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Ruthenium coordinated polypyrrole nanosphere cluster material and preparation method and application thereof

A pyrrole nano-coordination technology, applied in the direction of hybrid capacitor electrodes, etc., can solve the problems of poor long-term cycle stability, poor high-power discharge performance, and limited application of polypyrrole, so as to improve cycle stability, improve conductivity, improve The effect of agglomeration

Active Publication Date: 2017-05-31
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, as a capacitor electrode material, conductive polypyrrole has large internal resistance, poor high-power discharge performance, and poor long-term cycle stability. These problems greatly limit the application of polypyrrole in the field of supercapacitor energy storage.

Method used

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  • Ruthenium coordinated polypyrrole nanosphere cluster material and preparation method and application thereof
  • Ruthenium coordinated polypyrrole nanosphere cluster material and preparation method and application thereof
  • Ruthenium coordinated polypyrrole nanosphere cluster material and preparation method and application thereof

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Embodiment 1

[0039] For the molecular formula and structural schematic diagram of the ruthenium-coordinated polypyrrole material described in the present invention, please refer to the attached description for details. figure 1 . Utilize the interaction between the vacant orbit of the ruthenium ion and the unpaired electrons of the nitrogen atom on the pyrrole chain to coordinate to obtain the monomer complex pyrrole ruthenium; and then electrochemically polymerize to obtain the coordination polymer. The molecular structure of ruthenium-coordinated polypyrrole is tetrahedral. The schematic diagram of the spatial structure of the ruthenium-coordinated polypyrrole nanosphere cluster material of the present invention, see the attached Figure 16 , it can be seen that it is mainly composed of ruthenium-coordinated polypyrrole nanospheres 1 , the nanospheres are closely packed to form nanosphere clusters 2 , and the nanosphere clusters are aggregated to form micropores 3 between nanosphere clu...

Embodiment 2

[0041] The preparation process flow chart of the ruthenium-coordinated polypyrrole nanosphere cluster material described in the present invention is detailed in the appendix of the description figure 2 . The specific preparation steps of the ruthenium-coordinated polypyrrole material are as follows:

[0042] (1) Using the acetonitrile / water solution of pyrrole monomer and ruthenium trichloride as the reaction solution, using the empty orbital of the ruthenium ion and the unpaired electron interaction of the nitrogen atom on the pyrrole chain, direct coordination reaction at room temperature to obtain the pyrrole monomer The complex with ruthenium ions coordinates the pyrrole monomer with ruthenium.

[0043] (2) In the electrochemical three-electrode system, activated carbon paper is used as the electrode base material and as the working electrode, the platinum sheet is used as the auxiliary electrode, and the saturated calomel electrode is used as the reference electrode, an...

Embodiment 3

[0046] The specific preparation method of the ruthenium-coordinated polypyrrole nanosphere cluster electrode material of the present invention is as follows:

[0047] (1) The static coordination method: using the acetonitrile / water solution of pyrrole monomer and ruthenium trichloride as the reaction solution, the volume ratio of acetonitrile / water is 1:3, and the molar concentration of pyrrole monomer is 0.1mol / L , the molar concentration of ruthenium trichloride is 0.0003mol / L, the coordination reaction time is 12h, and the reaction temperature is 25°C.

[0048] (2) The described cyclic voltammetry electropolymerization method is: take the acetonitrile / water solution of ruthenium-coordinated pyrrole monomer and lithium perchlorate as the electrolyte solution, the volume ratio of acetonitrile / water is 1:3, and the ruthenium-coordinated pyrrole monomer The molar concentration of lithium perchlorate is 0.1mol / L, and the molar concentration of lithium perchlorate is 0.1mol / L. A ...

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Abstract

The invention discloses a ruthenium coordinated polypyrrole nanosphere cluster material and a preparation method and application thereof. The ruthenium coordinated polypyrrole nanosphere cluster material is formed by ruthenium coordinated polypyrrole nanospheres, and the nanospheres are closely accumulated to form nanosphere clusters which are gathered to form nanosphere inter-cluster micropores. The ruthenium coordinated polypyrrole nanosphere cluster material is prepared according to a monomer coordination-electropolymerization method. Firstly, according to a direct coordination reaction method, ruthenium coordinated polypyrrole monomers are prepared under interaction of unpaired electrons of nitrogen atoms on pyrrole monomer molecule chains and unoccupied molecular orbitals of ruthenium ions by means of direct coordination reaction; secondly, according to a cyclic voltammetry electropolymerization reaction systhesis method, the ruthenium coordinated polypyrrole monomers are subjected to electropolymerization reaction to obtain ruthenium coordinated polypyrrole under the pi-pi stacking force action. Compared with the prior art, the material has advantages of large specific surface area, high conductivity and high structural stability and shows excellent capacitive performances and electrochemical stability in electrochemical application.

Description

technical field [0001] The invention relates to a ruthenium-coordinated polypyrrole nanosphere cluster material, a preparation method thereof and an application of supercapacitor electrochemical energy storage, belonging to the field of new polymer energy materials. Background technique [0002] Among conductive polymers, polypyrrole is a classic conductive polymer. Because of its good air stability, high conductivity, environmental non-toxicity and reversible redox, it is widely used in microelectronics, electrochemistry, biotechnology, etc. It has attractive application prospects, so it has been paid special attention. [0003] Conductive polypyrrole is used as an electrode material for supercapacitors, and its energy storage is also realized by the Faraday pseudocapacitance principle. Its electrochemical reaction occurs not only on the surface of the electrode material, but also in the two-dimensional or quasi-two-dimensional space of the bulk phase of the electrode mater...

Claims

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Application Information

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IPC IPC(8): H01G11/48H01G11/34H01G11/32C08G73/06
CPCY02E60/13H01G11/48C08G73/0611H01G11/32H01G11/34
Inventor 谢一兵周英智
Owner SOUTHEAST UNIV
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