A t2 / o2 / o3 type lithium ion battery positive electrode material and a high shear mixing spray drying preparation method and application thereof

Abstract

This invention discloses a T2 / O2 / O3 type lithium-ion battery cathode material, its preparation method using high-shear mixing and spray drying, and its application, belonging to the technical field of lithium-ion battery cathode materials. This invention employs a high-shear mixing-spray drying method to prepare Li... + / Na + Ion exchange, firstly synthesizing sodium-containing layered oxides (Na) by high-temperature calcination. m [Li x Ni y Co z Mn 1‑x‑y‑z [O2), then mix it with lithium salt using a high-shear homogenizer, followed by spray drying for ion exchange, and finally filter and wash to obtain lithium-containing layered oxide (Na). m [Li x Ni y Co z Mn 1‑x‑y‑z This method can prepare not only lithium-poor T2 phase layered structures, but also lithium-rich metastable O2 phase layered structures and thermodynamically stable O3 phase layered oxides. Furthermore, it can simultaneously prepare T2 / O2 and O2 / O3 composite phase layered oxides. The oxide particles prepared by this method are composed of micron-sized single crystals with controllable particle size, good uniformity, and excellent cycle stability, making them widely applicable in the electronics and power battery markets.

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