CN114752946B - Preparation method of electrocatalytic electrolysis water bipolar plate - Google Patents

Preparation method of electrocatalytic electrolysis water bipolar plate Download PDF

Info

Publication number
CN114752946B
CN114752946B CN202210373297.0A CN202210373297A CN114752946B CN 114752946 B CN114752946 B CN 114752946B CN 202210373297 A CN202210373297 A CN 202210373297A CN 114752946 B CN114752946 B CN 114752946B
Authority
CN
China
Prior art keywords
electrode
bipolar plate
cathode
preparation
electrodeposition
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN202210373297.0A
Other languages
Chinese (zh)
Other versions
CN114752946A (en
Inventor
刘中清
王晓荣
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Chengdu Wanrongda Technology Co ltd
Sichuan University
Original Assignee
Chengdu Wanrongda Technology Co ltd
Sichuan University
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Chengdu Wanrongda Technology Co ltd, Sichuan University filed Critical Chengdu Wanrongda Technology Co ltd
Priority to CN202210373297.0A priority Critical patent/CN114752946B/en
Publication of CN114752946A publication Critical patent/CN114752946A/en
Application granted granted Critical
Publication of CN114752946B publication Critical patent/CN114752946B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • 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
    • 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
    • C25B11/02—Electrodes; Manufacture thereof not otherwise provided for characterised by shape or form
    • C25B11/036—Bipolar electrodes
    • 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
    • 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
    • C25B11/046—Alloys
    • 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

Landscapes

  • 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)
  • Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
  • Electrodes For Compound Or Non-Metal Manufacture (AREA)

Abstract

The invention discloses a preparation method of an electrocatalytic electrolysis water bipolar plate. The invention takes an iron sheet or a stainless steel sheet as a current collector, adopts a mild electrochemical in-situ growth and surface modification method, and prepares the bipolar plate which can simultaneously perform excellent hydrogen evolution and oxygen evolution in alkaline electrolyte. The bipolar plate has excellent electrocatalytic activity and stable performance, and can be connected in series or in parallel as required in the water electrolysis process to form the water electrolysis hydrogen production system. The raw materials for preparing the bipolar plate are iron sheets or stainless steel sheets, the raw materials are low in cost, and the preparation cost of the electrode per unit area is only 1/6-1/5 of that of the prior art (foam nickel); the preparation process does not need high-temperature and high-pressure reaction conditions, and the electrolyte does not contain any organic components, so that the preparation process is environment-friendly; therefore, the preparation method of the invention can obviously reduce the cost of the bipolar plate and reduce the environmental pollution, and has the advantages of simple and convenient preparation process, mild reaction conditions and easy industrialized production.

