Preparation method of Co3S4 nanosheet array modified by CeO2 nanoparticles

A nanosheet array and nanoparticle technology, applied in the manufacture of hybrid/electric double layer capacitors, hybrid capacitor electrodes, etc., can solve the problems of easy agglomeration, lower utilization rate of active materials and cycle stability, and achieve simple and effective preparation methods Effect
CN112164592AActive Publication Date: 2021-01-01宁波市大学科技园发展有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
宁波市大学科技园发展有限公司
Publication Date
2021-01-01

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Abstract

The invention provides a preparation method of a Co3S4 nanosheet array modified by CeO2 nanoparticles. The method comprises the following steps: mixing a cobalt salt, an imidazole ligand and a solvent, adding foamed nickel, and growing a zeolite imidazolate framework CoZIFL nanosheet array on a foamed nickel substrate through a reaction; then, adding the CoZIFL nanosheet array into a sulfur sourcesolution, and generating a Co3S4 nanosheet array through hydrothermal vulcanization; and adding cerium salt, a precipitator and a solvent into the precursor, and obtaining a CeO2 nanoparticle modified Co3S4 nanosheet array through solvothermal reaction. The CeO2 nanoparticle modified Co3S4 nanosheet array prepared by adopting the method can be directly used as an electrode of a supercapacitor, and compared with a Co3S4 nanosheet array precursor, the specific capacitance of the CeO2 nanoparticle modified Co3S4 nanosheet array prepared by adopting the method is improved by 114.8% (under the condition of 0.5 A / g).
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Description

technical field

[0001] The invention belongs to the technical field of electrode materials, in particular to a CeO 2 Nanoparticle-modified Co 3 S 4 Preparation methods of nanosheet arrays. Background technique

[0002] As a new type of green energy storage device, supercapacitor has attracted extensive attention in its technical research. Electrode materials are the core components of supercapacitors. Therefore, electrode materials for supercapacitors are the focus of current research. co 3 S 4 Due to their excellent electrochemical properties, various Co 3 S 4 Nanostructures are widely used in supercapacitors. Then Co 3 S 4 Nanopowders are prone to agglomeration during practical application, which reduces the utilization rate and cycle stability of active materials. Constructing Co directly on conductive substrates 3 S 4 Nanosheet arrays can fully expose active stable points, reduce agglomeration, and enhance conductivity.

[0003] In recent years, nano-CeO ...

Claims

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