Anti-CO fuel cell anode gas diffusion electrode with low mass transfer resistance and preparation method thereof

• Main Authors: YANG CHENG, ZHENG BOWEN, JI FENG, LUO RUOYIN, XIE JINGYING, DENG CHENGWEI, HAN TINGTING
• Format: Patent
• Language: Chinese; English
• Published: 25.08.2023
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

The invention discloses a preparation method of an anti-CO fuel cell anode gas diffusion electrode with low mass transfer resistance. The preparation method comprises the following steps: preparing a diffusion layer; coating the surface of the diffusion layer with outer catalyst layer slurry to obtain an outer catalyst layer; the slurry of the outer catalyst layer comprises an anti-CO platinum-based catalyst, a binder and a pore-forming agent; coating the surface of the outer catalyst layer with inner catalyst layer slurry to obtain an inner catalyst layer; the inner catalyst layer slurry comprises a platinum-based catalyst, a binder and a pore forming agent; the porosity of the outer catalyst layer is larger than that of the inner catalyst layer, and the average pore size of the outer catalyst layer is larger than that of the outer catalyst layer. The invention also discloses the anode gas diffusion electrode obtained by the preparation method. According to the invention, the mass transfer resistance can be