Patent No. EP3759752 (titled "Anodes For Lithium-Based Energy Storage Devices") was filed by Graphenix on Feb 26, 2019. The application was issued on Sep 24, 2025.
An anode for an energy storage device comprises an electrically conductive current collector featuring a metal oxide layer and an overlaying continuous porous lithium storage layer. The lithium storage layer consists of at least 40 atomic % amorphous silicon and possesses an average density between 1.1 g/cm³ and 2.25 g/cm³. The current collector may further include an electrically conductive layer (e.g., stainless steel, titanium, nickel, or copper) beneath the metal oxide layer, which may be an oxide of nickel or titanium with an average thickness of at least 0.02 µm. The lithium storage layer may be deposited via PECVD, contain less than 10 atomic % carbon, and be substantially free of nanowires, nanopillars, and nanotubes.

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