Proton exchange membrane fuel cell for testing

Abstract

The invention provides a proton exchange membrane fuel cell for testing, and relates to the technical field of fuel cells. The proton exchange membrane fuel cell for testing comprises an upper end plate 1, a cathode plate 10, a membrane electrode 11, a partition plate 6, an anode plate 12 and a lower end plate 4, wherein the partition plate 6 is attached between the upper end plate 1 and the lowerend plate 4, and the partition plate is provided with a stepped hole 9, a gas dispersion area 8 and a conductive groove 7; the cathode plate 10, the membrane electrode 11 and the anode plate 12 are sequentially attached and packaged in the stepped hole 9, the upper end plate 1 is in direct contact with the cathode plate 10, and the anode plate 12 is in direct contact with the lower end plate 4; and the membrane electrode 11 is hermetically connected with a step end surface 92 of the stepped hole 9. According to the invention, the partition plate structure is additionally arranged to play a role of a sealing frame, so that the sealing problem of a bipolar plate of the fuel cell for testing is solved; the partition plate is provided with the gas dispersion area to promote uniform distribution of gas; and the problem of battery drainage is solved through a conductive groove plate.

Description

technical field [0001] The invention relates to the technical field of fuel cells, in particular to a proton exchange membrane fuel cell for testing. Background technique [0002] The structure of a proton exchange membrane fuel cell (PEMFC) includes end plates, membrane electrodes including gas diffusion layers, proton exchange membranes, and catalytic layers, flow field plates, and current collector plates. Among them, the flow field plate provides channels for fuel and oxidant to flow, and the current collector plate collects electrons, usually made of graphite or metal, and is the current channel between the electrode and the external circuit. At present, the most widely used battery structure is to combine the flow field plate and the current collector plate into one to form a bipolar plate, which also serves as a flow field channel and a current channel for the reaction gas. [0003] At present, when assembling PEMFC single cells, in order to ensure airtightness, the ...

AI Technical Summary

Problems solved by technology

However, in this battery structure, the sealing between the four-in-one electrode and the cation exchange membrane is compressed by applying external force, and the sealing effect is poor.

Moreover, the reaction gas can only enter the reaction zone from the electrode end face, the gas is not uniformly dispersed, the battery reaction efficiency is reduced, and the battery performance test is difficult.

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