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

Preparation method of NiMoO4/MoS2/NiS nanocomposite

A nano-composite material, 6mo7o24 technology, applied in the manufacture of hybrid/electric double layer capacitors, hybrid capacitor electrodes, etc., can solve the problem of unsatisfactory cycle performance, and achieve the effects of improving poor cycle stability, inhibiting agglomeration, and scientific and reasonable methods.

Active Publication Date: 2015-11-25
NORTHEAST DIANLI UNIVERSITY
View PDF2 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

DPCai et al. used sodium molybdate and nickel acetate as raw materials, and synthesized sea urchin-like NiMoO by hydrothermal reaction at 140 °C for 12 h. 4 Nano-microspheres, studies have shown that the material has a high specific capacitance (the specific capacitance is 920.8F / g when the current density is 2A / g), but the capacitance remains 74.5% after 2000 cycles, and the cycle performance is not ideal (D.P.Cai, D.D.Wang, B.Liu, etal.ACSApplMat.Interfaces.2013,5:12905–12910.)

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
  • Preparation method of NiMoO4/MoS2/NiS nanocomposite
  • Preparation method of NiMoO4/MoS2/NiS nanocomposite

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A kind of NiMoO of embodiment 1 4 / MoS 2 / NiS nanocomposite preparation method, the preparation steps are:

[0024] (1) Weighing (NH 4 ) 6 Mo 7 o 24 ?4H 2 O0.21mmol, Ni(CH 3 COO) 2 ?4H 2 O0.74mmol and H 2 NCSNH 2 Add 1.47mmol into 70mL ultrapure water, stir for 20min;

[0025] (2) Transfer the mixed solution to a reaction kettle with a volume of 100mL, and react at 160°C for 24h;

[0026] (3) After the reaction, cool to room temperature and centrifuge at a speed of 3000r / min for 4min. The centrifuged product is washed three times with ultrapure water, then washed three times with absolute ethanol, and dried in a vacuum oven at 60°C 12h;

[0027] (4) Place the dried product in a vacuum gas-filled tube furnace under N 2 Under the protection of , calcined at 400°C for 2h, and the heating rate was 4°C / min, to obtain NiMoO 4 / MoS 2 / NiS nanocomposites.

Embodiment 2

[0028] A kind of NiMoO of embodiment 2 4 / MoS 2 / NiS nanocomposite preparation method, the preparation steps are:

[0029] (1) Weighing (NH 4 ) 6 Mo 7 o 24 ?4H 2 O0.24mmol, Ni(CH 3 COO) 2 ?4H 2 O1.34mmol, H 2 NCSNH 2 Add 3.36mmol and NaCl1.68mmol into 70mL ultrapure water, stir for 20min;

[0030] (2) Transfer the mixed solution to a reaction kettle with a volume of 100mL, and react at 170°C for 24h;

[0031] (3) After the reaction, cool to room temperature and centrifuge at a speed of 3000r / min for 4min. The centrifuged product is washed three times with ultrapure water, then washed three times with absolute ethanol, and dried in a vacuum oven at 60°C 12h;

[0032] (4) Place the dried product in a vacuum gas-filled tube furnace under N 2 Under the protection of , it was calcined at 400°C for 2h, and the heating rate was 4°C / min.

Embodiment 3

[0033] A kind of NiMoO of embodiment 3 4 / MoS 2 / NiS nanocomposite preparation method, the preparation steps are:

[0034] (1) Weighing (NH 4 ) 6 Mo 7 o 24 ?4H 2 O0.30mmol, Ni(CH 3 COO) 2 ?4H 2 O2.10mmol, H 2 NCSNH 2 Add 8.40mmol and NaCl4.20mmol to 70mL ultrapure water, stir for 20min;

[0035] (2) Transfer the mixed solution to a reaction kettle with a volume of 100mL, and react at 180°C for 20h;

[0036] (3) After the reaction, cool to room temperature and centrifuge at a speed of 3000r / min for 4min. The centrifuged product is washed three times with ultrapure water, then washed three times with absolute ethanol, and dried in a vacuum oven at 60°C 12h;

[0037] (4) Place the dried product in a vacuum gas-filled tube furnace under N 2 Under the protection of , it was calcined at 400°C for 2h, and the heating rate was 4°C / min.

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 preparation method of a NiMoO4 / MoS2 / NiS nanocomposite. The preparation method is characterized in that raw materials including ammonium molybdate, nickelous acetate and thiourea are solved in 70mL of ultrapure water by taking sodium chloride as a structure directing agent and stirred at the room temperature till being completely dissolved; the solution is transferred to a reaction still of 100mL, and is subjected to reaction for 16-24h at 160-180DEG C; the solution is cooled to the room temperature after reaction, products obtained by centrifugation are washed by ultrapure water for three times and then by waterless ethanol for three times, placed in a vacuum drying box and dried for 12h at 60 DEG C; and the dried products are placed in a vacuum inflated tubular furnace, and calcined for 2h at 400 DEG C with protection of N2 to obtain the NiMoO4 / MoS2 / NiS nanocomposite. The predation method is scientific, reasonable and easy, low in cost and suitable for industrial large-scale production, and the morphology, size and structure of products are controllable.

Description

technical field [0001] The invention belongs to the field of supercapacitor electrode materials, in particular to a NiMoO 4 / MoS 2 / NiS nanocomposite preparation method. Background technique [0002] Energy is the cornerstone of social development. With economic growth, human beings demand more and more energy. According to reports, our global energy demand will double by the middle of this century and triple by 2100. Therefore, the energy problem is one of the urgent problems to be solved in today's society, and the development of new and environmentally friendly new energy sources will be an inevitable trend of future development. As a new type of energy storage device, supercapacitors have attracted much attention. Supercapacitor is a new type of energy storage device between traditional capacitors and batteries. It has the characteristics of high charge storage capacity, fast charge and discharge speed, high efficiency, long cycle life, and no pollution to the environ...

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
IPC IPC(8): H01G11/86H01G11/30
Inventor 关晓辉吕璇鲁敏徐小惠
Owner NORTHEAST DIANLI UNIVERSITY
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