Aqueous lithium ion battery electrode, preparation method of electrode and aqueous lithium ion battery

A lithium-ion battery and lithium-ion technology, applied in electrode manufacturing, secondary batteries, active material electrodes, etc., can solve the problems of low battery operating voltage, low charge and discharge voltage, and difficulty in finding electrode materials
CN103904291AInactive Publication Date: 2014-07-02INNER MONGOLIA RUISHENG GRAPHITE NEW MATERIAL CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
INNER MONGOLIA RUISHENG GRAPHITE NEW MATERIAL CO LTD
Publication Date
2014-07-02
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses an aqueous lithium ion battery electrode, a preparation method of the electrode and an aqueous lithium ion battery. The aqueous lithium ion battery electrode comprises a positive electrode current collector or a negative electrode current collector, a positive electrode active material layer or a negative electrode active material layer and protective layers, wherein the positive electrode active material layer is combined on the surface of the positive electrode current collector; the negative electrode active material layer is combined on the surface of the negative electrode current collector; the protective layers are combined on the surface of the positive electrode active material layer or the negative electrode active material layer and hole walls in the positive electrode active material layer and the negative electrode active material layer. Materials adopted by the protective layers are polymers containing lithium ions. Through the aqueous lithium ion battery electrode, the direct contact between the positive electrode active material layer or the negative electrode active material layer and water of an aqueous electrolyte can be prevented, so that hydrogen evolution reaction and oxygen evolution reaction of the aqueous electrolyte can be prevented, thus side reaction between active substances and water can be prevented. The aqueous lithium ion battery comprises a positive aqueous lithium ion battery electrode and a negative aqueous lithium ion battery electrode, thus giving high voltage and energy density to the aqueous lithium ion battery.
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Description

technical field

[0001] The invention belongs to the technical field of batteries, and in particular relates to an electrode of an aqueous lithium ion battery, a preparation method thereof, and an aqueous lithium ion battery. Background technique

[0002] With the low-carbon economy in the ascendant, lithium-ion batteries are actively developing in the direction of power vehicles and grid energy storage. The development of lithium-ion batteries with high energy density, long cycle life, high safety and low cost has become the focus of industry research.

[0003] The current organic solvent system lithium-ion battery has the characteristics of high voltage, high energy density, and good cycle performance. It is widely used in portable digital products, such as mobile phones, cameras, and notebook computers. At the same time, it has gradually begun to be used in the field of electric bicycles. However, because the battery uses organic solvents, the safety of the battery has alw...

Claims

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