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Lithium intercalation manganese dioxide-titanium nitride nanotube composite material and preparing method and application thereof

A technology of manganese dioxide and composite materials, which is applied in the manufacture of hybrid/electric double-layer capacitors, double-layer capacitors, hybrid capacitors, etc., can solve the problems of electrode material conductivity and storage performance to be further improved, and achieve high conductivity , high power storage performance, high current charge and discharge performance

Active Publication Date: 2014-08-13
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the existing lithium-ion capacitors generally use activated carbon materials for the positive electrode, lithium-intercalated carbon materials or lithium-intercalated polyoxometalate materials for the negative electrode, and lithium-ion organic materials for the electrolyte. The electrical performance needs to be further improved

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  • Lithium intercalation manganese dioxide-titanium nitride nanotube composite material and preparing method and application thereof
  • Lithium intercalation manganese dioxide-titanium nitride nanotube composite material and preparing method and application thereof
  • Lithium intercalation manganese dioxide-titanium nitride nanotube composite material and preparing method and application thereof

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Embodiment 1

[0033] Lithium intercalation manganese dioxide-titanium nitride nanotube composite material, its preparation method comprises the following steps:

[0034] (1) Preparation of titanium nitride nanotube electrode matrix material: 0.2mol / L ammonium fluoride, 0.5mol / L phosphoric acid and 9.0mol / L ethylene glycol solution are used as the reaction electrolyte solution, and the anodic oxidation synthesis method is adopted, and the working voltage is 30V, and the reaction time was 3h to obtain titanium dioxide nanotubes. Then, they were calcined at 450° C. for 2 hours in an air atmosphere and 800° C. for 2 hours in an ammonia atmosphere to obtain titanium nitride nanotube electrode matrix materials.

[0035] (2) Lithium intercalated manganese dioxide-titanium nitride nanotube electrode material preparation: using titanium nitride nanotube as working electrode, platinum sheet as auxiliary electrode, saturated calomel Hg / Hg 2 Cl 2 As a reference electrode, lithium intercalated mangane...

Embodiment 2

[0040] Lithium intercalation manganese dioxide-titanium nitride nanotube composite material, its preparation method comprises the following steps:

[0041] (1) Preparation of titanium nitride nanotube electrode matrix material: 0.1mol / L ammonium fluoride, 0.4mol / L phosphoric acid and 8.0mol / L ethylene glycol solution are used as the reaction electrolyte solution, and the anodic oxidation synthesis method is adopted, and the working voltage is 25V, and the reaction time was 4h to obtain titanium dioxide nanotubes. Then, they were calcined at 400° C. for 3 hours in an air atmosphere and 750° C. for 3 hours in an ammonia atmosphere to obtain a titanium nitride nanotube electrode base material.

[0042] (2) Lithium intercalated manganese dioxide-titanium nitride nanotube electrode material preparation: using titanium nitride nanotube as working electrode, platinum sheet as auxiliary electrode, saturated calomel Hg / Hg 2 Cl 2 As a reference electrode, lithium intercalated manganes...

Embodiment 3

[0047] Lithium intercalation manganese dioxide-titanium nitride nanotube composite material, its preparation method comprises the following steps:

[0048] (1) Preparation of titanium nitride nanotube electrode matrix material: 0.3mol / L ammonium fluoride, 0.5mol / L phosphoric acid and 10.0mol / L ethylene glycol solution are used as the reaction electrolyte solution, and the anodic oxidation synthesis method is adopted, and the working voltage is 35V, and the reaction time was 2h to obtain titanium dioxide nanotubes. Then, they were calcined at 500° C. for 1 h in an air atmosphere and calcined at 850° C. for 1 h in an ammonia atmosphere to obtain a titanium nitride nanotube electrode base material.

[0049] (2) Lithium intercalated manganese dioxide-titanium nitride nanotube electrode material preparation: using titanium nitride nanotube as working electrode, platinum sheet as auxiliary electrode, saturated calomel Hg / Hg 2 Cl 2 As a reference electrode, lithium intercalated man...

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Abstract

The invention provides a lithium intercalation manganese dioxide-titanium nitride nanotube composite material which comprises titanium nitride nanotubes and lithium intercalation manganese dioxide deposited inside the titanium nitride nanotubes and gaps between the titanium nitride nanotubes. A coaxial heterogeneous nanotube array structure is formed by the titanium nitride nanotubes and the lithium intercalation manganese dioxide deposited inside the titanium nitride nanotubes and the gaps between the titanium nitride nanotubes. The invention further provides a preparing method of the composite material and application of the composite material to lithium ion supercapacitor preparation. The lithium intercalation manganese dioxide-titanium nitride nanotube composite material is high in electric conductivity, electricity storage performance and large-current charging and discharging performance and capable of being prepared through a simple and feasible electrochemistry intercalation-deposition reaction synthesis method.

Description

technical field [0001] The invention belongs to the field of electrochemical energy storage materials, in particular to a lithium-intercalated manganese dioxide-titanium nitride nanotube composite material, to a preparation method of the electrode material, and to the application of the electrode material in a lithium-ion supercapacitor application. Background technique [0002] Energy is an important basis for human survival and sound social development. With the rapid growth of population and rapid economic development, petrochemical energy is becoming increasingly exhausted. The energy crisis has become a difficult problem for all countries in the world today. How to develop and store new energy And rational utilization is directly related to the sustainable development of human society. Therefore, the development of new energy is a major issue that must be solved in the 21st century. With the advancement of science and technology, the development of electric vehicles, ...

Claims

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Application Information

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IPC IPC(8): H01G11/50H01G11/86H01G11/06
CPCY02E60/13
Inventor 谢一兵
Owner SOUTHEAST UNIV
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