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Sandia designs better batteries for grid-scale energy storage
Posted on Sunday, July 25, 2021 @ 13:49:01 GMT by vlad

Aux-Equipment
Via Eurekalert.org: Sandia designs better batteries for grid-scale energy storage

New molten sodium batteries operate at lower temperatures using low-cost materials - DOE/Sandia National Laboratories

ALBUQUERQUE, N.M. -- Researchers at Sandia National Laboratories have designed a new class of molten sodium batteries for grid-scale energy storage. The new battery design was shared in a paper published today in the scientific journal Cell Reports Physical Science.


Molten sodium batteries have been used for many years to store energy from renewable sources, such as solar panels and wind turbines. However, commercially available molten sodium batteries, called sodium-sulfur batteries, typically operate at 520-660 degrees Fahrenheit. Sandia's new molten sodium-iodide battery operates at a much cooler 230 degrees Fahrenheit instead.

"We've been working to bring the operating temperature of molten sodium batteries down as low as physically possible," said Leo Small, the lead researcher on the project. "There's a whole cascading cost savings that comes along with lowering the battery temperature. You can use less expensive materials. The batteries need less insulation and the wiring that connects all the batteries can be a lot thinner."

However, the battery chemistry that works at 550 degrees doesn't work at 230 degrees, he added. Among the major innovations that allowed this lower operating temperature was the development of what he calls a catholyte. A catholyte is a liquid mixture of two salts, in this case, sodium iodide and gallium chloride...

Full article: https://www.eurekalert.org/pub_releases/2021-07/dnl-sdb072121.php


 
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"Sandia designs better batteries for grid-scale energy storage" | Login/Create an Account | 1 comment | Search Discussion
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Speed and absorption key to optimizing new type of rechargeable battery (Score: 1)
by vlad on Monday, August 09, 2021 @ 16:51:06 GMT
(User Info | Send a Message) http://www.zpenergy.com
Highlights

*    High quality, rechargeable batteries are a necessity to sustainably meet the world’s growing energy demands.
*    Lithium sulfur batteries are promising candidates for the next generation of these energy sources as they can store more energy than other rechargeable batteries.
*    For lithium sulfur batteries to become readily available, a common, dissolving issue during their construction needs to be overcome.
*    The researchers created a hybrid material that both accelerates the construction process, which reduced the likelihood of the issue occurring, and absorbs any unwanted products that may have been produced in the process.
*    The result was a lithium sulfur battery that had a longer life span, required a shorter charging time, and could run for more time between charges.




 

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