Im Abraumsalz des Meeres in Fülle vorhanden, derzeit wenig genutzt. Zusammen mit Strom und Wasserstoff als Energieträger eine sehr gute Alternative zu Zinc und Lithiumionen.
Aus der Graphentechnik ergeben sich weitere Möglichkeiten. Insbesondere das Bor-hältige „Weiße Graphen“ bietet interessante Möglichkeiten.
Dazu noch die Meinung von Gene Charlton:
- Magnesium could work better than hydrogen in fuel cells.
- There’s enough magnesium in seawater to provide energy for 300,000 years.
When people talk about alternative energy, hydrogen
often comes up. How about magnesium? We’ll see. Today, on Engineering Works! Listen
to the podcast.
Magnesium is nifty stuff. Pure magnesium is a silvery metal, and you probably
remember from high school chemistry that it burns with a hot white flame.
While a lot of research has already gone into using hydrogen to store energy,
either directly as a fuel or as part of fuel cell systems, some researchers
think we should be looking at magnesium as a way to store energy. Magnesium
stores about 10 times as much energy as hydrogen. And there’s enough magnesium
in seawater to provide energy for 300,000 years.
Engineers at a Canadian company are working on a fuel cell that uses
magnesium, air and water to produce electricity. An Israeli researcher has come
up with a magnesium-based battery sort of like the rechargeable lithium-ion
batteries we all know about. And a California researcher is working on a way to
use magnesium to produce hydrogen for fuel.
All of this sounds good, but there’s a problem. It takes a lot of energy to
purify magnesium to a form we can use. Maybe more than we’d get back. One
researcher in Japan thinks he has the answer: solar energy to power a laser that
would give us the almost 6,700° F. heat needed. We’ll see how that turns out.
Our magnesium power is somewhere in the future, so we’re done. See you next
Engineering Works! is made possible
by Texas A&M Engineering and produced by KAMU-FM in College Station.“