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Novel high-efficiency electrolysis water hydrogen production graphite-based electrode plate

A technology for electrode plate and electrolysis of water, which is applied in the direction of electrodes, electrolysis process, electrolysis components, etc. It can solve the problems of increasing reaction overpotential, high cost, and reduction of effective area of ​​electrode plate, etc., and achieves wide source of raw materials and clear production process , low cost effect

Inactive Publication Date: 2019-01-11
安徽锦美碳材科技发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the electrode plates for hydrogen production by electrolysis of water are often made of alloys coated with transition metal elements on the surface, which is expensive and the overall electrolysis efficiency is not high.
In addition to the high overpotential of the plate itself, another important reason is that the efficiency of hydrogen evolution is not high, that is, during the electrolysis process, a large number of microbubbles generated adhere to the surface of the plate, and some of the bubbles cannot immediately detach from the plate, resulting in The effective area of ​​the electrode plate is reduced, which increases the reaction overpotential, resulting in low electrolysis efficiency

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] ①Crush the calcined petroleum coke to 2cm~5cm.

[0026] ②Put the crushed massive petroleum coke in an impregnation tank, and carry out vacuum pressure impregnation at a temperature of 50°C, and the impregnation pressure is 3MPa.

[0027] ③Put the impregnated semi-finished product into a curing tank for pressure curing, the pressure is 1MPa, the heating rate is 10°C / h, the temperature is 150°C, and the holding time is 3h.

[0028] ④Crush, pulverize and grind the solidified semi-finished product until the particle size is less than 50 μm.

[0029] ⑤Put the fine powder into a graphitization furnace, and carry out graphitization under the protection of nitrogen and argon at a temperature of 2700°C, a heating rate of 20°C / h, and a holding time of 10h.

[0030] ⑥According to the ratio of fine powder: coal tar pitch = 40:1, mix evenly at 300°C.

[0031] ⑦ Transfer the kneaded billet into a compression mold and place it in an isostatic press for molding at a temperature of 15...

Embodiment 2

[0035] ① The calcined petroleum coke is crushed, pulverized, milled and sieved in sequence, and the fine powder with a particle size of less than 50 μm is taken for subsequent processing.

[0036] ②According to the proportion of fine powder: coal tar pitch = 60:1, mix evenly at 300°C.

[0037] ③ Transfer the kneaded billet into a molding die and place it in an isostatic press for molding under the conditions of a temperature of 150°C and a pressure of 200 MPa, and the molding time is 30 minutes. Then put it into the cooling pool for cooling treatment, and wait for the billet to cool to room temperature.

[0038] ④ Place the formed semi-finished product in an impregnation tank, and carry out vacuum pressure impregnation at a temperature of 50°C, and the impregnation pressure is 5MPa. The holding time is 2h.

[0039] ⑤Put the impregnated semi-finished product into a curing tank for pressure curing, the pressure is 1MPa, the heating rate is 5°C / h, and the temperature is 150°C. ...

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Abstract

The invention provides a novel high-efficiency electrolysis water hydrogen production graphite-based electrode plate. The graphite-based electrode plate is characterized in that the electrode plate isa graphite-based plate material, and when the electrode plate is used as a cathode and an anode at the same time for electrolysis water hydrogen production, the hydrogen production efficiency is 1 to3 times that of a stainless steel material. A manufacturing process of the graphite-based plate material includes crushing, resin impregnation, solidification, milling, graphitization, kneading, molding, carbonization and cutting. The electrode plate material is wide in source, the manufacturing technique is clear, cost is low, and the hydrogen production efficiency is high.

Description

technical field [0001] The invention relates to a graphite base material and a manufacturing method thereof, in particular to a graphite base material for hydrogen production by electrolyzing water. Background technique [0002] Hydrogen energy is a clean and renewable energy. With the gradual improvement of key fuel cell technologies, the demand for hydrogen energy is increasing. Electrolyzed water hydrogen production technology is mature, the equipment is simple, the hydrogen production process is pollution-free, and the purity of the hydrogen obtained is high, which is a sustainable hydrogen production technology. [0003] At present, electrode plates for hydrogen production by electrolysis of water are often made of alloys coated with transition metal elements on the surface, which is costly and the overall electrolysis efficiency is not high. In addition to the high overpotential of the plate itself, another important reason is that the efficiency of hydrogen evolution...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25B11/14C25B1/04
CPCC25B1/04C25B11/044Y02E60/36
Inventor 段佳琪陈学谦臧文平吕海龙高林徐树伟
Owner 安徽锦美碳材科技发展有限公司
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