Description

Preparation method of electrocatalytic electrolysis water bipolar plate
Technical Field
The invention relates to the technical field of electrochemistry, in particular to a preparation method of an electrocatalytic electrolysis water bipolar plate.
Background
Hydrogen, which is a clean renewable energy source, has a combustion product of water, does not produce environmental pollution and greenhouse effect, and is considered to be an ideal energy carrier after fossil fuel is exhausted. Alkaline water electrolysis hydrogen production is one of the most attractive methods for producing renewable energy sources, which not only can produce high-purity hydrogen on a large scale, but also can establish a conversion path between electric energy (especially clean energy sources such as wind power, photoelectrical and valley water power, etc.) and hydrogen energy. At 25℃the theoretical decomposition voltage of water is 1.23V, the corresponding electrical energy consumption is 32.9kWh kg -1 H 2 . However, due to the high cathodic hydrogen evolution and anodic oxygen evolution overpotential, the actual electrical energy consumption is as high as 48 to 54kWh kg -1 H 2 . Therefore, the key problem of water electrolysis hydrogen production is to reduce the overpotential of cathodic hydrogen evolution and/or anodic oxygen evolution in order to produce them with high efficiency at as low energy input as possibleHydrogen gas.
The Pt group metals and Ru, ir based compounds have heretofore been considered to be optimal catalysts for HER and OER performance, respectively, when IrO 2 And Pt for OER and HER, respectively, can reach 10mA cm when an external voltage of 1.5V is applied -2 However, the current density cannot be applied to large-scale industrialization due to the high price and scarce resources of Pt, ir, ru and the like. Over the last decade, great progress has been made in understanding some of the key electrochemical transformations, particularly those involving water, hydrogen and oxygen. By means of volcanic curves, researchers start from the aspects of improving intrinsic activity, improving active site density, strengthening mass transfer and charge transfer in the process, strengthening desorption of hydrogen and oxygen and the like, and a series of non-noble metal high-efficiency electrocatalysts, such as transition metal sulfides, transition metal phosphides, monoatomic electrocatalysts and the like, are developed successively. Nevertheless, most oxygen evolution catalysts and hydrogen evolution catalysts which are expected to be used are as high as 10mA cm -2 High overpotential of 250-400 mV and 100mV are still needed respectively, and 10mA cm is reached when two electrodes are formed for water electrolysis -2 The tank voltage of (2) is about 1.75V. Therefore, the development of a preparation process of a non-noble metal electrolytic water electrode with higher performance is one of the current international research hotspots. In addition, in the water electrolysis system, the electrode material generally accounts for 30-60% of the total manufacturing cost, and in order to reduce the manufacturing cost of the electrocatalytic electrode and simplify the complexity of the water electrolysis system, the cheap conductive material is used as a current collector to prepare a bipolar plate (bipolar plate) with high activity hydrogen evolution and high activity oxygen evolution at the same time, so that the serial and parallel structures can be flexibly adopted according to the needs when the water electrolysis system is formed, and the water electrolysis system is one of important means for reducing the manufacturing cost of the water electrolysis system to realize large-scale application.
Disclosure of Invention
The invention aims to solve the problems of high price of electrode materials, harsh reaction conditions and large amount of waste discharged in the production process in the prior art, and provides a preparation method of an electrocatalytic electrolysis water bipolar plate.
In order to solve the technical problems, the invention adopts the following technical scheme: the preparation method of the electrocatalytic electrolysis water bipolar plate comprises the following steps:
s1, preprocessing an electrode, wherein the electrode is an iron sheet or a stainless steel sheet;
s2, taking the electrode pretreated in the S1 as a cathode, taking a graphite sheet or a stainless steel sheet as an anode, and taking transition metal sulfate and (NH) 4 ) 2 SO 4 Adopting constant current to carry out electrodeposition for electrolyte, washing a cathode, and drying to obtain an electrode subjected to constant current electrodeposition;
