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Energy Storage Home -Industrial Batteries

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vfx

Well-Known Member
Aug 18, 2006
14,790
52
CA CA
Looks Promising and serious.

New battery could change world, one house at a time

Ceramatec says its new generation of battery would deliver a continuous flow of 5 kilowatts of electricity over four hours, with 3,650 daily discharge/recharge cycles over 10 years. With the batteries expected to sell in the neighborhood of $2,000, that translates to less than 3 cents per kilowatt hour over the battery's life. Conventional power from the grid typically costs in the neighborhood of 8 cents per kilowatt hour.

In a laboratory at Ceramatec, a small battery -- a NaSICON sandwich in silver foil -- has been cycling up and down since October to prove out the electrochemistry. Engineers are confident the tests will support a projected useful life of 3,650 cycles, which meet the standard of one discharge/recharge cycle per day for 10 years. It's a tall challenge, according to Coors, but doable. "It's very efficient in terms of watt-hours per kilogram," he said. "We're now in excess of 200, which puts us in the sweet spot for all the applications we've been talking about."
With some 21 plants producing advanced ceramic products worldwide, the expectation is that full-scale production of ceramic sheets for the new batteries could be tooled up in short order. In fact, only a handful of CoorsTek facilities would likely be employed.
The order of magnitude pencils out along these lines: a target of 20 gigawatt hours of storage in 20 kilowatt-hour battery increments equals 1 million batteries. Or using a different metric, 1 million square meters of thin ceramic electrolyte would yield 20 gigawatt hours of batteries, equal to California's entire spinning reserve.
Nobody at CoorsTek even blinks at such figures. The company already produces 3 million pounds of ceramic material per month. "Once we have a working prototype battery with all the standards and cost requirements met, it will come up quickly," said Grover Coors. "It would scare people to know how quickly we can bring this up."
They're about about six months away from initial scale-up toward a commercial product, he said.
 
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Interestingly, as with latest developments in lithium air batteries the "secret sauce" seems to be the ion conducting membrane.

The chemistry here is Sodium-Sulfur. Other parameters look good as well, such as:
"It's very efficient in terms of watt-hours per kilogram," he said. "We're now in excess of 200, which puts us in the sweet spot for all the applications we've been talking about."
Indeed, with a projected cost of 100 $/KWh.

The volumetric density does not look superb, though.
The company calculates that the battery will cram 20 to 40 kilowatt hours of energy into a package about the size of a refrigerator