A proton exchange membrane water electrolyzer structure and anode plate

Abstract

The invention discloses a proton exchange membrane water electrolyzer structure and an anode plate. The proton exchange membrane water electrolyzer structure includes an anode plate, an anode diffusion layer, a CCM membrane electrode, a cathode diffusion layer and a cathode plate. The anode plate includes a fluid distribution area, a circular arc channel reaction area and a point flow field reaction area; the anode plate fluid distribution area is an arc-shaped stepped flow field area that tapers from both sides to the center of the circle, and a quasi-elliptical distribution is set in the middle of the area. The structure, the part of the anode plate near the water inlet is the arc flow channel reaction zone, and the end area of ​​the flow field is the point flow field reaction zone. The invention ensures the uniform diffusion of the reaction water in each flow channel after entering the flow field by setting the fluid distribution area and the quasi-elliptical distribution structure; the flow resistance of the reaction water is reduced by the arc-shaped flow channel of the arc-shaped flow field, and the reaction water is improved. Transmission efficiency; through the lattice structure of the point flow field, the formation of bubble embolism is reduced, the mass transfer capacity of the reaction water is enhanced, and the performance of the electrolyzer is improved.

Description

technical field [0001] The invention belongs to the field of electrolysis and relates to an electrolytic hydrogen production technology, in particular to a structure of a proton exchange membrane water electrolyzer and an anode plate. Background technique [0002] With the continuous development of the world's energy technology, hydrogen energy has been placed high hopes by countries all over the world due to its high efficiency and low pollution. Hydrogen production by proton exchange membrane water electrolysis is one of the most common hydrogen production methods. Its technology is similar to the reverse reaction of proton exchange membrane fuel technology at 30-45 degrees. The principle is to pump the reaction water to the anode, where it is decomposed into Oxygen O 2 , proton H + and e - , proton H + Then through the proton exchange membrane to reach the cathode, on the cathode side and the electron e - combine to form hydrogen. The advantages of proton exchange m...

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Problems solved by technology

[0003] At present, there are still many technical problems in proton exchange membrane water electrolysis, such as the restriction of the oxygen generated on the transfer of reaction water in the two-phase flow on the anode side. Therefore, it is necessary to design a new type of two-phase that is conducive to the transportation and diffusion of reaction water. transport flow field

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