Proton exchange membrane water electrolyser structure and anode plate

Abstract

The invention discloses a proton exchange membrane water electrolyser structure and an anode plate. The proton exchange membrane water electrolyser structure comprises the anode plate, an anode diffusion layer, a CCM membrane electrode, a cathode diffusion layer and a cathode plate. The anode plate comprises a fluid distribution area, an arc flow channel reaction area and a dotted flow field reaction area; and an anode plate fluid distribution area is an arc-shaped stepped flow field area which is gradually reduced from two sides to the circle center, an ellipse-like distribution structure is arranged in the middle of the area, the part, close to a water inlet, of the anode plate is an arc-shaped flow channel reaction area, and a flow field tail end area is a dot-shaped flow field reaction area. According to the invention, uniform diffusion of reaction water in each flow channel after entering a flow field is ensured by arranging the ellipse-like distribution structure in a fluid distribution area; the flow resistance of reaction water is reduced through an arc-shaped flow channel of the arc-shaped flow field, and the transmission efficiency of the reaction water is improved; and through the dot-matrix type structure of the dot-shaped flow field, formation of bubble plugs is reduced, the mass transfer capacity of reaction water is enhanced, and then the performance of the electrolytic cell 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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