Preparation method of positive electrode of lithium-ion secondary battery for electric toothbrush or electric shaver

Abstract

The invention relates to a preparation method of a positive electrode of a lithium-ion secondary battery for an electric toothbrush or an electric shaver. The condition that Ir is located on the surface of an active material is ensured by adding the Ir to the surface of the positive active material and adopting a microwave preparation method through a core / shell preparation method; meanwhile, decomposition of an electrolyte is avoided by adding a self-discharge inhibitor to the preparation process of the positive electrode; finally, lithium ions in the electrolyte are prevented from entering a positive electrode material again in the charging process by combining an ageing treatment process of the active material; and through mutual combination and synergistic action of the three aspects, the self-discharge phenomenon of the lithium-ion battery is reduced, the working time is prolonged, and the service time is 50%-60% longer than a common phosphate lithium salt positive electrode material when the positive electrode is used for the electric toothbrush or the electric shaver.

Description

technical field [0001] The invention relates to the technical fields of lithium-ion secondary batteries and smart home, in particular to a method for preparing a positive electrode of a lithium-ion secondary battery used for electric toothbrushes or electric shavers, which can suppress battery self-discharge and improve battery life. Background technique [0002] At present, with the improvement of people's pursuit of quality of life, more and more electric smart products have entered people's family life, such as electric toothbrushes and electric shavers. The development of these electric smart products has brought people's lives This kind of electric smart product is powered by a rechargeable lithium battery when it is in use. When the power is low, the rechargeable lithium battery is charged. If you need to go on a business trip, you often need to carry an electric toothbrush, electric razor Knives, in order to be used normally, usually need to be equipped with a chargin...

AI Technical Summary

Problems solved by technology

[0002] At present, with the improvement of people's pursuit of quality of life, more and more electric smart products have entered people's family life, such as electric toothbrushes and electric shavers. The development of these electric smart products has brought people's lives This kind of electric smart product is powered by a rechargeable lithium battery when it is in use. When the power is low, the rechargeable lithium battery is charged. If you need to go on a business trip, you often need to carry an electric toothbrush, electric razor Knives, in order to be used normally, usually need to be equipped with a charging base, which will cause inconvenience, and this kind of electric smart product is used every day, but usually the use time is short and the storage time is long. If the rechargeable lithium battery can be reduced The self-discharge phenomenon of the battery in the non-use state will prolong the use time of the lithium battery. If you are on a short-term business trip, you don’t need to carry the charging base, which brings great convenience to life and reduces energy waste.