CN109183067A - A kind of new and effective water electrolysis hydrogen production carbon-based electrode plate - Google Patents
A kind of new and effective water electrolysis hydrogen production carbon-based electrode plate Download PDFInfo
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- CN109183067A CN109183067A CN201811398340.9A CN201811398340A CN109183067A CN 109183067 A CN109183067 A CN 109183067A CN 201811398340 A CN201811398340 A CN 201811398340A CN 109183067 A CN109183067 A CN 109183067A
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- electrode plate
- hydrogen production
- water electrolysis
- electrolysis hydrogen
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B11/00—Electrodes; Manufacture thereof not otherwise provided for
- C25B11/04—Electrodes; Manufacture thereof not otherwise provided for characterised by the material
- C25B11/042—Electrodes formed of a single material
- C25B11/043—Carbon, e.g. diamond or graphene
- C25B11/044—Impregnation of carbon
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B1/00—Electrolytic production of inorganic compounds or non-metals
- C25B1/01—Products
- C25B1/02—Hydrogen or oxygen
- C25B1/04—Hydrogen or oxygen by electrolysis of water
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/36—Hydrogen production from non-carbon containing sources, e.g. by water electrolysis
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Electrodes For Compound Or Non-Metal Manufacture (AREA)
- Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
Abstract
The present invention provides a kind of new and effective water electrolysis hydrogen production electrode plate, it is characterised in that: the electrode plate is a kind of carbon-based plate, while when being used for water electrolysis hydrogen production as cathode and anode, hydrogen generation efficiency is 1 ~ 3 times high compared with stainless steel material.The manufacture craft of the carbon-based plate include: it is broken, resin dipping, solidification, milling, kneading, molding, carbonize and cut.Electrode plate raw material sources of the invention are extensive, and production technology is clear, at low cost, and hydrogen generation efficiency is high.
Description
Technical field
The present invention relates to a kind of carbon-based plates and preparation method thereof, and in particular to a kind of carbon base plate for water electrolysis hydrogen production
Material.
Background technique
Hydrogen Energy is a kind of clean renewable energy, with the gradual perfection of fuel cell key technology, the demand of Hydrogen Energy
It is increasing.Water electrolysis hydrogen production technology maturation, equipment is simple, and hydrogen production process is pollution-free, and the purity is high of gained hydrogen, is a kind of
Sustainable hydrogen producing technology.
Currently, the alloy that the electrode plate of water electrolysis hydrogen production has plated transition metal element frequently with surface is made, cost
It is higher, and electrolytic efficiency is not overall high.Other than the overpotential of pole plate itself is higher, another major reason is that effect is precipitated in hydrogen
Rate is not high, that is, in electrolytic process, and a large amount of microbubbles of generation are attached to polar board surface, and some of bubbles cannot be immediately
It is detached from pole plate, causes the effective area of electrode plate to reduce, increases reaction overpotential, and then cause electrolytic efficiency not high.
The active site for increasing electrode plate surface is conducive to electronics and proton is combined into the hydrogen atom of ADSORPTION STATE, and then is formed
The hydrogen of ADSORPTION STATE, and inhibiting air bubble growth then can be such that the hydrogen of ADSORPTION STATE is quickly desorbed, and improve electron transfer rate, Jin Erti
High electrolytic efficiency.
Summary of the invention
It is an object of the invention to: a kind of water electrolysis hydrogen production carbon-based electrode plate and preparation method thereof, the electrode plate are provided
Low manufacture cost, while when being used for water electrolysis hydrogen production as cathode and anode, hydrogen generation efficiency is high by 1 ~ 3 compared with stainless steel material
Times.
To achieve the above object, the technical scheme is that
A kind of carbon-based plate, manufacture craft include being crushed, resin dipping, solidification, milling, kneading, molding, carbonizing and cut.Institute
It states carbon-based plate while being used as cathode and anode for water electrolysis hydrogen production.
The discharging particle size range of the crushing process is 2cm ~ 5cm.
The process conditions of the resin dipping are that vacuum pressure is 2MPa~10MPa, and temperature is 50 DEG C ~ 150 DEG C.
The cured process conditions are that pressure is 1MPa~7MPa, and heating rate is 5 DEG C/h~20 DEG C/h, and temperature is
100 DEG C~200 DEG C, soaking time is 1h~4h.
The discharging partial size of the milling process is less than 50 μm.
The process conditions of the kneading are that the proportion of fine powder and coal tar pitch is 10:1~100:1, and temperature is 150 DEG C~350
℃。
The molding mode is vibration moulding or isostatic pressing.
The process conditions of the vibration moulding be vibration frequency be 5000 times/min ~ 12000 time/min, temperature be 50 DEG C ~
150℃。
The process conditions of the isostatic pressing are that pressure is 100MPa ~ 400MPa, and temperature is 50 DEG C ~ 150 DEG C.
