CN105390705A - Preparation method of poly(2-phenylindole) supported catalyst electrode of fuel cell - Google Patents

Preparation method of poly(2-phenylindole) supported catalyst electrode of fuel cell Download PDF

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Publication number
CN105390705A
CN105390705A CN201510721884.4A CN201510721884A CN105390705A CN 105390705 A CN105390705 A CN 105390705A CN 201510721884 A CN201510721884 A CN 201510721884A CN 105390705 A CN105390705 A CN 105390705A
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China
Prior art keywords
electrode
phenylindone
poly
catalyst
preparation
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CN201510721884.4A
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何丹农
李玉真
陈俊琛
张春明
金彩虹
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Shanghai National Engineering Research Center for Nanotechnology Co Ltd
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Shanghai National Engineering Research Center for Nanotechnology Co Ltd
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/86—Inert electrodes with catalytic activity, e.g. for fuel cells
    • H01M4/88—Processes of manufacture
    • H01M4/8878—Treatment steps after deposition of the catalytic active composition or after shaping of the electrode being free-standing body
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/86—Inert electrodes with catalytic activity, e.g. for fuel cells
    • H01M4/90—Selection of catalytic material
    • H01M4/9008—Organic or organo-metallic compounds
    • 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
    • Y02E60/50—Fuel cells

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Inert Electrodes (AREA)
  • Catalysts (AREA)

Abstract

The invention discloses a preparation method of a poly(2-phenylindole) supported catalyst electrode of a fuel cell. The preparation method of the catalyst electrode mainly comprises three steps: preparation of an electrochemical solution, electrochemical polymerization of 2-phenylindole and electro-deposition of a catalyst. The conductive poly(2-phenylindole) as a catalyst carrier has good thermal and electrochemical properties and chemical stability and relatively high conductivity in alkaline and acidic environments, and has high adhesive force in a matrix material, so that, according to the catalyst electrode prepared by the preparation method, the dispersity of the catalyst and the durability of the electrode can be improved; and the utilization rate of a noble metal catalyst is improved.