s3, taking the electrode subjected to constant current electrodeposition in S2 as a cathode, taking a graphite sheet or a stainless steel sheet as an anode, and taking NaH as a cathode 2 PO 2 And alkaline solution is electrolyte, constant potential is adopted to carry out electrodeposition, and the cathode is washed and dried to prepare an electrode after constant potential electrodeposition;
s4, using the electrode subjected to constant potential electrodeposition in the S3 as a working electrode, using a graphite sheet or a stainless steel sheet as an auxiliary electrode, using a saturated Ag/AgCl electrode as a reference electrode, scanning for 50-500 circles in an alkaline electrolyte at a speed of 50-300 mV/S within a range of-1.0V by adopting a cyclic voltammetry method, and obtaining the scanned working electrode as a bipolar plate.
Preferably, the pretreatment in S1 is that the electrode is derusted and polished by 3mol/L HCl for 10 to 30 seconds, then treated by ultra-pure water for 5 to 15 minutes in an ultrasonic mode and then dried by cold air.
Preferably, the constant current in the S2 is 50-250 mA/cm 2 The electrodeposition time is 5 to 20 minutes.
Preferably, the transition metal sulfate in S2 is CoSO 4 Or NiSO 4 The CoSO 4 Or NiSO 4 0.05 to 0.5mol/L; said (NH) 4 ) 2 SO 4 0.1 to 0.5mol/L.
Further preferably, the constant potential in S3 is-0.5 to-1.2V (relative to the saturated Ag/AgCl electrode), and the electrodeposition time is 50 to 300 seconds.
Further preferably, the alkaline solution in the step S3 is NaOH or KOH, and the NaOH or KOH is 0.5mol/L; the NaH is 2 PO 2 0.01 to 0.1mol/L.
Still more preferably, the alkaline electrolyte in S4 is 1.0mol/L KOH.
The invention has the beneficial effects that:
firstly, taking an iron sheet or a stainless steel sheet as a current collector, adopting a mild electrochemical in-situ growth and surface modification method to prepare a bipolar plate capable of simultaneously separating hydrogen and oxygen in alkaline electrolyte, wherein the bipolar plate has excellent electrocatalytic activity and stable performance, and can be connected in series or in parallel as required in the water electrolysis process to form a water electrolysis hydrogen production system;
two) bipolar plates prepared by the method of the invention form a two-electrode water electrolysis system, 1mol/L KOH is used as electrolyte, and the cathode current density is 10mA/cm at room temperature 2 The tank voltage of (2) is about 1.60V; at a cathode current density of 100mA/cm 2 The tank voltage of (2) is about 1.90V; the bipolar plate assembled two-electrode system prepared by the method of the invention has a cathode current density of 40mA/cm 2 The voltage fluctuation of the tank continuously operated for 48 hours at room temperature is only 5-10 mV;
thirdly, the raw material of the bipolar plate prepared by the invention is an iron sheet or a stainless steel sheet, the raw material cost is low, and the preparation cost of the electrode per unit area is only 1/6-1/5 of that of the prior art (foam nickel); the preparation process does not need high-temperature and high-pressure reaction conditions, and the electrolyte does not contain any organic components, so that the preparation process is environment-friendly; therefore, the preparation method of the invention can obviously reduce the cost of the bipolar plate and reduce the environmental pollution, and has the advantages of simple and convenient preparation process, mild reaction conditions and easy industrialized production.
Drawings
FIG. 1 is a flow chart of the technical principle of the present invention for preparing a bipolar plate;
FIG. 2 is NiOOH@Ni of example 1 x Current density-voltage curve of two electrode system of P/FF bipolar plate;
FIG. 3 is NiOOH@Ni of example 1 x The constant current of the two-electrode system of the P/FF bipolar plate is 40mA/cm 2 Time voltage-time curve;
FIG. 4 is Ni in example 2 y (Co) 1-y OOH@NiCo 1-x Current density-voltage curve of two electrode system of P/SF bipolar plate;
FIG. 5 is an embodimentNi in 2 y (Co) 1-y OOH@NiCo 1-x The constant current of the two-electrode system of the P/SF bipolar plate is 40mA/cm 2 Voltage versus time curve for time;
FIG. 6 is CoOOH@Co of example 3 x Voltage-current density curves for two electrode systems of a P/SF bipolar plate;
FIG. 7 is CoOOH@Co of example 3 x The current density of the two-electrode system of the P/SF bipolar plate is 10mA/cm 2 、40mA/cm 2 Voltage versus time curve.
Detailed Description
