Microbial electrosynthesis carbon sequestration device and method adopting conductive breathable film composite cathode

By using a stacked reactor design with conductive and breathable membrane composite cathodes, the problems of mass transfer bottleneck and low space utilization in microbial electrosynthesis are solved, and carbon dioxide is efficiently converted into high-value chemicals at room temperature and pressure, which has the benefits of emission reduction and resource utilization.

CN122235744APending Publication Date: 2026-06-19SHANGHAI LINGANG TONGJI UNIVERSITY SMART TECHNOLOGY RESEARCH INSTITUTE +1
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Patent Information

Application Number
CN202610370079.X
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-03-25
Publication Date
2026-06-19

AI Technical Summary

Technical Problem

In existing microbial electrosynthesis technologies, the mass transfer path is long, the gas-liquid-solid interface separation efficiency is low, the space utilization rate is limited, and the mass transfer process depends on the dissolution of carbon dioxide in the liquid phase, resulting in problems such as mass transfer bottlenecks and insufficient space utilization efficiency in reactor configuration.

Method used

A conductive and breathable membrane composite cathode is adopted, and the stacked reactor design integrates gas phase carbon dioxide supply, electron transfer and microbial attachment functions. The conductive and breathable hollow fiber membrane realizes direct gas phase mass transfer of carbon dioxide. Combined with diffusion-enhancing materials and micro/nanofiber layers, a highly efficient coupled reaction interface is formed to achieve a stable integrated system.

Benefits of technology

It improves mass transfer efficiency, shortens the distance of mass transfer and electron transfer, enhances space utilization, and the device is easy to modularly expand. It realizes the efficient conversion of carbon dioxide into high-value chemicals at room temperature and pressure, and has emission reduction and resource utilization benefits.

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Abstract

The invention discloses a microbial electrosynthesis carbon sequestration device and method adopting a conductive breathable film composite cathode, and belongs to the field of carbon dioxide resource utilization. The device adopts a stacked reactor, a cathode chamber is provided with an integrated functional composite cathode, and the integrated functional composite cathode is composed of three layers of structures: a conductive breathable layer adopts a conductive breathable hollow fiber membrane to realize gas-phase carbon dioxide supply and electron transfer; the diffusion strengthening layer is a three-dimensional porous carbon-based material coating the outer side, and mass transfer and current distribution are optimized; the biological adhesion layer is a micro-nano fiber network growing on the surface of the conductive breathable film and extends into pores of the diffusion strengthening layer. Carbon dioxide is subjected to gas phase diffusion through a hollow fiber membrane, electrons are transmitted through a membrane body-carbon base-fiber network, and microorganisms are synergistically driven to be reduced into high-value chemicals. The bottleneck of gas-phase mass transfer and biological-electronic interface transfer is broken through, the structure is compact, the modularization degree is high, scale amplification is easy, and an innovative scheme is provided for efficient microbial electrosynthesis carbon sequestration.
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