Application of high-performance supercapacitor electrode material Co-Fe-type Prussian blue nanocube

A supercapacitor electrode, Prussian blue-like technology, applied in hybrid capacitor electrodes, nanotechnology for materials and surface science, nanotechnology, etc., can solve the problem of less research, unsatisfactory rate performance, low specific capacity and rate performance and other problems, to achieve the effect of simple process, improved fast charge and discharge and service life, and increased capacity
CN108083293AInactive Publication Date: 2018-05-29DALIAN NATIONALITIES UNIVERSITY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
DALIAN NATIONALITIES UNIVERSITY
Publication Date
2018-05-29
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to application of a high-performance supercapacitor electrode material Co-Fe-type Prussian blue nanocube, and belongs to the technical field of electrode material preparation. With inorganic cobalt salt and potassium ferricyanide as reaction raw materials and trisodium citrate as a complex stabilizer, by adopting a liquid-phase co-precipitation reaction method and controllingreaction conditions such as the dosage of potassium ferricyanide and the standing and aging time, the Co-Fe-type Prussian blue nanocube material with high dispersibility and a large specific surfacearea is prepared, and the size of the material is about 300 nm. By means of the prepared Co-Fe-type Prussian blue nanocube material, the capacity of electrochemical capacitors is increased, the rapidcharge and discharge performance and other performance of the capacitors are improved, the service life of the capacitors is prolonged, the capacitance value is up to 447 F / g when constant-current charge and discharge with the current of 5 A / g are achieved in a 1 mol / L sodium sulfate solution, and the material has good rate performance.
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Description

[0001] This application is a divisional application with the application number 2017105689300, the application date is July 13, 2017, and the invention title is "a high-performance supercapacitor electrode material Co-Fe-like Prussian blue nanocube and its preparation method and application". technical field

[0002] The invention relates to a high-performance supercapacitor electrode material Co-Fe-like Prussian blue nano-cube and a preparation method and application thereof, belonging to the technical field of electrode material preparation. Background technique

[0003] Prussian blue is a dark blue pigment, mainly used in paint, ink, plastics and other industries as well as the coloring of cultural and educational supplies. Since in the Prussian blue unit cell, ferrous ions and ferric ions occupy two different positions, and these two positions can be replaced by different other transition metals, so the types of Prussian blue-like compounds formed are diverse. sex. Prus...

Claims

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