The process conditions of the charing are that temperature is 650 DEG C~1100 DEG C, and heating rate is 10 DEG C/h~30 DEG C/h, heat preservation
Time is 1h~5h, and protective atmosphere is nitrogen or argon gas.
The cutting process refers to according to actual needs, and the semi-finished product of charing are processed into the electricity of various sizes on milling machine
Pole plate.
The alkaline electrolyte is KOH aqueous solution or NaOH aqueous solution, and mass fraction is 10% ~ 30%.
The DC voltage of the electrolytic hydrogen production is 2.0V ~ 10.0V, and current density is 10mA cm-2~100mA•cm-2。
As the above scheme is adopted, the invention has the characteristics that:
Electrode plate raw material sources of the invention are extensive, and production technology is clear, at low cost；Simultaneously as cathode and anode for being electrolysed
When water hydrogen manufacturing, hydrogen generation efficiency is 1 ~ 3 times higher than stainless steel material.
Specific embodiment
The embodiment that present invention will be further explained below with reference to specific examples.
Embodiment 1
1. calcined petroleum coke is crushed to 2cm ~ 5cm.
2. broken blocky petroleum coke is placed in impregnating autoclave, vacuum pressed leaching is carried out under conditions of temperature is 50 DEG C
Stain, impregnation pressure 3MPa.
3. the semi-finished product after dipping are put into solidification tank and carry out cure under pressure, pressure 1MPa, heating rate is 7 DEG C/
H, temperature are 150 DEG C, soaking time 2h.
4. broken, crushing, milling are to partial size less than 50 μm by the semi-finished product after solidification.
5. in fine powder: coal tar pitch=50:1 ratio carries out ingredient, is then uniformly mixed at 350 DEG C.
It is 150 DEG C in temperature, pressure is 6. the blank after kneading is transferred to molding die to be placed in isostatic pressing machine
It is formed under conditions of 100MPa, molding time is 30 minutes.It is then placed in cooling bay and carries out cooling treatment.
7. blank after cooling is put into retort, carbonized under the protection of nitrogen and argon gas, carbonization temperature is
1000 DEG C, heating rate is 20 DEG C/h, soaking time 3h.
8. the semi-finished product after charing are processed into the carbon-based plate of rectangle with a thickness of 5mm on milling machine, it then should by 2 pieces
The carbon-based plate of size is respectively put into electrolytic cell as cathode and anode, is 13.0% in the mass fraction of KOH solution, direct current
Voltage 5.0V, current density are 20.0mA cm-2Under conditions of carry out water electrolysis hydrogen production experiment, the production under the voltage as the result is shown
Hydrogen rate is 0.31mL min-1•cm-2, and the hydrogen-producing speed of stainless steel plate is 0.17mL min under same experimental conditions-1•cm-2,
The hydrogen generation efficiency of carbon-based plate is 1.80 times of stainless steel plate.
Embodiment 2
1. calcined petroleum coke is successively crushed, crushed, be milled and is sieved, after taking fine powder of the partial size less than 50 μm to carry out
Continuous processing.
2. in fine powder: coal tar pitch=65:1 ratio carries out ingredient, is then uniformly mixed at 300 DEG C.
It is 150 DEG C in temperature, pressure is 3. the blank after kneading is transferred to molding die to be placed in isostatic pressing machine
It is pressed and molded under conditions of 150MPa, molding time is 30 minutes.Then it is placed into cooling bay and carries out cooling treatment, to blank
It is cooled to room temperature.
4. blank after molding is placed in impregnating autoclave, vacuum pressed dipping, leaching are carried out under conditions of temperature is 50 DEG C
Stain pressure is 5MPa.
5. the semi-finished product after dipping are put into solidification tank and carry out cure under pressure, pressure 1MPa, heating rate is 7 DEG C/
H, temperature are 150 DEG C, soaking time 2h.
6. the semi-finished product after solidification are put into retort, carbonized under the protection of nitrogen and argon gas, carbonization temperature
It is 1000 DEG C, heating rate is 20 DEG C/h, soaking time 4h.
7. the carbon-based plate of the rectangle that the semi-finished product after charing are processed into 5mm on milling machine, then by 2 pieces of sizes
Carbon-based plate is respectively put into electrolytic cell as cathode and anode, is 13.0% in the mass fraction of KOH solution, DC voltage
5.0V current density is 20.0mA cm-2Under conditions of carry out water electrolysis hydrogen production experiment, the production hydrogen speed under the voltage as the result is shown
Rate is 0.39mL min-1•cm-2, and the hydrogen output of stainless steel plate is 0.17mL min under same experimental conditions-1•cm-2, carbon base plate
The hydrogen generation efficiency of material is 2.30 times of stainless steel plate.
It is described above to be merely exemplary for the purpose of the present invention, and not restrictive.It will be appreciated by those skilled in the art that not
Be detached from defined by claim in the case where spirit and scope, can many modifications may be made, variation or equivalent, but fall within this
Within the protection scope of patent of invention.
