Electrolytic tank structure for carbon dioxide electrolysis
A carbon dioxide and electrolytic cell technology, applied in the electrolysis process, electrolysis components, electrolytic organic production and other directions, can solve the problems of carbon dioxide electrolysis performance decline, unable to meet practical application requirements, difficult to maintain hydrophobicity, etc., achieving simple structure and controllable cost. , the effect of simple pressure and temperature regulation
Pending Publication Date: 2021-12-03
INST OF URBAN ENVIRONMENT CHINESE ACAD OF SCI
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Problems solved by technology
Although the plate-type fluid electrolysis cell can realize high-current carbon dioxide electrolysis, it relies heavily on the gas diffusion layer
However, the existing commercial gas diffusion layer is expensive, and it is difficult to maintain its hydrophobicity under high-current electrolysis conditions, resulting in the plane where the catalyst is completely submerged by the catholyte, the performance of carbon dioxide electrolysis decreases, and the competition for hydrogen evolution increases, which cannot meet the needs of practical applications.
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[0022] The technical solutions in the embodiments of the invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the invention. Obviously, the described embodiments are only some, not all, embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts fall within the protection scope of the present invention.
[0023] Reference manual attached figure 1 And attached figure 2 , an electrolytic cell structure for carbon dioxide electrolysis, comprising an electrolytic cell for carbon dioxide electrolysis, comprising a hollow cylindrical porous catalytic cathode 1, a water retention layer 2, a separation membrane 3 and a columnar porous anode 4, the hollow cylindrical The porous catalytic cathode 1 has a large number of longitudinal pores and transverse pores, and the pores are loaded with me...
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The invention discloses an electrolytic tank structure for carbon dioxide electrolysis, which comprises a hollow cylindrical porous catalytic cathode, a water retention layer, a separation membrane and a columnar porous anode, the above hollow cylindrical porous catalytic cathode is provided with longitudinal pores and transverse pores, the columnar porous anode is arranged in the hollow structure of the hollow cylindrical porous catalytic cathode, the separation membrane is distributed between the hollow cylindrical porous catalytic cathode and the columnar porous anode, and the water retention layer is arranged between the hollow cylindrical porous catalytic cathode and the separation membrane. The electrolytic tank is simple in structure, high in carbon dioxide supply speed, large in carbon dioxide supply amount, controllable in cost, good in electrolytic performance stability and easy and convenient to operate.
Description
technical field [0001] The invention belongs to the technical field of carbon dioxide electrochemistry, and in particular relates to an electrolytic cell structure for electrolysis of carbon dioxide. Background technique [0002] Using valley electricity or waste electricity to drive electrochemical carbon dioxide reduction to produce carbon-based chemicals and fuels can improve energy efficiency, reduce carbon dioxide, replace traditional petrochemical production, decouple economic development from fossil resources, and achieve sustainable human development. available policy. [0003] The traditional electrochemical carbon dioxide reduction reaction occurs on the surface of the cathode in the H-type electrolytic cell, and the cathode utilizes dissolved carbon dioxide molecules in water for the reaction. The reaction current is therefore limited by the solubility of carbon dioxide gas in water. At present, the improvement of the H-type electrolytic cell is mainly based on ...
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Login to View More IPC IPC(8): C25B9/21C25B11/032C25B11/054C25B3/26C25B1/23
CPCC25B9/21C25B11/032C25B11/054C25B3/26C25B1/23
Inventor 谢佳芳赵全保郑煜铭俞汉青
Owner INST OF URBAN ENVIRONMENT CHINESE ACAD OF SCI