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AssigneeStoreDot Ltd.
InventorsDoron BURSHTAIN, Nir KEDEM, Eran SELLA, Daniel ARONOV
Estimating the term…
Improved anodes and cells are provided, which enable fast charging rates with enhanced safety due to much reduced probability of metallization of lithium on the anode, preventing dendrite growth and related risks of fire or explosion. Anodes and/or electrolytes have buffering zones for partly reducing and gradually introducing lithium ions into the anode for lithiation, to prevent lithium ion accumulation at the anode electrolyte interface and consequent metallization and dendrite growth. Various anode active materials and combinations, modifications through nanoparticles and a range of coatings which implement the improved anodes are provided.
Anode active material particles comprising metalloid cores and composite coatings, wherein the metalloid cores comprise at least one of Si, Ge and Sn and are between 20-500 nm in diameter, and wherein the composite coatings comprise lithium borates and/or phosphates and polymer molecules, which are anchored by the lithium borates and/or phosphates to the metalloid cores.
Dependencies are inferred from the claim text.