Battery supplier CATL introduced sodium-ion batteries on Thursday, which, according to the company, offer faster charging and greater thermal stability than the chemistry of conventional lithium-ion batteries.<\/p>\n
A sodium-ion battery cell can be charged to 80% in 15 minutes at room temperature, CATL said in a press release. It also has a capacity retention rate of over 90% at -4 degrees Fahrenheit, according to the company.<\/p>\n
The initial version has a power of 160 watt-hours per kilogram, but CATL stated that it aims for 200 Wh\/kg with a next-generation version currently in development.<\/p>\n
CATL claims that its sodium-ion batteries are commercially viable because they address previous material issues. The cathode uses modified Prussian blue material by rearranging electrons, solving a previous issue of rapid capacity fading after the material cycle. The anode is made of a hard carbon material, which is porous, allowing for greater storage and rapid movement of sodium ions, the company claims.<\/p>\n
CATL also asserts that its sodium-ion cells can be used alongside lithium-ion cells within the same battery pack. Being able to mix battery chemicals as needed could better assist automakers (and battery manufacturers) in adapting to supply shortages.<\/p>\n
This new chemistry also provides automakers with an alternative to lithium iron phosphate (LFP) cells to free up nickel-dense cells. Tesla has started using LFP cells in some electric cars in the Chinese market, attempting to save nickel-based cells for applications like the Semi.<\/p>\n
Sodium is also a key ingredient in some solid-state chemistries, such as glass electrolyte cells championed by lithium-ion pioneer John Goodenough.<\/p>\n
CATL’s sodium-ion chemistry also seems to be ready for prime time now, which is not something we can say about low-cost iron-air batteries that could be part of the future of home networks.<\/p>","protected":false},"excerpt":{"rendered":"
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