The invention will be further described with reference to the drawings and the specific examples.
Example 1
Step one: and (5) rust removal and polishing pretreatment of the iron sheet. Polishing an iron sheet with the thickness of 0.3mm in 3mol/L HCl for 15s, taking out, repeatedly washing with ultrapure water, washing in the ultrapure water for 10 minutes, taking out, drying with cold air, and standing by.
Step two: nickel hydride is electrodeposited. Taking the polished iron sheet as a cathode, and 0.1mol/L NiSO 4 +0.5mol/L(NH 4 ) 2 SO 4 The high-purity graphite plate is used as an anode, the distance between electrodes is 5cm, the temperature is room temperature, and the temperature is 150mA/cm 2 And (5) electrodepositing for 10 minutes under constant current, taking out, washing with ultrapure water, and drying with cold air for later use.
Step three: the electrode prepared in the second step is used as a cathode, a stainless steel sheet is used as an auxiliary electrode, and 0.5mol/L KOH+0.05mol/L NaH is used 2 PO 2 The electrolyte is taken out after being electrodeposited at-1.0V (relative to a saturated Ag/AgCl electrode) for 150 seconds, washed clean by ultrapure water and dried by cold air for standby.
Step four: the electrode prepared in the third step is used as a working electrode, a high-purity graphite plate is used as an auxiliary electrode, a saturated Ag/AgCl electrode is used as a reference electrode, and 150 circles are scanned by a cyclic voltammetry method at a rate of 100mV/s within a range of-1.0V. The prepared electrode is prepared by taking an iron sheet as a current collector to grow NiOOH@Ni in situ x P bipolar plate NiOOH@Ni x P/FF (FF represents an iron piece).
NiOOH@Ni prepared in the fourth step x P/FF bipolar plate as cathodeAnode, 1.0mol/L KOH as electrolyte, room temperature, non-woven fabric as diaphragm to form two-electrode water electrolysis system, and the current density at cathode is 10mA/cm 2 The cell voltage of (C) was 1.603V, and the current density at the cathode was 100mA/cm 2 Is 1.893V (as shown in fig. 2). The current density of the two-electrode system at the cathode is 40mA/cm 2 The continuous operation at room temperature for 48 hours has a tank voltage fluctuation of less than 10mV (as shown in FIG. 3).
Example 2
Step one: rust removal and polishing pretreatment of stainless steel sheets. Polishing a stainless steel sheet with the thickness of 0.3mm in 3mol/L HCl for 30s, taking out, repeatedly washing with ultrapure water, washing in the ultrapure water for 15 minutes, taking out, drying with cold air, and standing by.
Step two: electrodepositing nickel cobalt hydride. Taking the polished iron sheet as a cathode, and 0.05mol/L NiSO 4 +0.05mol/L CoSO 4 +0.5mol/L(NH 4 ) 2 SO 4 The high-purity graphite plate is used as an anode, the distance between electrodes is 5cm, the temperature is room temperature, and the temperature is 200mA/cm 2 And (5) electrodepositing for 15 minutes under constant current, taking out, washing with ultrapure water, and drying with cold air for later use.
Step three: the electrode prepared in the second step is used as a cathode, a stainless steel sheet is used as an auxiliary electrode, and 0.5mol/L NaOH and 0.1mol/L NaH are used as auxiliary electrodes 2 PO 2 The electrolyte is taken out after being electrodeposited at-1.2V (relative to a saturated Ag/AgCl electrode) for 300 seconds, washed clean by ultrapure water and dried by cold air for standby.
Step four: the electrode prepared in the third step is used as a working electrode, a high-purity graphite plate is used as an auxiliary electrode, a saturated Ag/AgCl electrode is used as a reference electrode, and the electrode is scanned for 300 circles in a cyclic voltammetry at a speed of 150mV/s within a range of-1.0V. The prepared electrode is in-situ grown Ni by taking an iron sheet as a current collector y (Co) 1-y OOH@NiCo 1-x Bipolar plate Ni of P y (Co) 1-y OOH@NiCo 1-x P/SF (SF indicates stainless steel sheet).
Ni prepared in the fourth step y (Co) 1-y OOH@NiCo 1-x The P/SF bipolar plate is used as a cathode and an anode, 1.0mol/LKOH is used as electrolyte, the temperature is room temperature, and the non-woven fabric is used as a diaphragm to form two electrodesAn electrolytic water system, the current density at the cathode was measured to be 10mA/cm 2 The cell voltage of (C) was 1.574V, and the current density at the cathode was 100mA/cm 2 The tank voltage of (a) was 1.829V (as shown in fig. 4). The current density of the two-electrode system at the cathode is 40mA/cm 2 The voltage fluctuation of the tank operated continuously for 48 hours at room temperature is about 6mV (as shown in figure 5).
