A mxene / iron oxalate composite material and a preparation method thereof

MXene and iron oxalate were compounded by a hydrothermal method to form a three-dimensional conductive network, which solved the problems of MXene sheet stacking and poor conductivity of iron oxalate and achieved improved material performance.

CN119742184BActive Publication Date: 2025-10-14CHANGZHOU UNIV
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Patent Information

Application Number
CN202411938955.1
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2024-12-26
Publication Date
2025-10-14
Estimated Expiration
2044-12-26

AI Technical Summary

Technical Problem

In practical applications, MXene materials are prone to inter-layer stacking, which leads to a reduction in active surface area and obstructed ion transport, affecting the electrochemical performance and cycle life of supercapacitors. Iron oxalate has poor conductivity when used as an electrode material, limiting its rate performance and charge and discharge speed.

Method used

MXene and ferric oxalate are compounded by a hydrothermal method to form an interwoven three-dimensional conductive network, which improves the conductivity and ion transport rate of the material and enhances the electrochemical properties of the material.

Benefits of technology

It improves the conductivity of MXene, reduces the interlayer stacking effect, enhances the structural stability and ion transfer rate of the composite material, and improves the electrochemical performance of the supercapacitor.

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Abstract

The application relates to the technical field of supercapacitor electrode materials, in particular to a MXene / iron oxalate composite material and a preparation method thereof. The preparation method comprises the following steps: preparing MXene nanosheets; mixing, stirring and then placing MXene suspension, FeSO4.7H2O, ascorbic acid and H2C2O4.2H2O into a muffle furnace to perform a hydrothermal reaction to obtain the MXene / iron oxalate composite material. The MXene and the iron oxalate are compounded by the hydrothermal method, the conductivity of the MXene is improved, a three-dimensional conductive network is generated after the in-situ compounding of the MXene and the iron oxalate, the conductivity of the composite material is further improved, the crystallinity of the iron oxalate is increased with the increase of the temperature under the hydrothermal condition, the ion transmission rate is improved after the cross-compounding of the MXene and the iron oxalate, and the performance of the composite material is improved.
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