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Composite material with oxide @ sulfide core-shell structure as well as preparation method and application of composite material

A composite material, core-shell structure technology, used in the manufacture of hybrid/electric double-layer capacitors, hybrid capacitor electrodes, etc., can solve problems such as low electrical conductivity, and achieve the effects of high material utilization, excellent electrochemical performance, and easy control.

Active Publication Date: 2019-07-19
SHANDONG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As far as the inventors of the present disclosure know, in current research, binary metal oxides, such as FeCo 2 o 4 、NiCo 2 o 4 、CoMoO 4 and NiMoO 4 etc. have good properties, but when they are used alone as electrode materials, low conductivity becomes a huge problem that limits their practical production applications

Method used

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  • Composite material with oxide @ sulfide core-shell structure as well as preparation method and application of composite material
  • Composite material with oxide @ sulfide core-shell structure as well as preparation method and application of composite material
  • Composite material with oxide @ sulfide core-shell structure as well as preparation method and application of composite material

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Embodiment 1

[0066] 1. Core-shell structure NiMoO 4 Nanorod @NiMoS 4 Preparation of nanosheet composites

[0067] Preparation steps:

[0068] 2mmol Ni(NO 3 ) 2 ·6H 2 O and 2 mmol Na 2 MoO 4 2H 2 O was dissolved in 60mL deionized water, stirred evenly for 30 minutes, then transferred to a 100mL reactor, and reacted at a constant temperature of 150°C for 5 hours, and NiMoO was obtained after washing and drying. 4 nanorod material.

[0069] 0.06mol Na 2 S·9H 2 O was dissolved in 60 mL of deionized water, stirred and NiMoO 4 The nanorod materials were poured into a hydrothermal reactor (100mL) and kept at 120°C for 8 hours to obtain the core-shell structure NiMoO 4 Nanorod @NiMoS 4 nanosheet composites.

[0070] 2. Preparation of asymmetric supercapacitors

[0071] NiMoO with core-shell structure 4 Nanorod @NiMoS 4The nanosheet composite material is used as the active material, and the active material, acetylene black, and PVDF adhesive are mixed in a mass ratio of 8:1:1, and ...

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Abstract

The invention provides a composite material with an oxide @ sulfide core-shell structure as well as a preparation method and application of the composite material. A NiMoS4 nanosheet layer is attachedto the surface of a NiMoO4 nanorod to form a NiMoO4 nanorod@ NiMoS4 nanosheet composite material which takes the NiMoO4 nanorod as a core and takes the NiMoS4 nanosheet as a shell. The preparation method comprises the steps of carrying out vulcanization modification on the NiMoO4 nanorod and a sulfur source through a hydrothermal method to obtain the NiMoO4 nanorod@ NiMoS4 nanosheet composite material. According to the method, through the combination of oxide and sulfide, the synergistic effect of the oxide and the sulfide is exerted, so that the electrode material with higher performance isobtained.

Description

technical field [0001] The disclosure belongs to the field of supercapacitor manufacturing, and specifically relates to a composite material with an oxide@sulfide core-shell structure, a preparation method and an application. Background technique [0002] The statements herein merely provide background information related to the present disclosure and may not necessarily constitute prior art. [0003] Today, the energy crisis and environmental pollution have become huge problems restricting the development of human society. The development and utilization of clean, environmentally friendly and efficient new energy sources, such as solar energy, wind energy, and tidal energy, are the only way to solve this problem. Considering that most renewable energy has the disadvantages of sustainability and universality, energy conversion and storage devices have become the top priority of new energy technology research. With the advantages of high power density, long cycle life, fast ...

Claims

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Application Information

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IPC IPC(8): H01G11/24H01G11/30H01G11/46H01G11/86
CPCH01G11/24H01G11/30H01G11/46H01G11/86Y02E60/13
Inventor 刘久荣刘伟高梦娇汪宙吴莉莉王凤龙
Owner SHANDONG UNIV
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