Description

The preparation method of poly-(2-phenylindone) supported catalyst electrode of a kind of fuel cell
Technical field
The invention belongs to fuel cell electrode material technical field, be specifically related to the preparation method of poly-(2-phenylindone) supported catalyst electrode of a kind of fuel cell.
Background technology
Fuel cell have energy efficiency high, pollution-free, start the plurality of advantages such as rapid, all receive in scientific and technological circle and industrial circle and pay much attention to and be widely studied.Conventional fuel-cell catalyst is that the alloy of platinum or platinum is (as PtRu, PtRuOsIr etc.), because the noble metals such as platinum have empty d track, can with a lot of charged species generation suction-operated, and moderate strength, non-oxidizability, corrosion resistance and resistant to elevated temperatures ability are all very strong.But platinum is as a kind of scarce resource, and price is very expensive, therefore, need to improve platinum utilization as much as possible.At present, people mainly adopt carbon black as catalyst carrier, but a large amount of platinum or platinum alloy particulate easily enter into the micropore of carbon surface, this part platinum is caused to play catalytic action, therefore not high to platinum utilization, in addition, the easy oxidized corrosion of carbon carrier, causes the loss of catalyst.
Compared with conventional carbon black, conducting polymer has good conductivity, corrosion resistance and structural stability, can improve the decentralization of catalyst granules thus avoid above shortcoming as carrier, and preparation is simple.In addition, because the adhesion between conducting polymer and catalyst granules is comparatively large, catalyst granules is not easily reunited and is run off, and greatly can improve the utilance of catalyst.But in alkaline solution, easily there is degraded and electro-chemical activity inactivation in traditional conducting polymer, limits its scope of application as catalyst carrier.Therefore, a kind of novel conductive polymer is invented extremely important as the preparation method of supported catalyst electrode.
Summary of the invention
For overcoming the deficiencies in the prior art, the invention provides the preparation method of poly-(2-phenylindone) supported catalyst electrode of a kind of fuel cell.
The preparation method of poly-(2-phenylindone) supported catalyst electrode of fuel cell, it is characterized in that, the concrete steps of the method are:
(1) preparation of electrochemical solution:
2-phenylindone is dissolved in the mixed solution of BFEE and ether, makes the electrochemical solution that molar concentration is 10-50mmol/L;
(2) electrochemical polymerization of 2-phenylindone:
The electrochemical solution prepared is inserted in electrochemical reaction appts, this device take host material as work electrode, platinum for being reference electrode to electrode, Ag/AgCl, logical nitrogen 20 minutes removing dissolved oxygens in solution; Controlling potential scope in 0-1.5V (relative to saturated calomel electrode), polymerization electricity scope at 65-75mC/cm 2, adopt cyclic voltammetry, potentiostatic method or pulse potentiostatic method, at poly-(2-phenylindone) layer of host material substrates;
(3) electro-deposition of catalyst:
The aqueous solution of 1-5mmol/L precious metal salt is inserted the host material modified using poly-(2-phenylindone) as in the electrochemical reaction appts of work electrode; under the protection of inert gas; utilize potentiostatic method-0.2V; relative to saturated calomel electrode or cyclic voltammetry-0.5-0.2V; relative to saturated calomel electrode; electro-deposition catalyst, controls deposition electricity at 0.25-0.3C/cm 2, obtained poly-(2-phenylindone) supported catalyst electrode.
Catalyst electrode comprises host material and the catalyst layer above it.
Host material can be any one in iron, copper, nickel, material with carbon element.
Catalyst layer above host material is made up of the one, two or three in carrier poly-(2-phenylindone) and noble metal catalyst platinum, rhodium, palladium, gold, silver etc.
Adopt conduction poly-(2-phenylindone) as catalyst carrier, in acidity and alkaline solution, all there is good heat, electrochemistry and chemical stability, high conductivity and adhesive force strong on host material.The catalyst electrode adopting above-mentioned preparation method to obtain can improve the decentralization of catalyst and the durability of electrode, thus improves the utilance of noble metal catalyst.
Embodiment
The present invention is described in detail by instantiation below, but protection scope of the present invention is not limited to these embodiments.
Embodiment one:
0.19g2-Phenylindole is dissolved in the mixed solution of 100mL BFEE and ether, makes the electrochemical solution that molar concentration is 10mmol/L.The electrochemical solution prepared is inserted in electrochemical reaction appts, this device with host material carbon be work electrode, platinum is to electrode, Ag/AgCl for reference electrode, logical nitrogen 20 minutes in solution, in order to remove the dissolved oxygen in solution; Adopt constant potential method, controlling potential is 0.5V (relative to saturated calomel electrode), polymerization electricity is 65mC/cm 2, at poly-(2-phenylindone) layer of carbon matrix material substrates.The carbon matrix material modified with poly-(2-phenylindone), for work electrode, inserts 3mmol/LH 2ptCl 6in the aqueous solution of+0.1mol/LKCl, under nitrogen protection, utilize potentiostatic method (-0.2V, relative to saturated calomel electrode) platinum electrodeposition catalyst, controlling deposition electricity is 0.25C/cm 2, obtained poly-(2-phenylindone) supported catalyst electrode, the load capacity of platinum catalyst is 0.12mg/cm 2.
Embodiment two:
0.58g2-Phenylindole is dissolved in the mixed solution of 100mL BFEE and ether, makes the electrochemical solution that molar concentration is 30mmol/L.The electrochemical solution prepared is inserted in electrochemical reaction appts, this device with copper host material be work electrode, platinum is to electrode, Ag/AgCl for reference electrode, logical nitrogen 20 minutes in solution, in order to remove the dissolved oxygen in solution; Adopt constant potential method, controlling potential is that 1.0V(is relative to saturated calomel electrode), polymerization electricity is 70mC/cm 2, at poly-(2-phenylindone) layer of copper host material substrates.The copper host material modified with poly-(2-phenylindone), for work electrode, inserts 3mmol/LH 2ptCl 6in the aqueous solution of+0.1mol/LKCl, under nitrogen protection, utilize cyclic voltammetry (-0.5-0.2V, relative to saturated calomel electrode) platinum electrodeposition catalyst, controlling deposition electricity is 0.25C/cm 2, obtained poly-(2-phenylindone) supported catalyst electrode, the load capacity of platinum catalyst is 0.12mg/cm 2.
Embodiment three:
0.95g2-Phenylindole is dissolved in the mixed solution of 100mL BFEE and ether, makes the electrochemical solution that molar concentration is 50mmol/L.The electrochemical solution prepared is inserted in electrochemical reaction appts, this device with ferrous substrate material be work electrode, platinum is to electrode, Ag/AgCl for reference electrode, logical nitrogen 20 minutes in solution, in order to remove the dissolved oxygen in solution; Adopt constant potential method, controlling potential is 1.5V (relative to saturated calomel electrode), polymerization electricity is 75mC/cm 2, at poly-(2-phenylindone) layer of ferrous substrate material substrates.The ferrous substrate material modified with poly-(2-phenylindone), for work electrode, inserts 3mmol/LH 2auCl 6in the aqueous solution of+0.1mol/LKCl, under nitrogen protection, utilize potentiostatic method (-0.2V, relative to saturated calomel electrode) deposited Au catalyst, controlling deposition electricity is 0.3C/cm 2, obtained poly-(2-phenylindone) supported catalyst electrode, the load capacity of Au catalyst is 0.15mg/cm 2.

