NewsBlaze search box Daily News header

Will Storage Discovery Make Hydrogen-Powered Cars a Reality?


Two problems face those who want the lightest element, hydrogen, to be the transportation fuel of the future. One is finding a way to store it and there MAY be new hope in that area. The other, of course, is just where the hydrogen will come from (see below for a note on this).

Hydrogen seems as if it would be the perfect fuel for cars using fuel cells. Simply feed hydrogen and air into the cell and water comes out. But compressed hydrogen is incredibly dangerous so a new way to store it in a car is essential.

The problem with hydrogen is that to store very much energy you need extremely high pressures which make the "fuel" tank very dangerous. The best way to carry large quantities around safely is by having it stored in some sort of metallic sponge.

hydrogen car
Photo: Department of Energy

A useful fuel tank would need to store about 4% hydrogen by weight and also release it, both at reasonable temperatures.

Chinese and American researchers announced in a recent paper that they have found a way to do this.

(Kun Lü, et al. "Sc-phthalocyanine sheet: Promising material for hydrogen storage." Applied Physics Letters 99, 163104 (2011). DOI:10.1063/1.3653465)

The material will hold 4.6% hydrogen by weight, exceeding the U.S. Dept. of Transportation goal of 4.3% and will do it at 283 degrees Kelvin, or about room temperature, and at a reasonable pressure of 100 bars (1400psi.). (One bar is about sea level air pressure.)

So far, so good, but there may be a fly in the ointment, the same one which faces virtually ALL proposed green technologies - the material uses a rare earth element - Scandium.

China, as has been well publicized, owns most of the world's supply of rare earth elements and is planning to use most of it for domestic production.

hydrogen refueling
Refueling a government forklift
Photo: Department of Energy

But linked to supply problems is the price which will tend to go up as demand increases. Just a few years ago you could pick up a Kilogram of Scandium for about $1600, the 2005 price was $70/gram. A recent price quote was $270/gram, or about $120,000 per pound.

When you factor in the low current demand - a small amount is used in high intensity lights or in an alloy of aluminum - you can see that although the new material has nice physical properties, the financial realities mean it probably won't be used in 5-10 million cars anytime soon.

Even if the problem of storing hydrogen is overcome, there remains the basic problem of just how to get the hydrogen. You can't mine it any place closer than Jupiter. Generating hydrogen is easy either using a catalyst and common hydrocarbons (which leaves the carbon) or from water - simple, just pass electricity through some clean water - lots of kids do that in high school.

One slight problem if you want hydrogen to reduce the carbon footprint of cars and trucks - where do you get the electricity? Today we get it by burning coal, oil, and natural gas - include the losses involved in converting one energy storage source to another and using hydrogen to power cars means MORE carbon in the air, not less. TANSTAAFL gets you every time.

John McCormick is a reporter, /science/medical columnist and finance and social commentator, with 17,000+ bylined stories. Contact John through NewsBlaze.

  Please leave a comment here     If it does not display within 10 seconds, please refresh the page

Related High Tech News

iPhone7 rumors are in play, soon after the announcement of iPhone6s and 6s Plus. iPhone 7 will feature Apple A10 processor and launch at WWDC, June 2016.
Many are considering the concerns of gamification. Some believe that employees will focus too much of their time on the game, and not enough on the actual work they need to be doing. Critics believe that salaries, bonuses, and commissions are reward
Apple iPhone 6s leaked - all set to release on 18th September, but there may be some serious issues with this ultra-cool phone that could worry customers.
Making counterfeit money has become easier than ever thanks to the creative technology available today. And when you get paid with it, there's not much you can do about it if you don't notice right away.
The divide between Apple and Android users may be narrowing. Apple has quietly announced ambitions to bring some of its apps to Google's Android market.
Windows 10 is easy to install and fast to use though some features have a learning curve. The one-sided legalese can be fun light summertime reading.


NewsBlaze Writers Of The Month

Popular Stories This Month

newsletter logo

Copyright © 2004-2015 NewsBlaze Pty. Ltd.
Use of this website is subject to our Terms of Service and Privacy Policy  | DMCA Notice               Press Room   |    Visit NewsBlaze Mobile Site