Bipolar plate for proton exchange membrane fuel cell and preparation method of bipolar plate

• Main Authors: LU JIABIN, FU CEHUANG, WANG TONGJUN
• Format: Patent
• Language: Chinese; English
• Published: 02.05.2023
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

The invention provides a bipolar plate for a proton exchange membrane fuel cell and a preparation method thereof in the field of proton exchange membrane fuel cells, the bipolar plate comprises a substrate, a diversion unit and a sealing unit, the diversion unit and the sealing unit are connected to the substrate to form a flow field and a seal, the substrate comprises an anode plate, a cooling water flow field plate and a cathode plate, the cooling water flow field plate is located between the anode plate and the cathode plate, and the cooling water flow field plate is connected to the anode plate; each flow guide unit comprises a flow guide piece and a supporting strip, the supporting strips are embedded into the corresponding flow guide pieces, and mass transfer of partial areas in the flow field is adjusted by adjusting the interval width of the flow guide pieces. The mass transfer at the contact positions of the flow deflectors and the electrodes is enhanced through the flow deflectors of the porous stru