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Tesla patents ‘secret sauce’ additive but will ‘million mile’ lithium-ion cell reach commercialisation?

Thu, 10/03/2019 - 15:01 -- Paul Crompton

US electric vehicle OEM Tesla's latest patent suggests it has solved the failure issues of high operating temperatures and voltages in lithium-ion technology to make a battery that will last a ‘million miles’.

Tesla’s lead battery researcher Jeff Dahn and members of the Department of Physics and Atmospheric Science in Dalhousie University suggest their lithium-ion pouch cells have a 6,000 cycle life, or 20 years in grid energy storage applications. 

Chris Hale, from Upgradetech Engineers, told BEST: “Until I can hold in my hand a commercially produced cell capable of several thousand cycles, I will always remain sceptical."

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