Flexible honeycomb bimetallic nitride supercapacitor electrode and preparation method thereof
What is Al technical title?
Al technical title is built by PatSnap Al team. It summarizes the technical point description of the patent document.
A supercapacitor and bimetal technology, which is applied in hybrid capacitor electrodes, hybrid/electric double layer capacitor manufacturing, electrolytic capacitors, etc., can solve the problems of limited nickel-cobalt nitride materials, insufficient superelectric performance, and cumbersome process. The effect of excellent cycle performance, excellent cycle stability and simple preparation process
Active Publication Date: 2021-08-17
HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
View PDF4 Cites 4 Cited by
Summary
Abstract
Description
Claims
Application Information
AI Technical Summary
This helps you quickly interpret patents by identifying the three key elements:
Problems solved by technology
Method used
Benefits of technology
Problems solved by technology
However, due to a series of problems such as high cost, low mass production, cumbersome process, and insufficient superelectric performance, the application of nickel-cobalt nitride materials is still subject to many restrictions.
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
Click on the blue label to locate the original text in one second.
Reading with bidirectional positioning of images and text.
Smart Image
Examples
Experimental program
Comparison scheme
Effect test
Embodiment 1
[0038] A method for preparing a flexible honeycomb double metal nitride electrode, comprising the following steps:
[0039] S1. Dissolve cobalt nitrate and nickel nitrate in 30mL methanol, then add 2-methylimidazole and continue to stir for 0.5h to obtain a mixed solution; wherein, in the mixed solution, the molar concentration of cobalt nitrate, nickel nitrate, and 2-methylimidazole 10mmol / L, 10mmol / L, 40mmol / L respectively;
[0040] S2. Put the flexible porous carbon cloth into 1M hydrochloric acid, acetone, ethanol and deionized water in sequence, and after each ultrasonic cleaning for 10 min, vacuum dry at 60° C. for 12 h.
[0041] S3. Put the above mixed solution and the cleaned flexible porous carbon cloth into an autoclave in turn, and keep them warm at 120° C. for 14 hours to obtain a Ni-Co LDH / CC precursor film;
[0042] S4. Place the Ni-Co LDH / CC precursor thin film in a tube furnace, inject flowing ammonia gas into the tube furnace, raise the temperature of the tub...
Embodiment 2
[0044] A kind of preparation method of flexible honeycomb double metal nitride electrode
[0045] Compared with Example 1, the only difference is that S4 is different, specifically:
[0046] S4. Place the Ni-Co LDH / CC precursor thin film in a tube furnace, inject flowing ammonia gas into the tube furnace, raise the temperature of the tube furnace to 200 °C at a rate of 2 °C / min, and keep it for 2 hours to obtain Ni -Co-N / CC porous film.
Embodiment 3
[0048] A kind of preparation method of flexible honeycomb double metal nitride electrode
[0049] Compared with Example 1, the only difference is that S4 is different, specifically:
[0050] S4. Place the Ni-Co LDH / CC precursor thin film in a tube furnace, inject flowing ammonia gas into the tube furnace, raise the temperature of the tube furnace to 400 °C at a rate of 2 °C / min, and keep it for 2 hours to obtain Ni -Co-N / CC porous film.
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
Login to view more
Abstract
The invention discloses a flexible honeycomb bimetallic nitride supercapacitor electrode and a preparation method, and relates to the technical field of supercapacitor electrode materials, and the preparation method comprises the following steps: dissolving cobalt nitrate and nickel nitrate in methanol, then adding 2-methylimidazole, and performing stirring to obtain a methanol solution of cobalt and nickel; sequentially putting hydrochloric acid, acetone, ethanol and deionized water into the flexible porous conductive substrate, performing ultrasonic cleaning, and performing vacuum drying; adding a flexible porous conductive substrate and a methanol solution of cobalt and nickel into an autoclave, carrying out heating reaction to obtain a Ni-Co LDH precursor sample grown on the substrate, carrying out cleaning and vacuum drying, then putting the Ni-Co LDH precursor sample into a tubular furnace, introducing a nitrogen source, carrying out heating and heat preservation reaction to obtain a Ni-Co-N porous film sample grown on the substrate, and thus obtaining the electrode. According to the invention, a solvothermal method is adopted for in-situ growth of the three-dimensional layered multistage porous honeycomb Ni-Co-N porous film on the flexible porous conductive substrate, and the porous film shows excellent cycling stability and ultrahigh rate capability when being used as a supercapacitor electrode.
Description
technical field [0001] The invention relates to the technical field of supercapacitor electrode materials, in particular to a flexible honeycomb double-metal nitride supercapacitor electrode and a preparation method. Background technique [0002] With the continuous development of society, people's demand for energy continues to increase. At the same time, due to the gradual depletion of traditional fossil fuels and the increasingly serious environmental pollution problems, it is necessary to explore and develop new environmentally friendly, green, efficient and sustainable new energy sources. become increasingly urgent. As a new type of green energy storage device, supercapacitors have the advantages of high power density, fast charging and fast discharging, good cycle stability, and green safety. , smart grid and many other fields have broad application prospects. Supercapacitors are mainly composed of electrode materials (positive and negative electrode materials), sepa...
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
Application Date:The date an application was filed.
Publication Date:The date a patent or application was officially published.
First Publication Date:The earliest publication date of a patent with the same application number.
Issue Date:Publication date of the patent grant document.
PCT Entry Date:The Entry date of PCT National Phase.
Estimated Expiry Date:The statutory expiry date of a patent right according to the Patent Law, and it is the longest term of protection that the patent right can achieve without the termination of the patent right due to other reasons(Term extension factor has been taken into account ).
Invalid Date:Actual expiry date is based on effective date or publication date of legal transaction data of invalid patent.
Login to view more 
Login to view more