Electrode flow field plate and electrolytic water tank
A flow field plate and electrode technology, which is applied in the direction of electrolysis process, electrolysis components, electrode shape/type, etc., can solve the problems of complex design, difficult processing, and large resistance of reactants, etc., and achieve small mesh concentration difference and overall resistance Adjustable, overall high efficiency effect
Pending Publication Date: 2021-04-09
长春绿动氢能科技有限公司
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Problems solved by technology
However, due to the small pressure difference between the inlet and outlet, it is easy to cause uneven distribution of water and heat, resulting in poor performance of the electrolytic cell.
Relatively speaking, the serpentine flow field has greater resistance to the reactants due to its longer inlet and outlet distances, so that the reactants can diffuse more fully. However, due to its complicated design and difficult processing, it is not conducive to the diffusion of gases.
Method used
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Embodiment Construction
[0028] Embodiments of the invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.
[0029] Such as figure 1 and figure 2 As shown, the electrode flow field plate 100 according to the embodiment of the present invention includes a metal plate 1 and an expanded metal mesh 2 .
[0030] Metal plate 1 has in its thickness direction (such as figure 2 The opposite first surface 11 and second surface 12 in the front-rear direction shown). Metal plate 1 is provided with the water inlet 13 and the water outlet 14 that pass through along the thickness direction of metal plate 1, and water inlet 13 and water outlet 14 are along the length of metal plate 1 (as figure 1 up and down as shown) or widthwise (as in figure 1 shown in the left-right directio...
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Abstract
The invention disloses an electrode flow field plate and an electrolytic water tank. According to the embodiment of the invention, the electrode flow field plate comprises a metal plate and a metal plate net, the metal plate is provided with a first surface and a second surface which are opposite in the thickness direction of the metal plate, the metal plate is provided with a water inlet and a water outlet which are communicated in the thickness direction of the metal plate, and the metal plate net is provided with a water inlet and a water outlet which are communicated in the thickness direction of the metal plate. The water inlet and the water outlet are spaced from each other in the length or width direction of the metal plate and are oppositely arranged, the metal plate net is arranged on one of the first surface and the second surface of the metal plate, and the metal plate net is provided with a first end and a second end opposite to each other. The first end of the metal plate net is adjacent to the water inlet, and the second end is adjacent to the water outlet. The electrode flow field plate provided by the embodiment of the invention has the advantages of simple structure, adjustable overall resistance, small concentration difference of each mesh and high overall efficiency.
Description
technical field [0001] The invention relates to the field of fuel electrochemical devices, in particular to an electrode flow field plate and an electrolytic water tank. Background technique [0002] Hydrogen production by electrolysis of water mainly includes hydrogen production by alkaline electrolysis of water, proton exchange membrane electrolysis of water for hydrogen production, and solid oxide electrolysis of water for hydrogen production. Compared with hydrogen production by alkaline electrolysis of water, hydrogen production by proton exchange membrane electrolysis has the advantages of high efficiency, high hydrogen purity, and high current density. It does not require secondary purification and can be directly used by fuel cells. Compared with solid oxide water electrolysis for hydrogen production, the working temperature is moderate, and the requirements for material selection, sealing and operation control are not so strict. [0003] The flow field of the elect...
Claims
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IPC IPC(8): C25B1/04C25B9/60C25B9/17C25B11/03C25B15/02
CPCC25B1/04C25B11/03C25B15/02Y02E60/36
Inventor 张延伟梅武赵宇峰孙流莉
Owner 长春绿动氢能科技有限公司