Special-shaped current collector, PEM water electrolysis hydrogen production device and water electrolysis hydrogen production method

A technology for current collectors and water electrolysis, applied in the electrolysis process, electrolysis components, electrochemical generators, etc., can solve the problems of difficult assembly, increased internal resistance of the battery, complex components, etc., to achieve convenient and simple installation and reduce internal resistance. , the effect of reducing device composition

Inactive Publication Date: 2020-09-04
UNIV OF SCI & TECH BEIJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In addition, the components of the bipolar plate and the diffusion layer are complicated and difficult to assemble. At the same time

Method used

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  • Special-shaped current collector, PEM water electrolysis hydrogen production device and water electrolysis hydrogen production method
  • Special-shaped current collector, PEM water electrolysis hydrogen production device and water electrolysis hydrogen production method
  • Special-shaped current collector, PEM water electrolysis hydrogen production device and water electrolysis hydrogen production method

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preparation example Construction

[0046] The preparation and processing methods of the present invention include thermal sintering of porous materials, etching, mechanical processing, stamping and the like.

[0047] One of the features of the device form of the present invention is: the special-shaped current collector is made of porous titanium material with a porosity of 0.7, the overall thickness is 1 mm, the surface flow channel is in the form of parallel flow channels, and the ridge width of the flow channel is 1 mm. The ridges are spaced 1 mm apart and have a depth of 0.5 mm.

[0048] The second feature of the device form of the present invention is: the special-shaped current collector is made of porous titanium material with a porosity of 0.7, the overall thickness is 0.5mm, and it adopts the form of straight perforation, and the hole type is a circular hole with a diameter of 400 μm, uniform Distributed to achieve a surface porosity of 0.6.

[0049] The third feature of the device form of the present...

Embodiment 1

[0054] refer to figure 1 , which shows a special-shaped current collector made of porous titanium material with parallel flow channels according to one embodiment of the present invention. The whole part is 60mm long, 30mm wide and 1mm high. The runner adopts the form of parallel runner, the ridge width is 1mm, the runner width is 1mm, and the depth is 0.5mm. The porosity of the porous titanium material used is 0.7, and the processing method is integral thermal sintering.

Embodiment 2

[0056] refer to figure 2 , which shows a special-shaped current collector made of porous titanium material with straight through holes in one of the embodiments of the present invention. The whole part is 60mm long, 30mm wide and 0.5mm high. The porosity of the porous titanium material used is 0.7, and the processing method is integral thermal sintering. On this basis, through the design of the mask and photolithography, a circular hole with a diameter of 400 μm is obtained. Compared with the porosity of the overall surface area, the porosity is 0.6, and the required straight through-hole special-shaped current collector is obtained through etching.

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Abstract

The invention provides a special-shaped current collector, a PEM water electrolysis hydrogen production device and a water electrolysis hydrogen production method. The special-shaped current collectorcomprises a first channel composed of a porous substrate, and a second channel arranged along a flow channel formed in the top surface of the porous substrate or perpendicular to a straight through hole formed in the top surface of the porous substrate. The first channel and the second channel jointly form a gas-liquid transmission channel. The special-shaped current collector is a special-shapedcurrent collector device with the functions of a flow field plate and a gas-liquid diffusion layer of a fuel cell and a water electrolysis cell, so that the purposes of reducing the cost and optimizing the structures of the fuel cell and the water electrolysis cell can be achieved.

Description

【Technical field】 [0001] The invention relates to the field of bipolar plates and diffusion layers of a PEM hydrogen fuel cell and a PEM water electrolysis cell, in particular to a special-shaped current collector, a device for producing hydrogen by PEM electrolysis of water, and a method for producing hydrogen by electrolysis of water. 【Background technique】 [0002] Vehicle-mounted fuel cell vehicles have received strong support from the state in recent years, but their application is limited by the development of hydrogen production, hydrogen storage, and fuel cell technologies. Among them, PEM fuel cell and PEM water electrolysis hydrogen production technology are the key, and it is necessary for these two Carry out research on key materials and components in technology to achieve high performance, long life and low-cost manufacturing. [0003] The main components of a typical PEM water electrolysis cell include cathode and anode bipolar plates, cathode and anode diffusi...

Claims

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Application Information

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IPC IPC(8): C25B11/03C25B9/08C25B1/10H01M8/0232H01M8/0241H01M8/0258H01M8/026H01M8/0263H01M8/0656C25B9/19
CPCH01M8/0258H01M8/0241H01M8/0232H01M8/026H01M8/0263H01M8/0656Y02E60/50
Inventor 刘高阳柳小祥王新东杨兆一王冬冬杨金梦毕俊
Owner UNIV OF SCI & TECH BEIJING
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