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Scientists discover record-breaking hydrogen storage materials for use in fuel c
Posted on Monday, November 12, 2007 @ 20:13:39 UTC by vlad

Science Scientists at the University of Virginia have discovered a new class of hydrogen storage materials that could make the storage and transportation of energy much more efficient — and affordable — through higher-performing hydrogen fuel cells.

Bellave S. Shivaram and Adam B. Phillips, the U.Va. physicists who invented the new materials, will present their finding today at the International Symposium on Materials Issues in a Hydrogen Economy at the Omni Hotel in Richmond, Va.


“In terms of hydrogen absorption, these materials could prove a world record,” Phillips said. “Most materials today absorb only 7 to 8 percent of hydrogen by weight, and only at cryogenic [extremely low] temperatures. Our materials absorb hydrogen up to 14 percent by weight at room temperature. By absorbing twice as much hydrogen, the new materials could help make the dream of a hydrogen economy come true.”

In the quest for alternative fuels, U.Va.’s new materials potentially could provide a highly affordable solution to energy storage and transportation problems with a wide variety of applications. They absorb a much higher percentage of hydrogen than predecessor materials while exhibiting faster kinetics at room temperature and much lower pressures, and are inexpensive and simple to produce.

“These materials are the next generation in hydrogen fuel storage materials, unlike any others we have seen before,” Shivaram said. “They have passed every litmus test that we have performed, and we believe they have the potential to have a large impact.”

The inventors believe the novel materials will translate to the marketplace and are working with the U.Va. Patent Foundation to patent their discovery.

“The U.Va. Patent Foundation is very excited to be working with a material that one day may be used by millions in everyday life,” said Chris Harris, senior licensing manager for the U.Va. Patent Foundation. “Dr. Phillips and Dr. Shivaram have made an incredible breakthrough in the area of hydrogen absorption.”

Source: University of Virginia
Via: http://www.physorg.com/news114098168.html

 
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"Scientists discover record-breaking hydrogen storage materials for use in fuel c" | Login/Create an Account | 1 comment | Search Discussion
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New Development in Hydrogen Production (Score: 1)
by vlad on Wednesday, November 14, 2007 @ 20:48:19 UTC
(User Info | Send a Message) http://www.zpenergy.com
Hi Vlad,

I just saw the following information in the newspaper from the Reuters news service. You probably already know about it. It is one of a variety of ways to tweak out hydrogen more efficiently than "standard" electrolysis, plus it can be done now and pretty quickly. It is not a super sophisticated approach.

Penn State researcher Bruce Logan and his colleague Shaoan Cheng report [Proceedings of National Academy of Sciences] they have developed a simple way of producing hydrogen fuel from waste water [www.nsf.gov]. The recipe calls for any type of biodegradable organic matter mixed with water. Then add some vinegar and some naturally occurring bacteria. The bacteria feed on the acetic acid in the vinegar and producing electrons and protons. That results in a weak electric current. Add a bit more electricity and hydrogen gas bubbles out of the liquid. The attractive feature is that you only need about one tenth the electricity required for ordinary electrolysis because the microbes supply the rest of the energy while breaking down the organic materials.

The system is too bulky to put in a vehicle, but can be used to produce hydrogen gas. Many current water treatment plants can be converted into hydrogen production plants while still carrying on their original function. The remaining question is whether the hydrogen can be packaged in a way similar to the Powerball technology to make it easily transportable and safe without requiring much additional energy outlay. Powerballs chemically bind hydrogen to sodium to form sodium hydride and seal it in a plastic ball so that it can be transported easily and safely. When the ball is cut open in the presence of water, the chemical reacts with the water to release hydrogen on demand and in the amounts required. The used Powerballs consisting of plastic and sodium hydroxide can then be otherwise reused or recycled over and over many times. Sodium hydroxide is a common industrial chemical. Efficient and safe hydrogen carriers of several types are being developed by Ovonics and other R&D groups.

Douglass



 

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