Example 3
Step one: rust removal and polishing pretreatment of stainless steel sheets. Polishing a stainless steel sheet with the thickness of 0.3mm in 3mol/L HCl for 30s, taking out, repeatedly washing with ultrapure water, washing in the ultrapure water for 15 minutes, taking out, drying with cold air, and standing by.
Step two: electrodepositing cobalt hydroxide. Taking polished stainless steel as a cathode, and 0.1mol/L CoSO 4 +0.25mol/L(NH 4 ) 2 SO 4 The high-purity graphite sheet is used as an anode, the distance between electrodes is 5cm, the temperature is room temperature, and the temperature is 50mA/cm 2 And (5) electrodepositing for 20 minutes under constant current, taking out, washing with ultrapure water, and drying with cold air for later use.
Step three: the electrode prepared in the second step is used as a cathode, a stainless steel sheet is used as an auxiliary electrode, and 0.5mol/L KOH+0.05mol/L NaH is used 2 PO 2 Is electrolyte, which is taken out after being electrodeposited at-1.0V (relative to a saturated Ag/AgCl electrode) for 200 seconds and washed clean by ultrapure water, and then dried by cold air for standby.
Step four: the electrode prepared in the third step is used as a working electrode, a high-purity graphite sheet is used as an auxiliary electrode, a saturated Ag/AgCl electrode is used as a reference electrode, and the electrode is scanned for 300 circles in a cyclic voltammetry at a rate of 250mV/s within a range of-1.0V. The prepared electrode takes a stainless steel sheet as a current collector to grow CoOOH@Co in situ x P bipolar plate CoOOH@Co x P/SF (SF indicates stainless steel sheet).
Coooh@co prepared in the fourth step x The P/SF bipolar plate is used as a cathode and an anode, 1.0mol/L KOH is used as electrolyte, the temperature is room temperature, the non-woven fabric is used as a diaphragm, a two-electrode water electrolysis system is formed, and the current density at the cathode is measured to be 10mA/cm 2 The cell voltage of (C) was 1.620V, and the current density at the cathode was 100mA/cm 2 Is 1.911V (as shown in fig. 6). The two-electrode system is used for cathode currentDensity of 10mA/cm 2 And 40mA/cm 2 The voltage fluctuation of the tank is about 5mV when the tank is continuously operated for 12 hours at room temperature (shown in figure 7).
The preparation process flow chart of the bipolar plate is shown in figure 1. The bipolar plate prepared by the method of the invention, which takes an iron sheet or a stainless steel sheet as a current collector and nickel or cobalt hydroxide @ nickel or cobalt phosphide as an active component, can be used as a cathode hydrogen evolution electrode and an anode oxygen evolution electrode in alkaline electrolyte such as KOH. When the two-electrode water electrolysis system is formed, a series or parallel system can be assembled according to the requirement, and when the series system is adopted, hydrogen is separated from one side of two sides of the electrode, and oxygen is separated from the other side of the electrode; when parallel systems are used, the electrodes are either simultaneously oxygen evolving or hydrogen evolving on both sides. The data of examples 1-3 fully demonstrate that bipolar plates prepared by the present invention form a two-electrode water electrolysis system with 1mol/L KOH as electrolyte and a cathodic current density of 10mA/cm at room temperature 2 The tank voltage of (2) is about 1.60V; at a cathode current density of 100mA/cm 2 The cell voltage of (2) is about 1.90V. The bipolar plate assembled two-electrode system prepared by the invention has a cathode current density of 40mA/cm 2 The voltage fluctuation of the tank continuously operated for 48 hours at room temperature is only 5-10 mV.
In conclusion, the preparation method of the bipolar plate is simple, no organic reagent is introduced into the electrolyte, the reaction condition is mild, the bipolar plate is environment-friendly, the binding force between the active component and the substrate is strong, the contact resistance is low, the electrocatalytic activity is high, the bipolar plate is not easy to fall off under the cavitation effect of oxygen or hydrogen evolution, and the performance is stable.
The specification and figures are to be regarded in an illustrative rather than a restrictive sense, and one skilled in the art, in light of the teachings of this invention, may make various substitutions and alterations to some of its features without the need for inventive faculty, all being within the scope of this invention.

