Originally published April 2 2005
Nanomaterials may provide the key to creating viable hydrogen power
by Mike Adams, the Health Ranger, NaturalNews Editor
Scientists at the Pacific Northwest National Laboratory (PNNL) have discovered a way to produce hydrogen from ammonium borane at high rates, bringing the hydrogen fuel cell closer to reality. Normally, ammonium borane releases hydrogen too slowly to be used in a fuel cell, but the PNNL has discovered a method of pulling the hydrogen through pores 6.5 nanometers wide, which creates hydrogen 100 times faster than normal.
One approach is to find a solid chemical material that can hold and then release hydrogen as needed.
Recently, PNNL researchers Tom Autrey and Anna Gutowska found a way to release hydrogen from a solid compound almost 100 times faster than was previously possible.
They will present their findings at the American Physical Society Meeting in Los Angeles on March 21, as part of The Grand Challenge of Hydrogen Storage symposium.
"The compound ammonia borane is known to release hydrogen at temperatures below 80 degrees Celsius, but the rate of release is extremely slow," said Autrey.
The PNNL team used a nanoscale mesoporous silica material as scaffolding for ammonia borane to achieve a high rate of hydrogen release at a lower temperature than is found at the conventional scale.
A lower temperature reaction, 80 degrees Celsius (170 degrees Fahrenheit), or below, is important because additional energy is not required to maintain the reaction.
To transform the ammonia borane to a nanomaterial, scientists dissolve the solid compound in a solvent and then add the solution to the mesoporous support material.
Capillary action of the porous material pulls the ammonia borane into the pores of the support.
The nanoscience approach to using ammonia borane as a storage material exceeds DOE's weight and volume storage goals for 2010.
As a bonus, it also avoids the volatile chemicals produced at the bulk scale.
"We found no detectable borazine, which is harmful to fuel cells, produced by the reaction in the mesoporous materials," said Autrey.
Based on computational thermodynamic analysis, researchers believe the process may eventually be designed to be reversible, which would allow the storage material to be regenerated and provide a sustainable hydrogen storage compound with a longer lifetime.
A patent is pending on this process for hydrogen storage.
All content posted on this site is commentary or opinion and is protected under Free Speech. Truth Publishing LLC takes sole responsibility for all content. Truth Publishing sells no hard products and earns no money from the recommendation of products. NaturalNews.com is presented for educational and commentary purposes only and should not be construed as professional advice from any licensed practitioner. Truth Publishing assumes no responsibility for the use or misuse of this material. For the full terms of usage of this material, visit www.NaturalNews.com/terms.shtml