Claims (4)

1. the preparation method of poly-(2-phenylindone) supported catalyst electrode of fuel cell, it is characterized in that, the concrete steps of the method are:
(1) preparation of electrochemical solution:
2-phenylindone is dissolved in the mixed solution of BFEE and ether, makes the electrochemical solution that molar concentration is 10-50mmol/L;
(2) electrochemical polymerization of 2-phenylindone:
The electrochemical solution prepared is inserted in electrochemical reaction appts, this device take host material as work electrode, platinum for being reference electrode to electrode, Ag/AgCl, logical nitrogen 20 minutes removing dissolved oxygens in solution; Controlling potential scope in 0-1.5V (relative to saturated calomel electrode), polymerization electricity scope at 65-75mC/cm 2, adopt cyclic voltammetry, potentiostatic method or pulse potentiostatic method, at poly-(2-phenylindone) layer of host material substrates;
(3) electro-deposition of catalyst:
The aqueous solution of 1-5mmol/L precious metal salt is inserted the host material modified using poly-(2-phenylindone) as in the electrochemical reaction appts of work electrode; under the protection of inert gas; utilize potentiostatic method-0.2V; relative to saturated calomel electrode or cyclic voltammetry-0.5-0.2V; relative to saturated calomel electrode; electro-deposition catalyst, controls deposition electricity at 0.25-0.3C/cm 2, obtained poly-(2-phenylindone) supported catalyst electrode.
2. the preparation method of poly-(2-phenylindone) supported catalyst electrode of a kind of fuel cell according to claim 1, is characterized in that, catalyst electrode comprises host material and the catalyst layer above it.
3. the preparation method of poly-(2-phenylindone) supported catalyst electrode of a kind of fuel cell according to claim 1, is characterized in that, host material can be any one in iron, copper, nickel, material with carbon element.
4. the preparation method of poly-(2-phenylindone) supported catalyst electrode of a kind of fuel cell according to claim 1, it is characterized in that, the catalyst layer above host material is made up of the one, two or three in carrier poly-(2-phenylindone) and noble metal catalyst platinum, rhodium, palladium, gold, silver etc.
CN201510721884.4A 2015-10-30 2015-10-30 Preparation method of poly(2-phenylindole) supported catalyst electrode of fuel cell Pending CN105390705A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110492103A (en) * 2019-08-19 2019-11-22 上海纳米技术及应用国家工程研究中心有限公司 A kind of preparation method of lithium ion battery silicon-carbon cathode binder and products thereof and application

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040132875A1 (en) * 2001-02-16 2004-07-08 Wolfgang Wehner Chlorate-containing stabilizer system with nitrogen-containing synergists for stabilizing halogen-containing polymers
CN1858931A (en) * 2005-05-03 2006-11-08 三星Sdi株式会社 Lithium rechargeable battery
CN101692494A (en) * 2009-10-13 2010-04-07 江西科技师范学院 Poly (5-nitroindole)-supported catalyst electrode of fuel cell and preparation method thereof
CN102604235A (en) * 2012-03-15 2012-07-25 上海瀚氏模具成型有限公司 High-heat-resistance polypropylene material and preparation method thereof
CN103272642A (en) * 2013-05-27 2013-09-04 浙江大学 Preparation method of indole-modified macroporous carbon supported transition metal catalysts

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040132875A1 (en) * 2001-02-16 2004-07-08 Wolfgang Wehner Chlorate-containing stabilizer system with nitrogen-containing synergists for stabilizing halogen-containing polymers
CN1858931A (en) * 2005-05-03 2006-11-08 三星Sdi株式会社 Lithium rechargeable battery
CN101692494A (en) * 2009-10-13 2010-04-07 江西科技师范学院 Poly (5-nitroindole)-supported catalyst electrode of fuel cell and preparation method thereof
CN102604235A (en) * 2012-03-15 2012-07-25 上海瀚氏模具成型有限公司 High-heat-resistance polypropylene material and preparation method thereof
CN103272642A (en) * 2013-05-27 2013-09-04 浙江大学 Preparation method of indole-modified macroporous carbon supported transition metal catalysts

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110492103A (en) * 2019-08-19 2019-11-22 上海纳米技术及应用国家工程研究中心有限公司 A kind of preparation method of lithium ion battery silicon-carbon cathode binder and products thereof and application

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Application publication date: 20160309