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PEM hydrolysis hydrogen production titanium metal bipolar plate and preparation method thereof

A technology for hydrogen production and titanium metal production by hydrolysis, used in metal processing equipment, non-precious metal oxide coatings, electrodes, etc., can solve the problems of poor forming process performance, reduced hydrogen production capacity, and high cost of bipolar plates The effect of fine and uniform organization, weight reduction and high interface bonding strength

Pending Publication Date: 2022-06-24
宁波福至新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Traditional stainless steel bipolar plates are prone to corrosion during long-term operation, and their corrosion products are likely to cause catalyst poisoning, resulting in a significant reduction in hydrogen production capacity
Titanium metal has good corrosion resistance and mechanical strength, but its forming and processing performance is not good, and the cost of the prepared bipolar plate is high

Method used

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  • PEM hydrolysis hydrogen production titanium metal bipolar plate and preparation method thereof
  • PEM hydrolysis hydrogen production titanium metal bipolar plate and preparation method thereof
  • PEM hydrolysis hydrogen production titanium metal bipolar plate and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] 1) Preparation of materials: Take commercial nickel powder, cobalt powder, pure titanium powder, metal tantalum and niobium powder; according to the mass ratio, take 15 parts of nickel powder and 85 parts of titanium powder for mixing, and then take 1% of cobalt by mass ratio, and mix them into powder Material Ⅰ;

[0047] According to the mass ratio, get 30 parts of metal tantalum powder, 30 parts of niobium powder, 30 parts of titanium powder and 10 parts of expanded graphite powder, then get 1% cobalt by mass ratio, and mix it into powder II;

[0048] 2) Ball milling pretreatment: After powder I and powder II are mechanically alloyed separately in a ball mill, paraffin compound additives are added to powder I and powder II after mechanical alloying in a ball mill, and mixed evenly to obtain ball mill pretreated Powder I and Powder II; wherein, the amount of paraffin composite additives accounts for 3% of the mass ratio of the respective powders, the paraffin composite...

Embodiment 2

[0052] 1) Preparation of materials: Take commercial nickel powder, cobalt powder, pure titanium powder, metal tantalum and niobium powder; according to the mass ratio, take 10 parts of nickel powder and 90 parts of titanium powder for mixing, and then take 3% cobalt by mass ratio and mix them into powder Material Ⅰ;

[0053] According to the mass ratio, get 25 parts of metal tantalum powder, 25 parts of niobium powder, 30 parts of titanium powder and 20 parts of expanded graphite powder, get 2% cobalt of mass ratio again, mix into powder material II;

[0054] 2) Ball milling pretreatment: After powder I and powder II are mechanically alloyed separately in a ball mill, paraffin compound additives are added to powder I and powder II after mechanical alloying in a ball mill, and mixed evenly to obtain ball mill pretreated Powder Ⅰ and powder Ⅱ; the amount of paraffin compound added accounts for 4% of the mass ratio of the respective powders, the paraffin compound additive is comp...

Embodiment 3

[0058] 1) Preparation of materials: Take commercial nickel powder, cobalt powder, pure titanium powder, metal tantalum and niobium powder; according to the mass ratio, take 30 parts of nickel powder and 70 parts of titanium powder for mixing, and then take 1% cobalt by mass ratio, and mix them into powder Material Ⅰ;

[0059] According to the mass ratio, get 30 parts of metal tantalum powder, 25 parts of niobium powder, 30 parts of titanium powder and 15 parts of expanded graphite powder, then get 5% cobalt in mass ratio, and mix it into powder II;

[0060] 2) Ball milling pretreatment: After powder I and powder II are mechanically alloyed separately in a ball mill, paraffin compound additives are added to powder I and powder II after mechanical alloying in a ball mill, and mixed evenly to obtain ball mill pretreated Powder Ⅰ and powder Ⅱ; wherein, the amount of paraffin wax added accounts for 5% of the mass ratio of the respective powders, and the paraffin wax composite addit...

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Abstract

The invention discloses a PEM hydrolysis hydrogen production titanium metal bipolar plate and a preparation method thereof, and the bipolar plate is prepared by weighing nickel powder, cobalt powder, pure titanium powder, metal tantalum-niobium powder I and metal tantalum-niobium powder II according to a certain mass ratio, and performing compaction, sintering and hot rolling on the nickel powder, the cobalt powder, the pure titanium powder, the metal tantalum-niobium powder I and the metal tantalum-niobium powder II. The bipolar plate disclosed by the invention has the comprehensive properties of oxidation resistance, high corrosion resistance, high surface conductivity, high corrosion resistance, high strength, easiness in stamping deformation, low cost and the like. The contact resistance of the bipolar plate is lower than 5 m omega / cm < 2 >, the corrosion current density in an anode environment is lower than 9 * 10 <-8 > A / cm < 2 >, the room-temperature tensile elongation is larger than 15%, the thickness of an oxide layer is lower than 1 micron after the bipolar plate operates for 24 h under the cell voltage of 1.6-1.8 v, and the area fraction is smaller than 3%.

Description

technical field [0001] The invention belongs to the field of hydrogen production from titanium alloys and electrolyzed water, and in particular relates to a PEM hydrolysis hydrogen production titanium metal bipolar plate and a preparation method thereof. Background technique [0002] Based on the contradiction of unbalanced development of renewable energy, and the volatility and intermittent characteristics of wind power, photovoltaic and other renewable energy sources, configuring energy storage systems is an effective means to solve the current large-scale curtailment of wind and light. Through the technology of abandoning wind and abandoning photovoltaic power to electrolyze water to produce hydrogen, the conversion of electricity to hydrogen can be realized, and renewable energy can be rationally used, while the fluctuation of grid connection can be stabilized, and the time-space translation of energy can be realized, which has great application value for the implementati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F3/10C22C14/00C22F1/18B22F7/02B22F1/103B22F3/18C25B1/04C25B11/036C25B11/046
CPCC22C14/00B22F3/1007C22F1/183B22F7/02B22F3/18C25B1/04C25B11/036C25B11/046B22F2003/185
Inventor 任忠平尹国钦陈绍文郭永华杨正军卞海刚吴罗叶森莹
Owner 宁波福至新材料有限公司
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