Claims (3)

1. The preparation method of the electrocatalytic electrolysis water bipolar plate is characterized by comprising the following steps of:
s1, preprocessing an electrode, wherein the electrode is an iron sheet or a stainless steel sheet;
s2, taking the electrode pretreated in the S1 as a cathode, taking a graphite sheet or a stainless steel sheet as an anode, and taking transition metal sulfate and (NH) 4 ) 2 SO 4 Adopting constant current to carry out electrodeposition for electrolyte, washing a cathode, and drying to obtain an electrode subjected to constant current electrodeposition; the constant current is 50-250 mA/cm 2 The electrodeposition time is 5-20 minutes; the transition metal sulfate is CoSO 4 Or NiSO 4 The CoSO 4 Or NiSO 4 0.05-0.5 mol/L; said (NH) 4 ) 2 SO 4 0.1 to 0.5mol/L;
s3, taking the electrode subjected to constant current electrodeposition in S2 as a cathode, taking a graphite sheet or a stainless steel sheet as an anode, and taking NaH as a cathode 2 PO 2 And alkaline solution is electrolyte, constant potential is adopted to carry out electrodeposition, and the cathode is washed and dried to prepare an electrode after constant potential electrodeposition; the constant potential is-0.5 to-1.2V, and is relative to a saturated Ag/AgCl electrode; the electrodeposition time is 50-300 seconds; the alkaline solution is NaOH or KOH, and the NaOH or KOH is 0.5mol/L; the NaH is 2 PO 2 0.01 to 0.1mol/L;
and S4, using the electrode subjected to constant potential electrodeposition in the step S3 as a working electrode, using a graphite sheet or a stainless steel sheet as an auxiliary electrode, using a saturated Ag/AgCl electrode as a reference electrode, scanning for 50-500 circles in an alkaline electrolyte at a speed of 50-300 mV/S by adopting a cyclic voltammetry method within a range of-1.0V, and obtaining the scanned working electrode as the bipolar plate.
2. The preparation method according to claim 1, wherein the pretreatment in S1 is to remove rust and polish the electrode with 3mol/L HCl for 10-30 seconds, then to ultrasonically treat the electrode with ultrapure water for 5-15 minutes and then to blow-dry the electrode with cold air.
3. The method according to claim 1, wherein the alkaline electrolyte in S4 is 1.0mol/L KOH.
CN202210373297.0A 2022-04-11 2022-04-11 Preparation method of electrocatalytic electrolysis water bipolar plate Active CN114752946B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210373297.0A CN114752946B (en) 2022-04-11 2022-04-11 Preparation method of electrocatalytic electrolysis water bipolar plate

