Abstract: A regenerated cathode active material comprises a core material comprising lithium and a transition metal oxide, the core material having a surface, wherein the core material is a recycled cathode active material. At least two different lithium-ion conducting species are on the surface of the core material, and the at least two different lithium-ion conducting species are selected from AlF3, Li3PO4, and a lithium metal oxide. Another regenerated cathode active material for use in a lithium-ion battery comprises a core material comprising a transition metal oxide and lithium, the core material having a surface, and multiple lithium-ion conducting species on the surface, wherein the core material is a recycled cathode active material.

Abstract: A method for regenerating a cathode of a used lithium-ion battery, wherein the cathode of the used lithium-ion battery has a first level of lithium ions, the method comprising providing a pre-lithiation agent to the cathode, assembling a regenerated lithium-ion battery using the cathode with the pre-lithiation agent, and cycling the regenerated lithium-ion battery through at least one full charge event and at least one full discharge event to provide the cathode of the regenerated lithium-ion battery with a second level of lithium ions, wherein the second level of lithium ions is higher than the first level of lithium ions.

Abstract: A solid-state battery includes an anode current collector and an anode layer on the anode current collector. The anode layer comprises anode active material composed of anode active particles each encapsulated in a solid ion conductor. The solid-state battery also includes a cathode current collector and a cathode layer on the cathode current collector. The cathode layer comprises cathode active material composed of cathode active particles each encapsulated in the solid ion conductor. A solid electrolyte structure separating the anode layer and the cathode layer has anode-side columns and cathode-side columns aligning parallel to a stacking axis of the solid-state battery, the anode-side columns extending into the anode layer and the cathode-side columns extending into the cathode layer.

Abstract: A regenerated cathode active material comprises a core material comprising lithium and a transition metal oxide, the core material having a surface, wherein the core material is a recycled cathode active material. At least two different lithium-ion conducting species are on the surface of the core material, and the at least two different lithium-ion conducting species are selected from AlF3, Li3PO4, and a lithium metal oxide. Another regenerated cathode active material for use in a lithium-ion battery comprises a core material comprising a transition metal oxide and lithium, the core material having a surface, and multiple lithium-ion conducting species on the surface, wherein the core material is a recycled cathode active material.

Abstract: A regenerated cathode active material comprises a core material comprising lithium and a transition metal oxide, the core material having a surface, wherein the core material is a recycled cathode active material that has been re-lithiated. At least two different lithium-ion conducting species are on the surface of the core material, and the at least two different lithium-ion conducting species are selected from AlF3, Li3PO4, and a lithium metal oxide. Another regenerated cathode active material for use in a lithium-ion battery comprises a core material comprising a transition metal oxide and lithium, the core material having a surface, and multiple lithium-ion conducting species on the surface, wherein the core material is a recycled cathode active material that has been re-lithiated.

Abstract: A regenerated cathode active material comprises a core material comprising lithium and a transition metal oxide, the core material having a surface, wherein the core material is a recycled cathode active material that has been re-lithiated. At least two different lithium-ion conducting species are on the surface of the core material, and the at least two different lithium-ion conducting species are selected from AlF3, Li3PO4, and a lithium metal oxide. Another regenerated cathode active material for use in a lithium-ion battery comprises a core material comprising a transition metal oxide and lithium, the core material having a surface, and multiple lithium-ion conducting species on the surface, wherein the core material is a recycled cathode active material that has been re-lithiated.

Abstract: A solid-state battery includes an anode current collector and an anode layer on the anode current collector. The anode layer comprises anode active material composed of anode active particles each encapsulated in a solid ion conductor. The solid-state battery also includes a cathode current collector and a cathode layer on the cathode current collector. The cathode layer comprises cathode active material composed of cathode active particles each encapsulated in the solid ion conductor. A solid electrolyte structure separating the anode layer and the cathode layer has anode-side columns and cathode-side columns aligning parallel to a stacking axis of the solid-state battery, the anode-side columns extending into the anode layer and the cathode-side columns extending into the cathode layer.