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Cobalt-carbon composite material, electrode material, lithium ion capacitor and preparation method thereof

A technology of carbon composite materials and lithium ions, applied in the field of capacitors, can solve the problems of low power density, energy density and cycle life, and achieve high power density

Pending Publication Date: 2022-01-11
QINGDAO UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In the embodiment of the present application, a cobalt-carbon composite material, electrode material, lithium ion capacitor and its preparation method are provided to help solve the problems of low power density, energy density and cycle life of lithium ion capacitors in the prior art

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  • Cobalt-carbon composite material, electrode material, lithium ion capacitor and preparation method thereof
  • Cobalt-carbon composite material, electrode material, lithium ion capacitor and preparation method thereof
  • Cobalt-carbon composite material, electrode material, lithium ion capacitor and preparation method thereof

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Embodiment Construction

[0026] In order to enable those skilled in the art to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described The embodiments are only some of the embodiments of the present application, but not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the scope of protection of this application.

[0027] A cobalt-carbon composite material provided in an embodiment of the present application includes a carbon base and cobalt particles, the cobalt particles are evenly distributed on the carbon base, and the diameter of the cobalt particles is 1-10 nm. For example, 2nm, 5nm, etc.

[0028] In an optional embodiment, the mass ratio of ...

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Abstract

The embodiment of the invention discloses a cobalt-carbon composite material, an electrode material, a lithium ion capacitor and a preparation method thereof. The cobalt-carbon composite material comprises a carbon base and cobalt particles, the cobalt particles are uniformly distributed on the carbon base, and the size of the cobalt particles is 1-10nm. The cobalt-carbon composite material provided by the embodiment of the invention performs energy storage based on a spin capacitance effect of interface charge storage, and has relatively high power density, energy density and cycle life when being applied to a lithium ion capacitor.

Description

[0001] This application claims the priority of the Chinese patent application with the application number 202010656576.9 submitted to the China Patent Office on July 9, 2020. References are incorporated in this application. technical field [0002] The present application relates to the technical field of capacitors, in particular to a cobalt-carbon composite material, an electrode material, a lithium ion capacitor and a preparation method thereof. Background technique [0003] With the continuous improvement of social productivity and the vigorous development of new energy vehicles and electronic equipment, renewable energy and new energy have attracted widespread attention. The development of renewable energy such as tidal energy, solar energy, and wind energy can effectively alleviate the contradictions between energy, resources, and the environment faced in the process of economic development. However, due to the discontinuity and instability of renewable clean energy s...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L43/10H01L43/12H10N50/01
CPCH10N50/01H10N50/85
Inventor 李洪森胡正强李强赵林一刘永帅朱世凯
Owner QINGDAO UNIV