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210373297.0A CN114752946B (en) 2022-04-11 2022-04-11 Preparation method of electrocatalytic electrolysis water bipolar plate

Publications (2)

Publication Number Publication Date
CN114752946A CN114752946A (en) 2022-07-15
CN114752946B true CN114752946B (en) 2023-06-20

Family

ID=82328847

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210373297.0A Active CN114752946B (en) 2022-04-11 2022-04-11 Preparation method of electrocatalytic electrolysis water bipolar plate

Country Status (1)

Country Link
CN (1) CN114752946B (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110592611A (en) * 2019-09-23 2019-12-20 苏州大学 Catalytic electrode and preparation method and application thereof

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016161205A1 (en) * 2015-03-31 2016-10-06 Yujie Sun Bifunctional water splitting catalysts and associated methods
CN108193227A (en) * 2016-12-08 2018-06-22 中国科学院大连化学物理研究所 Oxygen electrode and its preparation and application are analysed in the electro-catalysis of nickel-ferric spinel base
JP6406682B1 (en) * 2017-01-31 2018-10-17 国立大学法人弘前大学 Electrode production method and hydrogen production method
US20190100850A1 (en) * 2017-10-03 2019-04-04 Xerion Advanced Battery Corporation Electroplating Transitional Metal Oxides
TWI717070B (en) * 2019-10-23 2021-01-21 國家中山科學研究院 A method for preparing dual function large area catalyst electrode
CN110656348B (en) * 2019-10-25 2022-02-22 上海电力大学 Electrocatalytic oxygen evolution electrode and preparation and application thereof
CN114622238B (en) * 2020-11-27 2024-03-22 中国科学院大连化学物理研究所 Preparation and application of transition metal-based hydrogen and oxygen evolution dual-functional electrode
CN113215611A (en) * 2021-05-13 2021-08-06 华北电力大学 Transition metal phosphide catalyst nanoparticle, preparation method thereof and electrode
CN114164445B (en) * 2021-12-30 2024-03-26 青岛科技大学 V-Ni constructed based on doping and heterojunction strategy 3 FeN/Ni@N-GTs full-hydropower catalyst

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110592611A (en) * 2019-09-23 2019-12-20 苏州大学 Catalytic electrode and preparation method and application thereof

Also Published As

Publication number Publication date
CN114752946A (en) 2022-07-15

Similar Documents

Publication Publication Date Title
CN113512731B (en) Oxygen evolution electrocatalyst, preparation method and application thereof, and water electrolysis device
CN108425144B (en) Preparation method of karst foam nickel for producing oxygen by electrocatalytic total decomposition of hydrogen in water
CN110205636A (en) A kind of preparation method of self-cradling type three-dimensional porous structure double-function catalyzing electrode
CN108560017B (en) Amorphous cobalt-tungsten modified foamed nickel catalytic electrode, preparation method and application thereof
CN112647092B (en) Supported nickel-based composite hydrogen evolution catalyst and preparation method and application thereof
CN113637996B (en) Copper-based nano material for electrocatalytic reduction of carbon dioxide and preparation method thereof
CN110952111A (en) Two-step oxidation synthesized electrolytic water anode and preparation method thereof
CN110820006A (en) MoS2Nanoribbon embedded VS2Micro-flower self-supporting electrode and preparation method and application thereof
CN111939914B (en) Method for preparing high-activity ternary metal oxygen evolution catalyst by using waste copper foil
CN114752946B (en) Preparation method of electrocatalytic electrolysis water bipolar plate
CN116024583A (en) Nickel sulfide nano rod array electrocatalytic material and preparation method and application thereof
CN114300276B (en) Ni-Fe-S@NiCo 2 O 4 Nano-NF composite material and preparation method and application thereof
CN112981430B (en) Application of regeneration electrode of alkaline nickel-based battery in electrocatalytic hydrogen evolution reaction
CN114045509B (en) Seawater electrolysis device with sodium ion conduction and application thereof
CN116043259A (en) Based on Ni (OH) 2 Method for preparing formic acid and hydrogen by converting PET waste plastics through redox medium
CN114150343B (en) Nanometer antler-shaped NiMoCu catalyst and preparation method thereof
CN114808014A (en) Novel multilayer metal hydroxide electrocatalyst, preparation method and application thereof
CN110227467B (en) Three-layer coaxial oxygen production electrocatalyst and preparation method thereof
CN112708904A (en) Preparation method and application of carbon fiber loaded nano cobalt-molybdenum alloy catalyst
CN112126951A (en) Preparation method of oxygen evolution reaction electrocatalyst
CN115125569B (en) Nickel-iron hydroxide electrocatalyst, preparation method and application
CN115323393B (en) Method for preparing nickel-based bimetallic hydrogen evolution catalyst by anodic dissolution electrodeposition in eutectic ionic liquid
CN111276338B (en) Preparation method and application of CoO/NiOOH composite material
CN114717586B (en) Nickel-cobalt-sulfur/nickel net composite hydrogen and oxygen evolution electrode and preparation method thereof
CN117552031A (en) Preparation method of phosphorus-doped hydrogen evolution catalytic electrode

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant