Method for manufacturing lithium-containing composite oxide
AssigneeSemiconductor Energy Laboratory Co., Ltd.
InventorTomoya FUTAMURA
Life of this patent
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Abstract
To simply manufacture a lithium-containing oxide at lower manufacturing cost. A method for manufacturing a lithium-containing composite oxide expressed by a general formula LiMPO4 (M is one or more of Fe (II), Mn (II), Co (II), and Ni (II)). A solution containing Li and P is formed and then is dripped in a solution containing M (M is one or more of Fe (II), Mn (II), Co (II), and Ni (II)) to form a mixed solution. By hydrothermal method using the mixed solution, a single crystal particle of a lithium-containing composite oxide expressed by the general formula LiMPO4 (M is one or more of Fe (II), Mn (II), Co (II), and Ni (II)) is manufactured.
Claims36
A method for manufacturing a lithium-containing composite oxide expressed by a general formula LiMPO4 (M is one or more of Fe (II), Mn (II), Co (II), and Ni (II)), comprising:
- forming a solution containing Li and P;
- dripping the solution containing Li and P in a solution containing M (M is one or more of Fe (II), Mn (II), Co (II), and Ni (II)) to form a mixed solution;
- and
- performing a hydrothermal method using the mixed solution so that the lithium-containing, composite oxide expressed by the general formula LiMPO4 (M is one or more of Fe (II), Mn (II), Co (II), and Ni (II)) is formed.
A method for manufacturing a lithium-containing composite oxide expressed by a general formula LiMPO4 (M is one or more of Fe (II), Mn (II), Co (II), and Ni (II), comprising:
- forming a first solution in which a lithium compound is dissolved;
- forming a second solution in which a phosphorus compound is dissolved;
- forming a third solution in which one or more of an iron (II) compound, a manganese (II) compound, a cobalt (II) compound, and a nickel (II) compound are dissolved;
- forming a first mixed solution by mixing the first solution and the second solution;
- forming a second mixed, solution by dripping the first mixed solution in the third solution;
- and
- forming, single crystal particles of a lithium-containing composite oxide by heating the second mixed solution using a hydrothermal method.
A method for manufacturing an electrode, comprising:
- forming a solution containing Li and P;
- dripping the solution containing Li and P in a solution containing M (M is one or more of Fe (II), Mn (II), Co (II), and Ni (II)) to form a mixed solution;
- performing a hydrothermal method using the mixed solution so that the lithium-containing composite oxide expressed by the general formula LiMPO4 (M is one or more of Fe (II), Mn (II), Co (II), and Ni (II)) is formed;
- and
- forming a positive electrode using the lithium-containing composite oxide.
A method for manufacturing an electrode, comprising:
- forming a first solution in which a lithium compound is dissolved;
- forming a second solution in which a phosphorus compound is dissolved;
- forming third solution in which one or more of an iron (II) compound, a manganese (II) compound, a cobalt (II) compound, and a nickel (II) compound are dissolved;
- forming a first mixed solution by mixing the first solution and the second solution;
- forming a second mixed solution by dripping the first mixed solution in the third solution;
- forming single crystal particles of a lithium-containing composite oxide by heating the second mixed solution using a hydrothermal method;
- and
- forming a positive electrode using the lithium-containing composite oxide.
Dependencies are inferred from the claim text.