Showing posts with label Fuel cell. Show all posts
Showing posts with label Fuel cell. Show all posts

Monday, April 12, 2010

Electroreduction of Dioxygen for Fuel-Cell Applications: Materials and Challenges

Reaction coordinates for catalyzed and uncatal...Image via Wikipedia


A review of the oxygen reduction reaction (ORR) and its use in fuel-cell applications is presented. Discussed are mechanisms of the ORR and implementations of catalysts for this reaction. Specific catalysts discussed include nanoparticles, macrocycles and pyrolysis products, carbons, chalcogenides, enzymes, and coordination complexes. A prospectus for future efforts is provided.

Technorati Cosmos: other blogs commenting on this post

Reblog this post [with Zemanta]

Wednesday, February 24, 2010

Clean, cheap power from fuel cells in a box? - USATODAY.com

Transparentised version of :Image:Gluehlampe 0...Image via Wikipedia
Clean, cheap power from fuel cells in a box? - USATODAY.com: "Bloom Energy, backed by Silicon Valley's leading venture capitalist, has been in stealth mode for eight years. Today, it's scheduled to announce that 20 companies, including Wal-Mart, Google, eBay, FedEx, Staples, Coca-Cola, Bank of America and Cox Enterprises, have bought Bloom's fuel-cell boxes. The commercial-scale boxes are about the size of a parking space and cost $700,000 to $800,000."
Bloom's technology is cheaper and more efficient than others because of proprietary technology that enables it to use low-cost materials — sand and ink — in 4-inch-by-4-inch fuel cells as thick as business cards. One cell powers a light bulb. Bloom stacks them together to produce more power.

Bloom's big breakthrough was reducing breakage by figuring out how to get the cells and the metal plates that go between them in the stacks to expand and shrink at the same rate at temperatures up to 800 degrees Celsius (1,472 degrees Fahrenheit). The high heat makes the fuel more reactive and the cell more efficient, Sridhar says. The heat also enables use of different fuels, making the tech easier and cheaper to deploy, he says.

Reblog this post [with Zemanta]

Saturday, February 20, 2010

German Missions in the United States - Opening of GCRI

American cultural icons, apple pie, baseball, ...Image via Wikipedia
German Missions in the United States - Opening of GCRI




More than a decade ago, Massachusetts Institute of Technology physicist Wolfgang Ketterle was honored with University of Colorado researchers Eric Cornell and Carl Wieman for work that led to the discovery of a new state of matter called the Bose-Einstein condensate. Together, they won the2001 Nobel Prize in Physics. Citing his success, Ketterle called for even greater scientific collaboration between disciplines, universities and countries during a brief lecture he gave Friday to mark the opening of the German Center for Research and Innovation (GCRI) in New York City.


A fuel cell system is the centerpiece of propulsion technology. The fuel cell system was developed by the DLR Institute for Technical Thermodynamics in collaboration with BASF Fuel Cells and Serenergy A/S. It uses hydrogen as its fuel, and this is converted into electrical energy in a direct, electrochemical reaction with oxygen in the ambient air, without any combustion occurring. During this zero-particulate reaction, the only byproduct is water.




Fuel cell as future energy source for air transport
"With our successful first flight, we have verified the feasibility of fuel-cell powered flight and our next steps will focus on improving efficiency levels and on extending the service life of these systems," stated Antares Project Manager Josef Kallo from the DLR Institute for Technical Thermodynamics.
This could, for example, make it possible to significantly improve performance by optimizing the cooling concepts, fuel cell architecture and components such as the air supply system.

Something, somewhat, is the same story called now E 85. Ethanol use as fuel was tested for years in Brasilia and now is on his way over the road here.
This Hydrogen based technology for automotive industry a asking for new infrastructure that will be tested in Germany. After German success... here.

Reblog this post [with Zemanta]