It is true that we have the world’s largest rooftop solar array, being an important step for our future, but the problem is all that energy is no good until we possess the world’s largest battery bank as well. Every day researchers and scientists all over the world are trying to discover new renewable sources, the amount of energy generated from these being on rise, but the conventional battery technology isn’t keeping up with them.
The Researchers at Utah-based Ceramatec have developed a new disc-shaped battery that can store up to 20KWh of electricity, enough to power an average home for most of the day.
This new battery technology runs on a sodium-sulfur composition that works at temperatures greater than 600F. Ralph Brodd, an independent energy conversion consultant, said: “Sodium-sulfur is more energetic than lead-acid, so if you can somehow get it to a lower temperature, it would be valuable for residential use”
Ceramatec’s new battery uses a thin ceramic membrane that is sandwiched between the sulfur layer and the sodium layer, enabling the battery to run at less than 200 F. Only positive sodium ions can pass through, leaving electrons to create a useful electricity.The company claims that the new batteries will be available on the market by 2011, and will sell for about $2000.