Method for regulating and controlling pore structure of cement-based supercapacitor

By controlling the pore structure of cement-based supercapacitors, using sodium dodecyl sulfate and sodium carboxymethyl cellulose to form foam, and then heating and soaking in potassium hydroxide solution, combined with graphite conductive adhesive and copper wires to construct electrodes, the problem of insufficient energy storage performance of cement-based supercapacitors was solved, achieving high-efficiency energy storage performance and stability.

CN120933081APending Publication Date: 2025-11-11KUNMING UNIV OF SCI & TECH
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Patent Information

Application Number
CN202511248151.3
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-09-03
Publication Date
2025-11-11

AI Technical Summary

Technical Problem

In the existing technology, there is insufficient research on the pore structure control method of cement-based supercapacitors, which leads to their energy storage performance not being fully utilized, resulting in problems such as poor conductivity and limited energy storage capacity.

Method used

Sodium dodecyl sulfate and sodium carboxymethyl cellulose are used in combination to form foam. The pore structure of the cement matrix is ​​regulated by heating to induce directional pores and soaking in potassium hydroxide solution. Electrodes are constructed by combining graphite conductive adhesive and copper wires to form a cement-based supercapacitor with directional pores.

Benefits of technology

It significantly improves the pore connectivity and energy storage capacity of cement-based supercapacitors, reduces costs, and enhances structural stability and safety.

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Abstract

The invention discloses a method for regulating and controlling a pore structure of a cement-based supercapacitor, and belongs to the technical field of energy storage. The method for regulating and controlling the pore structure of the cement-based supercapacitor comprises the following steps: firstly, preparing foam, then uniformly stirring cement and sand, adding water and a water reducing agent, fully stirring, and finally, doping the foam into slurry, and fully stirring to obtain the slurry. And pouring the stirred slurry into a mold, standing for 24 hours, and demolding to obtain the cement matrix. And packaging the front, back, left and right surfaces of the cement matrix by using epoxy resin, and drying at 60 DEG C for 3 days. And soaking the treated test piece in a 2mol / L KOH solution for 5 days, and then manufacturing the test piece into the cement-based supercapacitor. According to the invention, the regulation and control of the pore structure of the cement-based supercapacitor are realized, the treated cement-based supercapacitor has better pore connectivity, the pores show tropism, the conductivity and the capacitance are better, the specific capacitance can reach 63.3 F / m < 2 > to the maximum, and the compressive strength and the breaking strength are reduced.
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