METHOD FOR PRODUCING CATHODE ACTIVE MATERIAL FOR LITHIUM ION BATTERIES, CATHODE ACTIVE MATERIAL FOR LITHIUM ION BATTERIES OBTAINED BY THE PRODUCTION METHOD, LITHIUM ION BATTERY ELECTRODE, AND LITHIUM ION BATTERY
First Claim
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1. A method for producing a cathode active material for lithium ion batteries, comprising:
- at least a step of carrying out a hydrothermal reaction to produce LiFePO4 by adding elements Li and Fe in Li and Fe salts, which are used as raw materials, in amounts excessively larger than the theoretical amounts required for the hydrothermal reaction, thus synthesizing LiFePO4 which has an average primary particle size of equal to or larger than 30 nm and equal to or smaller than 100 nm.
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Abstract
A method for producing a cathode active material for lithium ion batteries includes a step of synthesizing LiFePO4 by carrying out a hydrothermal reaction using an Li salt, a Fe salt, and a phosphoric acid source as raw materials. Elements Li and Fe in the Li and Fe salts are added to the reaction system in amounts excessively larger than the theoretical amounts required for the hydrothermal reaction. The synthesized LiFePO4 has an average primary particle size of equal to or larger than 30 nm and equal to or smaller than 100 nm.
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7 Claims
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1. A method for producing a cathode active material for lithium ion batteries, comprising:
at least a step of carrying out a hydrothermal reaction to produce LiFePO4 by adding elements Li and Fe in Li and Fe salts, which are used as raw materials, in amounts excessively larger than the theoretical amounts required for the hydrothermal reaction, thus synthesizing LiFePO4 which has an average primary particle size of equal to or larger than 30 nm and equal to or smaller than 100 nm. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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