Good news!
Apparently, KIB [potassium-ion battery or K-ion battery] were not invented before 2004 (Wikipedia), but are available so far only in small sizes.
"... It was in this lab that ... invented the company's Potassium Prussian White (KBW) cathode material – which is reported to be the key development that enables production of the "safer, quickly charging, more efficient and sustainable" potassium-ion battery (KIB).
To make a KIB cell, KBW is paired with a commercial-grade graphite anode, along with readily available electrolyte formulations and separators – with the company also highlighting the distinct lack of critical minerals like lithium, cobalt, nickel and copper in the new batteries. ..."
Caution: The article below is based on company news!
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