Super-capacity graphene battery and preparation method thereof

A graphene and super-capacity technology, applied in the direction of battery electrodes, lithium storage batteries, battery pack components, etc., can solve the problems of electrochemical stability, high and low temperature resistance performance to be further improved, to alleviate the problem of volume expansion, electrochemical Excellent performance and improved rechargeability

Pending Publication Date: 2022-03-04
深圳市瀚海龙科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the cycle performance, electrochemical stability, and high and low temperature resistance of the battery need to be further improved.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A kind of ultra-capacity graphene battery, it is characterized in that, the positive electrode material of described lithium metal graphene battery is nitrogen-doped nickel cobalt manganese-graphene base compound; The negative electrode material of described lithium metal graphene battery is titanium dioxide quantum dot / Lithium metal / fullerene composite; the diaphragm of the lithium metal graphene battery is made of the following components in parts by weight: 50 parts of hyperbranched polyborosiloxane containing epoxy groups, 10 parts of melamine , 8 parts of nano calcium carbonate.

[0032] The nitrogen-doped nickel-cobalt-manganese-graphene-based composite is a mixture formed by mixing nitrogen-doped nickel-cobalt-manganese ternary material and graphene uniformly at a mass ratio of 3:1; the nitrogen-doped nickel-cobalt-manganese ternary material is Made by the method of Example 1 in Chinese patent document CN107565127B.

[0033] The titanium dioxide quantum dot / met...

Embodiment 2

[0041] A kind of ultra-capacity graphene battery, it is characterized in that, the positive electrode material of described lithium metal graphene battery is nitrogen-doped nickel cobalt manganese-graphene base compound; The negative electrode material of described lithium metal graphene battery is titanium dioxide quantum dot / Lithium metal / fullerene composite; the diaphragm of the lithium metal graphene battery is made of the following components in parts by weight: 53 parts of hyperbranched polyborosiloxane containing epoxy groups, 11 parts of melamine , 8.5 parts of nano calcium carbonate.

[0042] The nitrogen-doped nickel-cobalt-manganese-graphene-based composite is a mixture formed by mixing nitrogen-doped nickel-cobalt-manganese ternary material and graphene uniformly at a mass ratio of 3.5:1; the nitrogen-doped nickel-cobalt-manganese ternary material is Made by the method of Example 1 in Chinese patent document CN107565127B.

[0043] The titanium dioxide quantum dot...

Embodiment 3

[0052] A kind of ultra-capacity graphene battery, it is characterized in that, the positive electrode material of described lithium metal graphene battery is nitrogen-doped nickel cobalt manganese-graphene base compound; The negative electrode material of described lithium metal graphene battery is titanium dioxide quantum dot / Lithium metal / fullerene composite; the diaphragm of the lithium metal graphene battery is made of the following components in parts by weight: 55 parts of hyperbranched polyborosiloxane containing epoxy groups, 13 parts of melamine , 9 parts of nano calcium carbonate.

[0053] The nitrogen-doped nickel-cobalt-manganese-graphene-based composite is a mixture formed by mixing nitrogen-doped nickel-cobalt-manganese ternary material and graphene uniformly at a mass ratio of 4:1; the nitrogen-doped nickel-cobalt-manganese ternary material is Made by the method of Example 1 in Chinese patent document CN107565127B.

[0054] The titanium dioxide quantum dot / met...

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Abstract

The invention discloses a super-capacity graphene battery which is characterized in that a positive electrode material of the lithium metal graphene battery is a nitrogen-doped nickel cobalt manganese-graphene-based compound; a negative electrode material of the lithium metal graphene battery is a titanium dioxide quantum dot/lithium metal/fullerene compound; the diaphragm of the lithium metal graphene battery is prepared from the following components in parts by weight: 50 to 60 parts of hyperbranched polyborosiloxane containing an epoxy group, 10 to 15 parts of melamine and 8 to 10 parts of nano calcium carbonate. The invention also provides a preparation method of the lithium metal graphene battery. The lithium metal graphene battery disclosed by the invention is high in theoretical specific capacity, good in electrochemical stability and excellent in high and low temperature resistance and use safety.

Description

technical field [0001] The invention relates to the technical field of batteries, in particular to a super-capacity graphene battery and a preparation method thereof. Background technique [0002] In recent years, with the advancement of science and technology and the growth of demand, lithium-ion batteries have moved from electronic terminal equipment to electric vehicles [0003] And the field of energy storage technology has become inevitable. Lithium-ion batteries have become the main choice of sustainable power batteries due to their advantages such as high energy density and voltage, long cycle life, low self-discharge rate, no memory effect, stable discharge voltage, fast charge and discharge, and environmental protection. The ideal power supply of the century. [0004] The main constituent materials of lithium-ion batteries include electrolyte, diaphragm materials, positive and negative electrode materials, etc. As the main body of lithium storage, positive and ne...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/052H01M4/52H01M4/36H01M4/48H01M4/50H01M4/583H01M50/446
CPCH01M10/052H01M4/364H01M4/52H01M4/50H01M4/583H01M4/483H01M50/446Y02E60/10
Inventor 蒋胜伟蒋小华
Owner 深圳市瀚海龙科技有限公司
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