Positive Electrode Active Material by Solid Phase Synthesis and Method for Manufacturing the Same
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United States of America Patent
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Aug 17, 2023
app pub date -
Sep 23, 2021
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Sep 21, 2020
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Abstract
A positive electrode active material and a method for manufacturing the same are disclosed herein. In some embodiments, a method includes mixing and grinding raw material particles to obtain ground product particles, where the raw material particles are source materials for a lithium composite transition metal oxide, sintering the ground product particles to synthesize the lithium composite transition metal oxide, and disaggregating and classifying the synthesized lithium composite transition metal oxide to obtain a positive electrode active material powder, wherein the mixing and grinding the raw materials includes placing the raw materials and beads in a chamber of a grinding device, where the grinding device includes a rotatable rotor in the chamber, and performing a dry process of mixing and grinding the raw material particles in the chamber by rotating the rotor to give kinetic energy to the beads, causing collisions between the beads and the raw material particles.
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