Claims (12)
1. a kind of water electrolysis hydrogen production electrode plate, it is characterised in that: electrode plate is a kind of carbon-based plate, and manufacture craft includes broken
Broken, resin dipping, milling, kneading, molding, is carbonized and is cut solidification；The carbon-based plate is used as cathode and anode to be used for simultaneously
When water electrolysis hydrogen production, hydrogen generation efficiency is 1 ~ 3 times high compared with stainless steel material.
2. water electrolysis hydrogen production electrode plate according to claim 1, it is characterised in that: the discharging partial size of the crushing process
Range is 2cm ~ 5cm.
3. water electrolysis hydrogen production electrode plate according to claim 1, it is characterised in that: the process conditions of the resin dipping
It is vacuum pressure for 2MPa~10MPa, temperature is 50 DEG C ~ 150 DEG C.
4. water electrolysis hydrogen production electrode plate according to claim 1, it is characterised in that: the cured process conditions are pressures
Power is 1MPa~7MPa, and heating rate is 5 DEG C/h~20 DEG C/h, and temperature is 100 DEG C~200 DEG C, and soaking time is 1h~4h.
5. water electrolysis hydrogen production electrode plate according to claim 1, it is characterised in that: the discharging partial size of the milling process
Less than 50 μm.
6. water electrolysis hydrogen production electrode plate according to claim 1, it is characterised in that: the process conditions of the kneading are thin
The proportion of powder and coal tar pitch is 10:1~100:1, and temperature is 150 DEG C~350 DEG C.
7. water electrolysis hydrogen production electrode plate according to claim 1, it is characterised in that: the molding mode is vibration moulding
Or isostatic pressing.
8. water electrolysis hydrogen production electrode plate according to claim 6, it is characterised in that: the process conditions of the vibration moulding
It is vibration frequency for 5000 times/min ~ 12000 time/min, temperature is 50 DEG C ~ 150 DEG C.
9. water electrolysis hydrogen production electrode plate according to claim 6, it is characterised in that: the technique item of the isostatic pressing
Part is that pressure is 100MPa ~ 400MPa, and temperature is 50 DEG C ~ 150 DEG C.
10. water electrolysis hydrogen production electrode plate according to claim 1, it is characterised in that: the process conditions of the charing are
Temperature is 650 DEG C~1100 DEG C, and heating rate is 10 DEG C/h~30 DEG C/h, and soaking time is 1h~5h, and protective atmosphere is nitrogen
Or argon gas.
11. water electrolysis hydrogen production electrode plate according to claim 1, it is characterised in that: the alkaline electrolyte is KOH water
Solution or NaOH aqueous solution, mass fraction are 10% ~ 30%.
12. water electrolysis hydrogen production electrode plate according to claim 1, it is characterised in that: the direct current of the electrolytic hydrogen production
Pressure is 2.0V ~ 10.0V, and current density is 10mA cm-2~100mA•cm-2。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811398340.9A CN109183067A (en) | 2018-11-22 | 2018-11-22 | A kind of new and effective water electrolysis hydrogen production carbon-based electrode plate |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811398340.9A CN109183067A (en) | 2018-11-22 | 2018-11-22 | A kind of new and effective water electrolysis hydrogen production carbon-based electrode plate |
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|---|---|
| CN109183067A true CN109183067A (en) | 2019-01-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811398340.9A Pending CN109183067A (en) | 2018-11-22 | 2018-11-22 | A kind of new and effective water electrolysis hydrogen production carbon-based electrode plate |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104099635A (en) * | 2011-04-29 | 2014-10-15 | 谭延泰 | Hydrogen production device adopting electrolyzed water and method thereof |
| CN108046379A (en) * | 2017-12-11 | 2018-05-18 | 天津锦美碳材科技发展有限公司 | A kind of electrolytic sewage processing electrode plate |
-
2018
- 2018-11-22 CN CN201811398340.9A patent/CN109183067A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104099635A (en) * | 2011-04-29 | 2014-10-15 | 谭延泰 | Hydrogen production device adopting electrolyzed water and method thereof |
| CN108046379A (en) * | 2017-12-11 | 2018-05-18 | 天津锦美碳材科技发展有限公司 | A kind of electrolytic sewage processing electrode plate |
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Effective date of registration: 20190912 Address after: 242000 Northwest Intersection of Tieshan Road Qingyijiang Avenue, Xuancheng Economic and Technological Development Zone, Xuancheng City, Anhui Province Applicant after: Anhui brocade Carbon Technology Development Co., Ltd. Address before: 301505 West Side of Fukang Road, Lutai Economic Development Zone, Tangshan City, Hebei Province Applicant before: Tangshan Kimwan Special Carbon& Graphite Co., Ltd. |
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Application publication date: 20190111 |