Method for synthesizing hydrogen peroxide through electrofiltration of carbon nanotube woven membrane

By utilizing the nanoscale pore structure of carbon nanotube woven membranes and simplifying the preparation process, the mass transfer bottleneck in hydrogen peroxide synthesis under low oxygen conditions is solved, enabling efficient, stable, and continuous electrochemical synthesis, which is suitable for distributed hydrogen peroxide production.

CN122344737APending Publication Date: 2026-07-07TSINGHUA SHENZHEN INTERNATIONAL GRADUATE SCHOOL
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Patent Information

Application Number
CN202610476185.6
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-04-13
Publication Date
2026-07-07

AI Technical Summary

Technical Problem

Existing electrochemical hydrogen peroxide synthesis systems suffer from limited mass transfer under low dissolved oxygen conditions, resulting in low synthesis efficiency. Traditional electrode substrates have thick diffusion boundary layers, uneven fluid distribution, and complex preparation processes that are difficult to scale up.

Method used

Using carbon nanotube woven membranes as electrodes, a three-dimensional network structure with nanoscale pores is formed through pressure-driven self-assembly, which forces the electrolyte to penetrate the nanopores and realizes the two-electron oxygen reduction reaction to generate hydrogen peroxide, avoiding the use of binders and simplifying the preparation process.

Benefits of technology

It significantly improves mass transfer efficiency under low-oxygen conditions, eliminates channeling effects, increases the utilization rate of catalytic active sites, ensures electrode structure stability and scalable production, and achieves efficient, stable and continuous hydrogen peroxide synthesis.

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Abstract

The invention discloses a method for synthesizing hydrogen peroxide through electrofiltration of a carbon nanotube woven membrane. The method comprises the following steps: S1, dispersing a carbon nanotube which is not subjected to chemical catalytic modification in a solvent, and carrying out ultrasonic treatment to obtain a dispersion liquid; s2, placing the dispersion liquid on a microfiltration membrane, under pressure driving, enabling carbon nanotubes to spontaneously interweave, physically overlap and layer-by-layer interlocking on the surface of the microfiltration membrane under the directional guidance of hydrodynamics, and performing in-situ assembly to form a carbon nanotube three-dimensional network structure, so as to obtain a carbon nanotube woven membrane; s3, cleaning and drying the carbon nanotube woven membrane, assembling the carbon nanotube woven membrane as a cathode in a cathode chamber of the electrolytic tank, and sealing the edge of the carbon nanotube woven membrane; and S4, connecting a circuit between the cathode and the anode which are arranged in parallel, pumping the electrolyte containing dissolved oxygen into the electrolytic tank, enabling the electrolyte to flow through the anode and then vertically penetrate through a nanoscale interlaced pore channel in the cathode, and carrying out two-electron oxygen reduction reaction to generate hydrogen peroxide.
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