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Nickel cobaltate-titanium nitride array electrode material and its preparation method and energy storage application

An array electrode, nickel cobalt oxide technology, which is applied in the field of nickel cobalt oxide-titanium nitride array electrode materials and its preparation, can solve the problems of reduction of reactive active sites, reduction of specific surface area, unfavorable energy storage properties, etc., and achieve good Industrial production prospects, increased specific surface area, reliable and easy preparation process

Active Publication Date: 2022-05-13
WUXI INST OF COMMERCE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, designing the electrode material into a nanowire or nanotube structure increases the transport space for electrolyte ions, and at the same time, compared with powder samples, its specific surface area will be significantly reduced, resulting in a reduction in reactive sites, which is also not conducive to the performance of energy storage properties. , so how to design a structure that ensures sufficient electrolyte ion transport space without reducing the reactive active sites is more conducive to the performance of electrode materials

Method used

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  • Nickel cobaltate-titanium nitride array electrode material and its preparation method and energy storage application
  • Nickel cobaltate-titanium nitride array electrode material and its preparation method and energy storage application
  • Nickel cobaltate-titanium nitride array electrode material and its preparation method and energy storage application

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Embodiment 1

[0040] Schematic diagram of the structure of the integrated flexible three-dimensional ordered multi-level channel nickel cobaltate / titanium nitride array electrode material of the present invention, see for details figure 1 , including a flexible substrate (1), a titanium nitride nanowire array core (2) with three-dimensional ordered multi-level channels, and a nickel cobalt oxide shell (3); the nickel cobalt oxide shell (3) is completely wrapped in titanium nitride The surface of the inner core (2) of the nanowire array; the titanium nitride nanowire array has highly regular, open, interconnected, and array-structured macropore channels, and the pore walls are composed of titanium nitride nanoparticles with mesoporous or microporous structures.

[0041] The flexible substrate (1) includes carbon fiber, flexible carbon cloth, flexible carbon paper, flexible carbon foam and other flexible substrate materials.

[0042] The three-dimensional ordered multi-level pore titanium nit...

Embodiment 2

[0046] The preparation process flow chart of the integrated flexible three-dimensional ordered multi-level channel nickel cobaltate / titanium nitride array electrode material of the present invention, see for details figure 2 , mainly including: (A) preparing monodisperse polystyrene microspheres; (B) using centrifugal self-assembly combined with heating and sedimentation to assemble monodisperse colloidal microspheres into neatly arranged hexagonal close-packed colloidal crystals on a flexible substrate Template; (C) The integrated three-dimensional ordered multi-level pore structure TiN core grown on the flexible substrate was prepared by vacuum impregnation combined with post-calcination method; (D) The integrated three-dimensional organic Four steps to grow nickel cobalt oxide shell on the surface of ordered multi-level channel structure titanium nitride:

[0047] (A) Preparation of monodisperse polystyrene microspheres: Potassium persulfate was used as an initiator, and s...

Embodiment 3

[0057] The mass transfer mechanism diagram of the integrated flexible three-dimensional ordered multi-level channel nickel cobaltate / titanium nitride array electrode material of the present invention, see for details image 3. The electrode material of the present invention has ordered nanometer-level interpenetrating pores, which greatly shortens the diffusion distance of electrolyte ions and is more conducive to the charge transfer between the active material and the electrolyte interface. The open macropore channel is more conducive to the transport of electrolyte ions, greatly reducing the mass transfer distance, and the mesoporous structure of the pore wall provides a high specific surface area, which increases the contact area between the electrode and the electrolyte and increases the reactive sites. The advantages of these structures can effectively improve the energy storage performance of electrode materials.

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Abstract

The invention discloses a nickel cobaltate / titanium nitride array electrode material, which has a three-dimensional ordered multi-level pore structure, and the open macropores provide more active sites and transport spaces for the adsorption and transport of electrolyte ions in electrode reactions. , high conductivity titanium nitride provides a fast electron transport channel for nickel cobaltate, which effectively solves the defects of electrode material electrolyte ions and electrons that are difficult to transport quickly, resulting in poor rate performance and low energy storage efficiency. The mesoporous structure of the pore wall effectively increases the specific surface area of ​​the material and provides more active sites for the reaction, thereby improving the electrochemical energy storage performance. And it can be directly used as a new energy storage electrode material, which has high practical value and industrial production potential; the preparation process of the electrode material is reliable and easy, and has a good industrial production prospect.

Description

technical field [0001] The invention relates to the technical field of energy materials, in particular to a nickel cobaltate-titanium nitride array electrode material, a preparation method thereof, and an energy storage application thereof. Background technique [0002] Electrode materials are the core elements that affect the performance of energy storage components such as supercapacitors and batteries. At present, the demand for high-energy storage devices in human life is becoming more and more urgent. More and more mechanical equipment and automobiles are gradually using energy storage devices such as supercapacitors as power sources. Correspondingly, it is very necessary to improve the performance of electrode materials. . The penetration of electrolyte ions, the transport of reactant products, and the transport efficiency of electrons are important factors affecting the energy storage properties of electrode materials; by adjusting the morphology of electrode materia...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G11/24H01G11/30H01G11/86
CPCH01G11/24H01G11/30H01G11/86
Inventor 路露周小红徐东陈和娟张睿
Owner WUXI INST OF COMMERCE
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