Materials prepared by metal extraction
AssigneeWildcat Discovery Technologies, Inc.
InventorsMarissa Caldwell, Steven Kaye, Wei Tong, David Keogh, Chen Zheng
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Abstract
A method for extracting ions from an active material for use in a battery electrode includes mixing the active material and an activating compound to form a mixture. The mixture is annealed such that an amount of ions is extracted from the active material, an amount of oxygen is liberated from the active material, and an activated active material is formed. Embodiments of the invention include the activated active material, the electrode, and the primary and secondary batteries formed from such activated active materials.
Claims14
A method of forming an active material for use in a battery electrode, comprising:
- providing a starting material comprising lithium, at least one transition metal, and oxygen;
- mixing the starting material with an activating material comprising carbon monofluoride;
- and
- annealing the mixture for a time and temperature such that lithium present in the starting material is extracted from the starting material via reaction with carbon monofluoride.
A method of making a battery, comprising:
- providing an electrolyte;
- providing an anode;
- providing a cathode comprising a chemically delithiated active material, wherein the active material is chemically delithiated by a method via reation with carbon monofluoride that forms a lithium halide or lithium chalcogenide reaction product, at least one transition metal, and oxygen;
- and
- assembling the electrolyte, anode, and cathode into a battery.
Dependencies are inferred from the claim text.