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Phosphomolybdic acid supramolecular polymer with water-assisted hydrogen bond conductive network structure

A technology of supramolecular polymer and network structure is applied in the field of preparation of phosphomolybdic acid supramolecular polymer, which can solve the problems of low electrical conductivity and poor stability.

Active Publication Date: 2022-07-29
HARBIN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problem that multi-acid polymers have poor stability in solution and low conductivity as supercapacitor electrode materials

Method used

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  • Phosphomolybdic acid supramolecular polymer with water-assisted hydrogen bond conductive network structure
  • Phosphomolybdic acid supramolecular polymer with water-assisted hydrogen bond conductive network structure
  • Phosphomolybdic acid supramolecular polymer with water-assisted hydrogen bond conductive network structure

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specific Embodiment approach 1

[0026] Embodiment 1: This embodiment describes a phosphomolybdic acid supramolecular polymer with a water-assisted hydrogen bond conductive network structure, and the molecular formula of the polymer is C 40 H 58 N 20 Cu 2 P 2 Mo 24 O 90 , its basic structural unit contains two metal copper ions, four 1-imidazole-1-methylene-1H-benzotriazole organic ligands, two PMo 12 O 40 3- Polyacid anion and ten water molecules; in which the copper ion has only one coordination environment, on the one hand, the copper ion is combined with two of the organic ligands Nitrogen atoms N4, N6, another nitrogen atom N3 of the same ligand, and the oxygen atoms O1W and O2W of four coordinated water molecules are coordinated to form a double-nuclear copper macrocyclic metal-organic complex structural unit Cu 2 (H 2 O) 4 (imbta) 4 . On the other hand, it interacts with four coordinated water molecules and six free water molecules through hydrogen bonding to form water-copper ring clusters...

specific Embodiment approach 2

[0029] Specific embodiment 2: a preparation method of a phosphomolybdic acid supramolecular polymer supercapacitor electrode material with a water-assisted hydrogen bond conductive network structure of the present embodiment is completed according to the following steps:

[0030] 1. Prepare a reaction solution with a pH value of 2.0-2.3: add 0.32g phosphomolybdic acid, 0.22g copper acetate and 0.031g 1-imidazole-1-methylene-1H-benzotriazole into distilled water and stir well , and then the pH value of the suspension is adjusted to 2.0-2.3 to obtain a reaction solution with a pH value of 2.0-2.3;

[0031] The molar ratio of phosphomolybdic acid and copper acetate described in step 1 is: 1.1:(7.0~7.3);

[0032] The molar ratio of the phosphomolybdic acid described in the step 1 and 1-imidazole-1-methylene-1H-benzotriazole is: 1.1:1.0;

[0033] The amount of phosphomolybdic acid described in the step 1 and the volume ratio of distilled water are: 0.16mmol:15mL;

[0034] 2. Prep...

specific Embodiment approach 3

[0037] Embodiment 3: The method for preparing a phosphomolybdic acid supramolecular polymer with a water-assisted hydrogen bond conductive network structure described in step 1 of Embodiment 2, the 1-imidazole-1-methylene-1H- The molar ratio of benzotriazole, copper acetate and phosphomolybdic acid is 1.0:(7.0-7.3):1.1.

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Abstract

The invention relates to preparation and application of a phosphomolybdic acid supramolecular polymer with a water-assisted hydrogen bond conductive network structure. The invention aims to solve the problems of poor stability and low conductivity of some polyacid polymers serving as supercapacitor electrode materials in a solution, and provides a preparation method of a supercapacitor electrode material capable of improving the capacitive performance of the polyacid polymers. The invention relates to a phosphomolybdic acid supramolecular polymer with a water-assisted hydrogen bond conductive network structure. The chemical formula of the phosphomolybdic acid supramolecular polymer with the water-assisted hydrogen bond conductive network structure is [Cu2 (H2O) 4H2 (imbta) 4] (PMo12O40) 2.6 H2O, wherein imbta is 1-imidazole-1-methylene-1H-benzotriazole. The synthesis method comprises the following steps: adding phosphomolybdic acid, copper acetate and imbta into distilled water, uniformly stirring, adjusting the pH value, and reacting for 4 days at the temperature of 140 DEG C to obtain an electrode material prepared from the polymer with the specific capacitance value of 710F. G <-1 > under the current density of 1A. G <-1 >. And a technical route is provided for constructing a hydrogen bond conductive network structure to improve the super-electrical property of the polyacid polymer.

Description

technical field [0001] The invention relates to a preparation method and application of a phosphomolybdic acid supramolecular polymer with a water-assisted hydrogen bond conductive network structure. Background technique [0002] Supercapacitors are a new generation of energy storage devices between rechargeable batteries and traditional electrostatic capacitors, whether it is small-capacity precision energy storage or large-scale power energy storage, from individual energy storage to hybrid storage with batteries or fuel cells. Yes, it exhibits excellent properties. [0003] Polyoxometalates (POMs) (also known as polyacids) are nanomolecular clusters with multiple metals and oxygen richness. The structure can be modified and the physical and chemical properties can be adjusted. Phosphomolybdic acid is a classic Keggin-type polyacid that exhibits strong reducing ability during discharge, with a theoretical capacitance of 270mAh / g, which is higher than that of commercial c...

Claims

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Application Information

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IPC IPC(8): H01G11/26H01G11/24H01G11/48H01G11/86H01G11/36H01G11/42
CPCH01G11/26H01G11/24H01G11/48H01G11/86H01G11/36H01G11/42Y02E60/13
Inventor 于晓晶马慧媛王新铭谭立超杨桂欣
Owner HARBIN UNIV OF SCI & TECH
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