Supercapacitor-used nickel vanadate material, preparation method thereof and application
A supercapacitor, nickel vanadate technology, applied in chemical instruments and methods, hybrid capacitor electrodes, vanadium compounds, etc., can solve the problems of poor conductivity and surface permeability, few reactive sites, low cycle retention rate, etc., to achieve Low electrochemical impedance, good capacitance retention, and high product purity
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Example Embodiment
[0046] Example 1
[0047] 4 mmol NH 4 VO 3 Completely dissolved in the solvent, the solvent is an aqueous ethanol solution, the volume ratio of ethanol to water is 0.5:1; after ultrasonic treatment for 30 minutes, add 6 mmol Ni(NO) to the above solution under stirring in a water bath at 80°C 3 ) 2 ·6H 2 O, get the reaction precursor liquid. Adjust the pH to about 9 with a basic structure directing agent (ethanolamine aqueous solution), and continue to stir in a water bath for 20 min to obtain a reaction mixture. The reaction mixture was transferred to a 100 mL Teflon-lined stainless steel autoclave. After heating and maintaining at 150°C for 10 hours, it was naturally cooled to room temperature. After centrifugal separation, the synthesized material was washed several times with deionized water and ethanol, and dried in a vacuum oven at 60° C. for 16 hours to obtain a solid nickel vanadate.
[0048] Weigh the nickel vanadate material, acetylene black and PVDF prepared above at a ...
Example Embodiment
[0056] Example 2
[0057] 4 mmol NH 4 VO 3 It is completely dissolved in a solvent, the solvent is an aqueous ethanol solution, and the volume ratio of ethanol to water is 1:1. After ultrasonic treatment for 30 minutes, add 6 mmol Ni(NO 3 ) 2 ·6H 2 O. Adjust the pH to about 7 with a basic structure directing agent (ethanolamine aqueous solution), and continue to stir in a water bath for 20 min. The final mixture was transferred to a 100 mL Teflon-lined stainless steel autoclave. After heating and maintaining at 150°C for 10 hours, it was naturally cooled to room temperature. After solid-liquid separation, the synthesized material was washed several times with deionized water and ethanol, and dried in a vacuum oven at 70° C. for 12 hours to obtain a nickel vanadate solid. The solid powder was tested by SEM, and the structure was massive particles.
Example Embodiment
[0058] Example 3
[0059] 3 mmol NH 4 VO 3 It is completely dissolved in a solvent, the solvent is an aqueous ethanol solution, and the volume ratio of ethanol to water is 0.3:1. After ultrasonic treatment for 30 minutes, add 6 mmol Ni(NO 3 ) 2 ·6H 2 O. Adjust the pH to about 8 with a basic structure directing agent (ethanolamine aqueous solution), and continue to stir in a water bath for 20 min. The final mixture was transferred to a 100 mL Teflon-lined stainless steel autoclave. After heating and maintaining at 150°C for 10 hours, it was naturally cooled to room temperature. Solid-liquid separation, the synthesized material was washed several times with deionized water and ethanol, and dried in a vacuum oven at 70° C. for 24 hours to obtain a nickel vanadate solid. The solid powder is tested by SEM, and the structure is a uniformly dispersed sheet structure.
PUM
Property | Measurement | Unit |
---|---|---|
Specific surface area | aaaaa | aaaaa |
Specific capacitance | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap