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High-specific-capacity MoS2/Mn2O3-nanometer-hollow-ball composite electrode material and preparing method and application thereof

A high specific capacity, composite electrode technology, applied in the direction of hybrid capacitor electrodes, hybrid/electric double layer capacitor manufacturing, etc., can solve the problems of easy agglomeration, short power time and difficult to achieve peeling effect, etc., to achieve strong capacitance performance, enhanced performance, The effect of simple preparation process

Active Publication Date: 2018-02-27
JIANGSU UNIV OF SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A suitable solvent is beneficial to the prepared monolayer MoS 2 The nanosheets are dispersed and not easy to agglomerate; the choice of exfoliation temperature, cell pulverization power and time is the key to the preparation of monolayer MoS 2 The key to nanosheets is that the temperature is too high and it is easy to agglomerate, and the power time is too short to achieve the peeling effect

Method used

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  • High-specific-capacity MoS2/Mn2O3-nanometer-hollow-ball composite electrode material and preparing method and application thereof
  • High-specific-capacity MoS2/Mn2O3-nanometer-hollow-ball composite electrode material and preparing method and application thereof
  • High-specific-capacity MoS2/Mn2O3-nanometer-hollow-ball composite electrode material and preparing method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] First, ensure that the production area and equipment are clean and dry, and the utensils used are cleaned and disinfected.

[0034] Monolayer MoS with high specific capacity prepared in this example 2 / Mn 2 O 3 The method of nano hollow sphere composite electrode comprises the following steps:

[0035] (1) Three layers of Mn 2 O 3 Preparation of hollow spheres: the configuration density is 0.1155 g.ml -3 The sucrose aqueous solution was poured into a 150 mL polytetrafluoroethylene / stainless steel hydrothermal reactor according to the filling of 0.6, the reaction temperature was 190 °C, and the reaction time was 120 min. After the reaction kettle was cooled to room temperature, centrifugally washed with ethanol and water until the solution became transparent, and the precipitate was placed in a blast drying oven at 80 °C for drying for 12 h. (AC) 2 .4H 2 O aqueous solution, then add 0.6 g of carbon spheres to it, first ultrasonically and then stir until the solut...

Embodiment 2

[0039] The basic steps are the same as in Example 1, the difference is: the preparation of monolayer MoS 2 During the nanosheet process, MoS 2 The mass density of the NMP (nitrogen-methylpyrrolidone) dispersion was 2.5 mg / mL.

Embodiment 3

[0041] The basic steps are the same as in Example 1, the difference is: the preparation of monolayer MoS 2 During the nanosheet process, MoS 2 The mass density of the NMP (nitrogen-methylpyrrolidone) dispersion was 12.5 mg / mL.

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Abstract

The invention relates to a high-specific-capacity MoS2 / Mn2O3-nanometer-hollow-ball composite electrode material and a preparing method and application thereof. The preparing method includes the stepsthat a three-layer Mn2O3 hollow ball with the maximal specific capacity serves as a reactant; dispersion and exfoliation are carried out in an organic solvent with the mechanical exfoliation method toobtain single-layer MoS2; a strongly-basic solution is added into a mixed NMP solution of the single-layer MoS2 nanometer sheet and the three-layer Mn2O3 hollow ball to contend surface protons of thesingle-layer MoS2 nanometer sheet, and a single-layer MoS2 / Mn2O3-nanometer-hollow-ball electrode is prepared. The high-specific-capacity MoS2 / Mn2O3-nanometer-hollow-ball composite electrode materialand the preparing method and application thereof have the advantages that the single-layer MoS2 nanometer sheet is used in the composite electrode, and the composite electrode has the large specific area, and provides more active sites for a psedocapacitance reaction; through the advantages of the hollow structure of the three-layer Mn2O3 hollow ball, compared with a traditional electrode material, the composite electrode material has the super-high capacitive performance, and meanwhile the high-specific-capacity MoS2 / Mn2O3-nanometer-hollow-ball composite electrode material is easy to prepare,convenient to store, long in cycle life and high in operability.

Description

technical field [0001] The invention belongs to the field of electrode materials, in particular to a high specific capacity MoS 2 / Mn 2 O 3 Nano hollow sphere composite electrode material, preparation method and application thereof. Background technique [0002] Supercapacitors are the focus of new energy development due to their high energy and power density. Electrode material is one of the key factors affecting the capacitive performance of supercapacitors. At present, most of the electrode materials of pseudocapacitive supercapacitors are RuO 2 , RhO x Such precious metal oxides have high specific capacitance performance, but due to limited precious metal mineral resources and small application range, they are not suitable for large-scale production. MoS, the representative of transition metal dichalcogenides (TMDs) 2 Due to the advantages of two-dimensional morphology, it has a larger specific surface area and provides more active sites for Faraday pseudocapaciti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/26H01G11/30H01G11/46H01G11/86
CPCY02E60/13H01G11/26H01G11/30H01G11/46H01G11/86
Inventor 丹媛媛孙园园卢晨陈泽安陈广亮雷磊
Owner JIANGSU UNIV OF SCI & TECH
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