produced, they would be a day late and a dollar short.


By retrospooty on 7/5/2013 1:33:51 PM , Rating: 2
"Yes, we know - unless an article denounces everything except the traditional ICE, you don't like it"

Where do you get that from? I have never said anything like that... Nor do I think it, nor was I making a comment on R&D reporting in general. What I was commenting on was "fuel cell" carrot that has been dangled in front of us for the past decade. A lot of promises and very little usable product.


RE: Bleh. We have heard it all a hundred times.
By Rukkian on 7/5/2013 4:52:37 PM , Rating: 2
I apologize, maybe I had you confused with one of the many that go on and on about how nothing will ever compare to an ice.

My main point was that I like to actually see news about potential breakthroughs (which this is). While it may never actually see a production floor, it is great to see progress happening.


By retrospooty on 7/5/2013 5:21:57 PM , Rating: 2
"I had you confused with one of the many that go on and on about how nothing will ever compare to an ice."

I know the type... For whatever reason, alot of people are really passionate about their gas ;)


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