Preparation method and application of NiCo2S4/graphite felt composition electrode material

A composite electrode and graphite felt technology, applied in the field of nanomaterials and electrochemistry, can solve the problems of rare metal sulfide research
CN106206059AActive Publication Date: 2016-12-07FUZHOU UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
FUZHOU UNIV
Publication Date
2016-12-07

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Abstract

The invention discloses a preparation method and application of a NiCo2S4 / graphite felt composition electrode material. Water and ethyl alcohol serve as solvents, baking soda serves as an alkali source, ammonium fluoride serves as surfactant, cobalt chloride and nickel chloride serve as a cobalt source and a nickel source respectively, and a nickel-cobalt precursor is constructed on pre-oxidized graphite felt through hydrothermal reaction; then thioacetamide serves as a sulfur source, and the needle-shaped NiCo2S4 / graphite felt composition electrode material is prepared through the secondary hydrothermal method. The nickel-cobalt precursor can increase the sulfur loading amount and stabilize appearance of NiCo2S4, ammonium fluoride greatly increases the nucleation rate of NiCo2S4, and accordingly the specific capacitance of the composite material is increased and is as high as 1260-1265 F / g. The prepared NiCo2S4 / graphite felt composition electrode material is good in conductivity and high in specific capacitance, has the mechanical property of softness, and can be used as a supercapacitor electrode material.
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Description

technical field

[0001] The invention belongs to the field of nanomaterials and electrochemistry, in particular to a NiCo 2 S 4 Preparation method and application of graphite felt composite electrode material. Background technique

[0002] Compared with batteries and electric double-layer capacitors, supercapacitors have the advantages of high power density, fast charge and discharge speed, and long cycle life, so they are irreplaceable and efficient energy storage devices. Supercapacitors are mainly composed of four parts: current collectors, electrodes, electrolytes, and separators. Among them, the structure and characteristics of electrode materials are the key factors that determine the performance of supercapacitors. So far, there have been many reports on metal oxides and metal hydroxides as electrode materials, such as Co 2 o 3 、NiCo 2 o 4 , Ni(OH) 2 、Co(OH) 2 However, the research on metal sulfides as electrode materials is still relatively rare. Metal sulfid...

Claims

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