Metal/ion filter layer, preparation method thereof, and application thereof in battery

Abstract

The present application discloses a metal / ion filter layer applied to a battery. The metal / ion filter layer is a multilayer stacked material. The ion / metal filter layer can increase the overpotentialof metal deposition, filters and integrates ions and metal, and prevents fresh metal from coming into contact with an electrolyte to produce side reactions. The metal can be just deposited on the surface of a support structure, rather than the surface of the ion / metal filter layer.

Description

technical field

[0001] The application relates to a metal / ion filter layer, its preparation method and its application in batteries, belonging to the field of batteries. Background technique

[0002] As early as 1992, before Sony Corporation of Japan launched the world's first lithium-ion battery, in 1958, a graduate student at the University of California proposed the idea of ​​lithium, sodium and other active metals as battery negative electrodes. research on metal batteries. Since the science and technology at that time could not solve the safety problem of metal batteries, scientists began to pay more attention to the research of lithium-ion batteries with better safety performance. Nowadays, lithium-ion batteries are widely used in various portable electronic devices and new energy vehicles. However, lithium-ion batteries are limited by the research and development bottleneck of graphite negative electrode specific capacity, and cannot meet the needs of people to devel...

Examples

Embodiment 1

[0100] In the first step, ascorbic acid and copper foam were added to the graphene oxide solution and sonicated for 15 minutes. In the second step, the mixture was put into a hydrothermal reactor and heated to 180° C. for 8 hours. In the third step, after being cooled to room temperature, the obtained solid is washed three times with deionized water, and then freeze-dried to obtain the treated metal protection material.

Embodiment 2

[0102] In the first step, ascorbic acid and copper foam were added to the graphene oxide solution and sonicated for 15 minutes. In the second step, the mixture was put into a hydrothermal reactor and heated to 150° C. for 8 hours. In the third step, after being cooled to room temperature, the obtained solid is washed three times with deionized water, and then freeze-dried to obtain the treated metal protection material.

Embodiment 3

[0104] In the first step, ascorbic acid and copper foam were added to the graphene oxide solution and sonicated for 15 minutes. In the second step, the mixture was put into a hydrothermal reaction kettle and heated to 180° C. for 12 hours. In the third step, after being cooled to room temperature, the obtained solid is washed three times with deionized water, and then freeze-dried to obtain the treated metal protection material.

technical field

[0001] The application relates to a metal / ion filter layer, its preparation method and its application in batteries, belonging to the field of batteries. Background technique

[0002] As early as 1992, before Sony Corporation of Japan launched the world's first lithium-ion battery, in 1958, a graduate student at the University of California proposed the idea of ​​lithium, sodium and other active metals as battery negative electrodes. research on metal batteries. Since the science and technology at that time could not solve the safety problem of metal batteries, scientists began to pay more attention to the research of lithium-ion batteries with better safety performance. Nowadays, lithium-ion batteries are widely used in various portable electronic devices and new energy vehicles. However, lithium-ion batteries are limited by the research and development bottleneck of graphite negative electrode specific capacity, and cannot meet the needs of people to devel...

Examples

Embodiment 1

[0100] In the first step, ascorbic acid and copper foam were added to the graphene oxide solution and sonicated for 15 minutes. In the second step, the mixture was put into a hydrothermal reactor and heated to 180° C. for 8 hours. In the third step, after being cooled to room temperature, the obtained solid is washed three times with deionized water, and then freeze-dried to obtain the treated metal protection material.

Embodiment 2

[0102] In the first step, ascorbic acid and copper foam were added to the graphene oxide solution and sonicated for 15 minutes. In the second step, the mixture was put into a hydrothermal reactor and heated to 150° C. for 8 hours. In the third step, after being cooled to room temperature, the obtained solid is washed three times with deionized water, and then freeze-dried to obtain the treated metal protection material.

Embodiment 3

[0104] In the first step, ascorbic acid and copper foam were added to the graphene oxide solution and sonicated for 15 minutes. In the second step, the mixture was put into a hydrothermal reaction kettle and heated to 180° C. for 12 hours. In the third step, after being cooled to room temperature, the obtained solid is washed three times with deionized water, and then freeze-dried to obtain the treated metal protection material.

Images