Ammonia Borane Breakthrough For Hydrogen Cells?
The hydrogen car has long been held up by the problem of creating usable hydrogen. A recent Ammonia Borane breakthrough might go a long way to creating plenty of usable hydrogen.One of the big supposed benefits of the hydrogen car is the fact hydrogen is plentiful on our planet. Well, it is. The problem is it is difficult to find in a state where it is not heavily bonded with other chemicals. This makes it an impractical fuel since all the traditional approaches to creating it require nearly as much energy to make useable hydrogen as the energy actually created using the hydrogen in a fuel cell.
Ammonia Borane has long been considered one of the best hydrogen materials on the planet. It contains well in excess of 19 percent hydrogen by weight. That may not sound like a lot, but it is. The key is how you get the hydrogen out of the material. Traditional methods have proved very impractical. They consisted primarily of heating the material up or heavily pressurizing it. Both approaches work, but require so many resources that you would need a vehicle the size of a freight truck to make the numbers work.
Professor Arvind Varma is the Director of the School of Chemical Engineering at Purdue University. He and his team may have found a new way to separate the hydrogen from Ammonia Borane in a manner that makes the concept of a hydrogen fueled car a practical reality. The idea is to add water to ammonia borane, heat it to 180 degrees or so and put it under moderate pressure. Under these conditions, the hydrogen separates at a rate of 14 percent by weight. This is an amazingly high number. To give you a sense of perspective, the Department of Energy was hoping to see an achievement of 5.5 percent by 2015.
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So, what does this mean in the big picture? Well, hydrogen fuel cell and car technology is currently like a big puzzle that just came out of the box. The parts are all there, but few of them are connected. This development could be the equivalent of completing the outer edge of the puzzle. It could effectively form the basis for individual fueling stations across the country. The only problem is we need to build those stations and figure out how to bring the cost of hydrogen cars down from the current $100,000 or so they cost. Still, it is a step in the right direction and one that should be viewed very positively.
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