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Want a cheap hydrogen fuel cell? Wash out the platinum

By | February 20, 2013, 5:25 AM PST

Cleans your clothes, powers your car. Liquid catalysts like those in detergents can also economically convert hydrogen into electricity for vehicles, according to ACAL.

Plenty of things are holding back the hydrogen economy. One of them is the cost of hydrogen fuel cells. A British company now says it has slashed costs by replacing platinum with a liquid that makes fuel cells affordable to automobile manufacturers.

The company, ACAL Energy, said in an email that it has developed its FlowCath catalyst with backing from “a leading car manufacturer” that it declined to identify.

Hydrogen fuel cells typically produce electricity by catalyzing oxygen and hydrogen. The conventional process relies on platinum, a rare and expensive metal. FlowCath gets rid of 80 percent of the platinum by using a liquid chemical catalyst inspired by detergent - an idea applied by co-founder Andy Creeth, who is a former chief scientist at soap seller Unilever.

The technology strips out 25 percent of costs “in mass market volumes” and “dramatically enhances the cell’s longevity,” the company said. That could be a key advantage, since platinum itself is known to provide durability. The technology can also help shrink fuel cells, which could make it easier to fit them into cars.

ACAL is not the only outfit trying to take the platinum out of fuel cells. Among others: A couple of U.S. Department of Energy teams are  working on it, one at Brookhaven National Laboratory and another at Los Alamos National Laboratory;  Brown University scientists have proposed a cobalt-graphene catalyst. Less recently, Monash University in Australia demonstrated a polymer catalyst, and Case Western Reserve University as well as the University of Dayton, both in Ohio, have shown how carbon nanotubes can work in place of platinum.

But Runcorn, England-based ACAL looks just about ready to go, noting that it’s “in discussions with a number of major auto-makers” aimed at licensing the technology.

Three weeks ago, Ford, Renault-Nissan and Daimler joined forces to develop an affordable, mass market, hydrogen powered car by 2017. A UK government report earlier this month predicted that there could be 1.5 million hydrogen cars on British roads by 2030.

ACAL’s backers include the unnamed auto company, as well as Belgian chemicals company Solvay and The Carbon Trust, a U.K. low carbon advisory group with strong ties to German industrial company Siemens.

It has hired a new CEO, Greg McCray, to oversee its licensing business model. McCray was CEO of Antenova, a British firm that provides antenna technology to smartphone and consumer electronics manufacturers.

Now, if only someone would license a way to economically obtain hydrogen in the first place. And transport it.

Image from Unilever

Cycle through this list of previous hydrogen and related stories on SmartPlanet:

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Mark Halper

About Mark Halper

Mark Halper is a contributing editor for SmartPlanet.

Mark Halper

Mark Halper

Contributing Editor

Mark Halper has written for TIME, Fortune, Financial Times, the UK's Independent on Sunday, Forbes, New York Times, Wired, Variety and The Guardian. He is based in Bristol, U.K.

Follow him on Twitter.

Mark Halper

Mark Halper

Mark has no financial holdings in the companies he writes about. He occasionally travels at the expense of companies or their press relations agencies in order to report on a company or industry event related to it; Mark will prominently disclose this information when appropriate. This relationship will have no influence on his coverage. Companies he covers do not get to review columns in advance, or select or reject topics.

He writes for SmartPlanet and is not an employee of CBS.

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Economically obtaining hydrogen is the problem, and
that is what will continue to hold back hydrogen powered vehicles for a long time, and perhaps forever. When it can't compete with fossil fuels, or even other "renewable" energy sources, then, it will just remain a dream. But, hydrogen is everywhere, in the air and in water, so, people will naturally continue trying to extract it and harness it.
Posted by adornoe
20th Feb
0 Votes
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Hydrogen
I think the problem with hydrogen as a fuel for light vehicles is having a large enough tank. Hydrogen is difficult to handle and requires either an extremely high pressure tank to hold it or an impractically cold tank so it can be held as a liquid. Unless someone develops a way to simply catalyze hydrogen out of water at a high enough rate to feed the fuel cell I think it is an impractical fuel for most vehicles.
Posted by riverat1
21st Feb
0 Votes
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H2 not the best fuel
The energy density of H2 at 1atmosphere and 20C is about 0.09kWh/L, which is definitely not very good when compared to gasoline which is about 8.76kWh/L.

Energy is needed to compress H2 in order to increase its volumetric energy density, thus making it more energy expensive as a fuel. And of course, anything that increases the energy expense also increases the monetary expense, so right away we're heading towards a non-viable business model.

Why talk about the business model? Because if it doesn't make economic sense, then it won't happen.

Compressing H2 while cooling it so that it achieves a liquid state is even more energy expensive and even then, liquid H2 only has an energy density of 2.36kWh/L.

Why am I using the volumetric energy density instead of the more usual massive energy density? Because volume is extremely important to vehicle design. If fuel tanks need to effectively be high pressure thermos bottles 4 times the size of the current fuel tanks that exist in light vehicles today, than that presents a very serious design challenge that makes it impractical.

Also, anyone familiar with the Hindenburg can imagine what happens to that highly compressed or even liquid H2 during a simple fender bender. Not good.

It is because of the very simple physics, that I am not optimistic about a hydrogen economy.

A better option, but still energy expensive, would be to combine the H2 with carbon from CO2 and produce something like butanol (C4H9OH) which can then be used in something more like a conventional ICE. I haven't seen much development on this approach but if the monetary expense can be kept low through some form of highly efficient artificial photosynthesis that produces butanol, then there might be a compelling business model.

But at twice the price of petroleum, vegetable oil (which works in a diesel engine) will be the more viable business model for the near future. Yes, it has problems, but those problems are more easily solvable (e.g. algae) than the inherent problems with H2 as a fuel.
Posted by mheartwood
26th Feb
0 Votes
+ -
Hydrogen Economy
Sign the Petition to the White House. Build the Hydrogen Economy:

https://petitions.whitehouse.gov/petition/build-hydrogen-economy/CGJXwTcX
Posted by jabailo1
22nd Feb
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