Public Lecture-A Blueprint for New Fuel Cell Catalysts
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- Опубліковано 23 лип 2024
- Lecture Date: Tuesday, March 26th. Daniel Friebel, a SLAC associate staff scientist who studies chemical processes involving catalysts, delivered the March 26 SLAC Public Lecture, "A Blueprint for New Fuel Cell Catalysts."
Friebel's talk details how X-ray research at the Stanford Synchrotron Radiation Lightsource, coupled with sophisticated computations at SLAC's SUNCAT Center for Interface Science and Catalysis, are fostering a greater understanding of chemical processes at work in fuel cells.
Fuel cells rely on catalysts to create electricity from fuel sources such as hydrogen or methanol.
Friebel explains that fuel cells show promise as a source of clean, renewable energy for autos, but current designs need too much costly platinum as a catalyst to split oxygen molecules and burn the fuel. Cheaper catalysts must be found to make the design more viable.
His research at SSRL using X-ray spectroscopy to show bond-breaking and bond-making at work in chemical reactions has explored how the surface of platinum samples react with oxygen. That work, in combination with computer calculations, is providing a blueprint for a new, highly active fuel cell catalyst that uses a far smaller amount of platinum in special atomic configurations, and could pave the way for less expensive fuel cells. Lecturer: Daniel Friebel, SLAC - Наука та технологія
Great and simple explanation! It's rare to find such kind of scientists these days :)
23:05 "What do these metals look like at an atomic scale?"
30:00 Volcano Plot (in log scale)
42:20 "Combination of the same 2 metals, but … we dramatically change how they interact with Oxygen
49:15 "Five times less Pt in a fuel cell"
It helped me to understand how Catalysts really works
Amazing lecture!! Helped me a lot in my phd!
Brilliant talk. Thank you Sir!
The "Real" pointy end of Phys-Chem and Science/Technology.
Thank you
Very interesting and clear presentation! Thank you!
There has been a similar reaction in terms of heat produced with common water or even salt water toward what has been traditionally thought of as cold fusion [Pons and Fleischman experiment resulting in heat energy using palladium].
No,cold fusion is bunk.
The kenetic sort of idea of attraction and repellation.... opposites... magnetic kenetics?
Round and round AND ROUND! At the end we are all using Methanol. I guess we are in the same place.
The artificial methanol process is actually quite smart 👏🏽🥇
316 or 304 stainless steel is great enough to produce, on demand. It's all about arrangements and design
Well that was really informative. Daniel raises a valid point too at 1:05:12 regrading combusting H2 vs electro-chemical energy extraction as combustion will still create that familiar smog we see around the major cities.
Just wondering though recently I've heard about the use of graphene flakes with halogen coated edges, particularly iodine as an efficient and cheaper catalyst, is there any investigation at SLAC pursuing this too?
netsight 谢谢啦！！！真是非常感谢！😂😂😂
28:54 wow This part is very Interesting and Confusion clearing .
Try applying a high frequency pulse-voltage to resonate with the electron's movement around the nucleus to increase efficiency.
And what frequency would that be?
Since we are trying to resonate with the electron circulating the nucleus, it must be a multiple of the time x/t. Speed of the electron = 2.2*10^6 m/s divided by the elliptical distance traveled. Use the radius of hydrogen atom to calculate the distance: 2.5x10-11 m. Given the variables it will be trial by error.
The first problem with that is that the electron doesn't circle around the nucleus, the second problem is that you don't even know what you're trying to do.
Quantum mechanics is still in its infancy, therefore not appropriate to explain the efficient use of energy to resonate with existing frequencies.
No. Quantum mechanics is not "in its infancy", it's the most precisely tested theory in the history of science. You won't build better fuel cells by making stuff up.
This could have major negative implications for platinum mines in South Africa such as Amplats, Implats, Northam Platinum, Royal Bafokeng Platinum, Ivanhoe Mines etc.
Rhodium is about $170,000/kg (space shuttle money!). For context, Platinum is 5.5x cheaper.
See i thought the fuel cell was used to split water into oxygen and hydrogen to be used in a combustion engine. But this suggests doing the opposite and achieving a current. I'm so confused 😕
First you all need to know the Value Polarization of each Metal before arguing any points. Gold & Silver are positive?
That's why we can use bigger alternator and and extra battery
Creating a magnetic field frequency, will turn it up or down
What about pumping oxygen into hydrogen cell,while running
Apply a frequency, to make atom size pulsate, happy atoms, on the surface
nice
What happens when H2O is replaced with H2O2 ?
You mean in the cathode? If so, peroxide formation might lead to corrosion of the catalyst and also degrade the membrane thus lowering the overall efficiency. That's why 4-electron pathway is preferred for ORR.
Palladium... cobalt... platinum...the markets will know. Which ever one you choose it'll end up being costly.
should try nickle and palladium :-))
Continue watching the Q&A. Heidi Barnes asks that precise question at 56:46
Surprised to find that in late 2019, palladium is about $60,000/kg (about 2x the cost of platinum per kilogram). I’m excited to see what he says when I get to that part of the lecture
Edit: around 17:30 he talks about platinum is electrochemically the best, and his analysis rules out palladium (worse performer at double the price)
this is inspiring.
I have a patent for a Juicero based catalyst. It squeezes the hydrogen out of water. I’m looking for investors and a Juicero machine.
Nitrogen oxides, only if it's open cell
I think they should do it like batteries. Do it cheap and lasting short with metals that can be recycled and make it popular.
It's all about neutral arrangements
Why use metal at all, why not use carbon nano tubes?
1 million
Space mining, fam
He thinks cars are melting arctic ice? The arctic had no ice at all 7000 years ago
Nothing new