Materials prepared by metal extraction

摘要

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.

主权项

1. A method of forming an active material for a battery electrode, comprising:
providing a starting material comprising a lithium-rich layered oxide; mixing the starting material with an activating material comprising a metal-halide compound; and annealing the mixture for a time and temperature such the starting material reacts with the metal-halide compound to form the activated material, wherein the activated material is characterized by an expanded crystalline lattice as compared to the starting material.