Battery with acidified cathode and lithium anode
AssigneeHHeLi, LLC
InventorPaige L. Johnson
Life of this patent
Estimating the term…
Abstract
A battery comprising an acidified metal oxide (“AMO”) material, preferably in monodisperse nanoparticulate form 20 nm or less in size, having a pH <7 when suspended in a 5 wt % aqueous solution and a Hammett function H0 >−12, at least on its surface.
Claims11
A battery cell having an electrode comprising at least one solid metal oxide nanomaterial including particles of uniform size separated from one another, and having an opposing electrode comprising at least 50 wt % metallic lithium when the battery cell is constructed, the solid metal oxide nanomaterial being acidic but not superacidic at least on its surface, having a pH<7, the pH being measured when a dried form of the solid metal oxide nanomaterial is suspended in an aqueous solution at 5 wt %, and a Hammett function H0>−12.
A method comprising:
- providing a metallic lithium anode in a battery cell;
- providing a cathode in the battery cell that comprises at least one solid metal oxide nanomaterial, the solid metal oxide nanomaterial including particles of uniform size separated from one another, the solid metal oxide nanomaterial being acidic but not superacidic, at least on its surface, having a pH<5, the pH being measured when a dried form of the solid metal oxide nanomaterial is suspended in water at 5 wt %, and a Hammett function H0>−12.
A method of passivating a metallic lithium anode in a battery cell comprising:
- providing a cathode in the battery cell that comprises at least one solid metal oxide nanomaterial, the solid metal oxide nanomaterial including particles of uniform size separated from one another, the solid metal oxide nanomaterial being acidic but not superacidic at least on its surface, having a pH<5, the pH being measured when a dried form of the solid metal oxide nanomaterial is suspended in water at 5 wt %, and a Hammett function H0>−12.
A battery cell comprising an anode, an electrolyte, and a cathode, wherein the cathode comprises at least one solid metal oxide nanomaterial including particles of uniform size separated from one another, the solid metal oxide nanomaterial being acidic but not superacidic at least on its surface, having a pH<5, the pH being measured when a dried form of the solid metal oxide nanomaterial is suspended in water at 5 wt %, and a Hammett function H0>−12, and wherein at least part of the anode consists essentially of metallic lithium.
Dependencies are inferred from the claim text.