Preparation method of battery composite material and precursor thereof
AssigneeAdvanced Lithium Electrochemistry Co., Ltd.
InventorsKUAN-YIN FU, Jing-Xuan Wang, An-Feng Huang
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Abstract
The present invention provides a preparation method of a battery composite material, wherein a precursor with the chemical formula FePO4 is formed by introducing air or oxygen during calcination. The precursor is then reacted with a first reactant containing lithium atoms and a carbon source to form a battery composite material with the chemical formula LiFePO4.
Claims13
A preparation method of a battery composite material, comprising steps of:
- step 1:
- reacting a compound capable of releasing a phosphate ion with iron powders to produce a first product in a slurry form;
- step 2:
- forming a precursor via grinding, drying, and calcining, wherein the precursor has a chemical formula of FePO4;
- and
- step 3:
- reacting the precursor with a first reactant containing lithium atoms and a carbon source containing carbon atoms to form a battery composite material with a chemical formula of LiFePO4;
- wherein air or oxygen is directly introduced during calcining.
A preparation method of a battery composite material, comprising steps of:
- reacting a precursor, with a chemical formula of FePO4, with a first reactant containing lithium atoms and a carbon source containing carbon atoms, thereby forming a battery composite material with a chemical formula of LiFePO4.
A preparation method of a precursor for a battery composite material, comprising steps of:
- reacting a compound capable of releasing a phosphate ion with iron powders to produce a first product in a slurry form;
- and
- forming a precursor via grinding, drying, and calcining, wherein the precursor has a chemical formula of FePO4.
Dependencies are inferred from the claim text.