Hourglass type polyoxometallate material as well as preparation method and application thereof

The hourglass-shaped polyoxometalate material was prepared by solvothermal synthesis, which solved the problems of easy solubility and low conductivity of polyoxometalate materials in polar electrolyte systems, and achieved high conductivity and electrochemical stability, thus improving the performance of supercapacitors.

CN122234087AActive Publication Date: 2026-06-19HUANGSHAN UNIV
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Patent Information

Application Number
CN202610358244.X
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-03-23
Publication Date
2026-06-19
Estimated Expiration
2046-03-23

AI Technical Summary

Technical Problem

Existing polyoxometalate materials are easily dissolved and lost in polar electrolyte systems, resulting in severe loss of active materials, low conductivity, poor rate performance, complicated and costly preparation processes, and difficulty in achieving precise control and stable mass production.

Method used

Hourglass-shaped polyoxometalate materials were prepared by solvothermal synthesis. By controlling the ratio of cadmium salt, molybdate, and pyridine and reacting at a specific temperature, a triclinic crystal structure with a continuous hydrogen bond network was formed, which enhanced the conductivity and structural stability of the material.

Benefits of technology

It significantly improves the proton and electron transport rates of the material, enhances electrochemical stability and rate performance, and the material exhibits high specific capacitance and excellent cycle stability at high current densities, while reducing production costs.

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Abstract

The invention discloses an hourglass type polyoxometallate material as well as a preparation method and application thereof. The hourglass type polyoxometallate material with a novel structure is prepared by adopting a solvothermal synthesis method, and the structure of the hourglass type polyoxometallate material is systematically characterized by means of single crystal X-ray diffraction, infrared spectroscopy and the like. Results show that abundant and continuous hydrogen bond networks exist in the crystal structure of the material, an efficient transmission channel is provided for directional migration of protons and electrons, and the transfer rate of the protons / electrons in a crystal framework can be remarkably increased. Meanwhile, a strong coordination effect and a synergistic effect are formed among a metal center, an organic ligand and polyacid anions in the material, so that ordered assembly of structural elements is realized, the structural stability of a crystal framework is more effectively enhanced, and the electrochemical stability of the material is greatly improved.
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