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Lithium ion battery electrode containing micro-nano graphene coated single crystal positive electrode material

A graphene-coated, lithium-ion battery technology, applied in battery electrodes, nanotechnology, nanotechnology, etc.

Active Publication Date: 2020-11-20
宁夏汉尧富锂科技有限责任公司 +1
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0003] Graphene, as a material with good conductivity, is very suitable as a coating material for surface modification of lithium-ion cathode materials, but there is no specific structure of the coating material that can effectively improve the overall performance of the battery. Therefore, the present invention provides a lithium-ion battery electrode containing a single crystal positive electrode material coated with micro-nano-scale graphene, and explores the microscopic properties of the positive-electrode material coated with micro-nano-scale graphene to make it Can effectively improve the overall performance of the battery

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  • Lithium ion battery electrode containing micro-nano graphene coated single crystal positive electrode material

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Embodiment 1

[0065] Embodiment 1 of the present invention provides a lithium-ion battery electrode containing a single crystal positive electrode material coated with micro-nano-scale graphene, and the preparation raw materials include a single-crystal positive electrode material coated with micro-nano-scale graphene, a conductive agent, and a binder -1 and the current collector; wherein, the raw materials for the preparation of the micro-nano-scale graphene-coated single crystal positive electrode material include graphene and single crystal positive electrode material, and the positive electrode material is LiCoO 2 ; The positive electrode material is a layered single crystal structure, which belongs to the R-3m space group; the current collector is aluminum foil, and the electrical conductivity agent is carbon black;

[0066] Micro-nano-scale graphene refers to graphene including micro-scale graphene and nano-scale graphene; the particle size of nano-scale graphene is 120-130nm; the part...

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Abstract

The invention relates to the technical field related to lithium ion batteries, and particularly provides a lithium ion battery electrode containing a micro-nano graphene coated single crystal positiveelectrode material. Raw materials comprise the micro-nano graphene coated single crystal positive electrode material, a conductive agent, a binder and a current collector, wherein the preparation rawmaterials of the micro-nano graphene coated single crystal positive electrode material include graphene and a single-crystal positive electrode material, and the single-crystal positive electrode material is a layered single-crystal structure. The invention provides the lithium ion battery electrode containing the micro-nano graphene coated single crystal positive electrode material. Crystal forms and particle size distribution of the single crystal positive electrode material before and after coating are basically consistent, and when the micro-nano graphene coated positive electrode material meeting the conditions is used as the preparation raw material of the battery electrode, comprehensive performance of the battery is favorably optimized.

Description

technical field [0001] The invention relates to the technical field related to lithium-ion batteries, and more specifically, the invention provides a lithium-ion battery electrode containing a single-crystal positive electrode material coated with micro-nano graphene. Background technique [0002] With the development of lithium-ion batteries and related material preparation technologies in recent years, lithium-ion batteries have undoubtedly replaced nickel-metal hydride, lead-acid and other batteries to become a new generation of power sources with high technological content and the most widely used. High, good cycle performance, good safety performance and other advantages, known as "the most promising chemical power source", China has become one of the fastest-growing and most active regions in the world for lithium-ion batteries. Lithium-ion battery cathode materials are one of the key factors determining battery performance. Therefore, under the current situation, it i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/62H01M4/131H01M10/0525H01M10/058B82Y30/00B82Y40/00
CPCB82Y30/00B82Y40/00H01M4/131H01M4/625H01M10/0525H01M10/058Y02E60/10Y02P70/50
Inventor 王欣全步绍宁杜萍王浩温宇张永龙于春奇王哲刘晓雨徐昊刘嫄嫄邬素月李来强
Owner 宁夏汉尧富锂科技有限责任公司
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