Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Wide-temperature-range supercapacitor electrode material and device and preparation method

A technology for supercapacitors and electrode materials, applied in hybrid capacitor electrodes, hybrid/electric double-layer capacitor manufacturing, protection/regulation of hybrid/electric double-layer capacitors, etc., can solve the problem that there are few researches on bimetallic MOF-based electrode materials , to achieve good practicability, excellent electrochemical performance, and simple assembly process

Pending Publication Date: 2022-07-12
JIANGSU UNIV
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] At present, preliminary studies on the preparation of composite structure materials with controllable morphology based on single metal MOF as electrode materials have been carried out, but the research on bimetallic MOF-based electrode materials prepared by using the synergistic coupling effect of bimetals is still less.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Wide-temperature-range supercapacitor electrode material and device and preparation method
  • Wide-temperature-range supercapacitor electrode material and device and preparation method
  • Wide-temperature-range supercapacitor electrode material and device and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] (1) Surface cleaning and activation of carbon felt: A piece of 1cm×3cm commercial carbon felt was ultrasonically cleaned with 95% mass concentration ethanol solution and deionized water for 15min in turn; 2 SO 4 Solution with 3mol / LHNO 3 solution, and then measure 60mL and 20mL of the two in a volume ratio of 3:1 and pour them into a beaker filled with carbon felt; stir the beaker at a constant speed for 20min at room temperature, then transfer it to a 70°C water bath and continue to stir at a constant speed for 20min; After stirring, the carbon felt was taken out and washed three times with 95% mass concentration ethanol solution; finally, the carbon felt was placed in an oven at 65°C for drying for 5 hours, taken out, and weighed as M. 1 is 0.236g.

[0029] (2) Preparation of bimetallic NiCo-MOF cathode material: First, 1.5 mmol Ni(NO 3 ) 2 ·6H 2 O, 1.5 mmol Co(NO 3 ) 2 ·6H 2 O and 1.5 mmol H 3 BTC was dissolved in 60mL DMF solution, stirred at room temperatu...

Embodiment 2

[0033] (1) Cleaning and activation of carbon felt surface: this step is the same as that of Example 1, and its quality is called M 3 is 0.225g.

[0034] (2) Preparation of bimetallic NiCo-MOF cathode material: First, 1.5 mmol Ni(NO 3 ) 2 ·6H 2 O, 3 mmol Co(NO 3 ) 2 ·6H 2 O and 1.5 mmol H 3 BTC was dissolved in 60ml of DMF solution and stirred at room temperature for 10min at a speed of 900rpm / min; then, the mixed solution was transferred to a 100mL reactor, heated to 120°C at a rate of 5°C / min, and hydrothermally heated at this temperature. 15h; after the reaction is completed and naturally cooled to room temperature, the sample is placed in a centrifuge, and centrifuged at 10,000rpm / min for 3min; then rinsed 3 times with DMF, deionized water and 95% mass concentration ethanol solution in turn; finally, The obtained precipitate was placed in a drying oven and dried at 60 °C for 24 h. After drying, electrochemical tests were performed to obtain a specific capacitance of...

Embodiment 3

[0037] (1) Cleaning and activation of carbon felt surface: this step is the same as that of Example 1, and its quality is called M 5 is 0.215g.

[0038] (2) Preparation of bimetallic NiCo-MOF cathode material: First, 3 mmol Ni(NO 3 ) 2 ·6H 2 O, 1.5 mmol Co(NO 3 ) 2 ·6H 2 O and 1.5 mmol H 3 BTC was dissolved in 60ml of DMF solution and stirred at room temperature for 10min at a speed of 900rpm / min; then, the mixed solution was transferred to a 100mL reactor, heated to 120°C at a rate of 5°C / min, and hydrothermally heated at this temperature. 15h; after the reaction is completed and naturally cooled to room temperature, the sample is placed in a centrifuge, and centrifuged at 10,000rpm / min for 3min; then rinsed 3 times with DMF, deionized water and 95% mass concentration ethanol solution in turn; finally, The obtained precipitate was placed in a drying oven and dried at 60 °C for 24 h. After drying, electrochemical tests were performed to obtain a specific capacitance of...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a super capacitor, in particular to a wide-temperature-range super capacitor electrode material, a wide-temperature-range super capacitor device and a preparation method. The supercapacitor comprises a positive electrode, a negative electrode and a gel electrolyte, and is characterized in that the positive electrode is composed of a NiCo-MOF electrode material with high pseudocapacitance performance, and NiCo-MOF balls similar to raspberry shapes are prepared by adjusting the proportion of two main metal ions of Ni and Co in the NiCo-MOF electrode material. A large number of ultrathin nanosheets exist on the surface of the sphere, the sphere has an ultrahigh specific surface area, and gaps exist between nanosheet layers. And the negative electrode is made of ultrathin MnO2 homemade in a laboratory. And the gel electrolyte is PVA / KOH gel electrolyte. Compared with an aqueous electrolyte, the working voltage range of the gel electrolyte is obviously widened due to the addition of the organic polymer. In addition, the all-solid-state structure of the gel electrolyte can solve the problems of device volume expansion, electrolyte overflow and the like, and a foundation is laid for preparation and practical application of the flexible supercapacitor.

Description

technical field [0001] The invention relates to supercapacitors, in particular to a wide temperature range supercapacitor electrode material and device and a preparation method. Background technique [0002] As an emerging energy storage device, supercapacitors have many advantages such as fast charging and discharging speed and long service life. Supercapacitors are mainly composed of electrode materials, electrolytes, and diaphragms. The electrode material is the most critical factor in determining its device performance. According to the different energy storage mechanisms of electrode materials, supercapacitors can be divided into three categories: electric double layer capacitance type, Faraday pseudocapacitive type and hybrid type. Electric double layer capacitive and Faraday pseudocapacitive materials have their own advantages and disadvantages. A single electric double layer material, such as activated carbon and carbon cloth, has good stability and good rate capa...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/22H01G11/24H01G11/30H01G11/18H01G11/86
CPCH01G11/22H01G11/86H01G11/24H01G11/30H01G11/18Y02E60/13
Inventor 严学华张文静吴苏堂黄鑫鹏潘建梅
Owner JIANGSU UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com