CN106169587A - A kind of new fuel cell of high alcohol-rejecting ability and preparation method thereof - Google Patents

A kind of new fuel cell of high alcohol-rejecting ability and preparation method thereof Download PDF

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CN106169587A
CN106169587A CN201610670633.2A CN201610670633A CN106169587A CN 106169587 A CN106169587 A CN 106169587A CN 201610670633 A CN201610670633 A CN 201610670633A CN 106169587 A CN106169587 A CN 106169587A
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halloysite nanotubes
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陈隽
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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00Electrodes
    • H01M4/86Inert electrodes with catalytic activity, e.g. for fuel cells
    • H01M4/90Selection of catalytic material
    • H01M4/92Metals of platinum group
    • H01M4/925Metals of platinum group supported on carriers, e.g. powder carriers
    • H01M4/926Metals of platinum group supported on carriers, e.g. powder carriers on carbon or graphite
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    • B82YSPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
    • B82Y30/00Nanotechnology for materials or surface science, e.g. nanocomposites
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00Electrodes
    • H01M4/86Inert electrodes with catalytic activity, e.g. for fuel cells
    • H01M4/88Processes of manufacture
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00Fuel cells; Manufacture thereof
    • H01M8/10Fuel cells with solid electrolytes
    • H01M8/1016Fuel cells with solid electrolytes characterised by the electrolyte material
    • H01M8/1018Polymeric electrolyte materials
    • H01M8/1067Polymeric electrolyte materials characterised by their physical properties, e.g. porosity, ionic conductivity or thickness
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00Fuel cells; Manufacture thereof
    • H01M8/10Fuel cells with solid electrolytes
    • H01M8/1016Fuel cells with solid electrolytes characterised by the electrolyte material
    • H01M8/1018Polymeric electrolyte materials
    • H01M8/1069Polymeric electrolyte materials characterised by the manufacturing processes
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/30Hydrogen technology
    • Y02E60/50Fuel cells

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  • Fuel Cell (AREA)

Abstract

The invention discloses the new fuel cell of a kind of high alcohol-rejecting ability, including anode diffusion layer, anode micro porous layer, anode catalyst layer, PEM, cathode catalysis layer, cathode micro porous layer, cathode gas diffusion layer, doped with modified halloysite nanotubes in described PEM, described modified halloysite nanotubes first carries out Surface coating process with dopamine hydrochloride to halloysite nanotubes, then introduce active halogen atom, then by ATRP reaction, the monomer glycerol polymerization with sulfonic acid group is prepared on halloysite nanotubes;Catalyst in described cathode catalysis layer is that with CNT as carrier, the carrying capacity of active component is 0.5 3.5mg/cm with palladium and platinum as active component2, the mass ratio of palladium and platinum is (1 2): 1.The invention also discloses the preparation method of this new fuel cell.Fuel cell disclosed by the invention has the utilization rate that can be effectively improved fuel, the good stability of fuel cell.

Description

A kind of new fuel cell of high alcohol-rejecting ability and preparation method thereof
Technical field:
The present invention relates to fuel cell field, be specifically related to the new fuel cell of a kind of high alcohol-rejecting ability.
Background technology:
Fuel cell is a kind of by electrode reaction, the chemical energy between hydrogen fuel and oxidant to be directly translated into electric energy Device.It exteriorly has both positive and negative polarity and electrolyte etc., as an accumulator, but substantially it can not " storage electricity " but one Individual " power plant ", being described as is a kind of forth generation generation technology after waterpower, firepower, nuclear power, the most the prosperity such as U.S., day Country emerges, and enters at a quick pace, with the impetus roused oneself to catch up, the ranks that can generate electricity on an industrial scale.Fuel cell has high-energy and turns Change efficiency, started quickly at low temperature, low heat-emissive and low emission, running noises is low and adapts to different capacity requirement, and it is the best to have Prospect.
In these fuel cells, Proton Exchange Membrane Fuel Cells (proton exchange membrane fuel Cell, PEMFC) operating temperature is minimum, is also the maximum one of current development scale.The authority in fuel cell field The statistics of statistical organization Fuel Cell Today, 2,005 2010 years, be singly Miniature Power Unit field, and the whole world has had more than 150000 set fuel cells are delivered for use, and general power has exceeded 15MW, and wherein 96% is Proton Exchange Membrane Fuel Cells.Lead in traffic In territory, Proton Exchange Membrane Fuel Cells receives significant attention, the whole world because promising to be most the electromotor of following electric automobile Main automobile production commercial city is being devoted to the exploitation of fuel cell car.The extensive business of Proton Exchange Membrane Fuel Cells Industry is also faced with cost and life-span two large problems, and active development new material is the only way which must be passed solving this two large problems, is also mesh The focus of front Proton Exchange Membrane Fuel Cells research.PEM is the core component of proton exchange fuel cell, and it is in combustion Effect played in material battery is dual: provide hydrion passage as electrolyte, isolates polarization response gas as barrier film. PEM is the key problem in technology of fuel cell, and the quality of its performance directly affects the service behaviour of fuel cell, cost And application prospect, but the most conventional PEM is perfluorosulfonic acid proton exchange film, its chemical stability is good, proton electricity Conductance is big, but its ionic conductance is strongly dependent on water content, when water content is relatively low or temperature is higher, under electrical conductivity is obvious Fall.
Summary of the invention:
It is an object of the invention to provide the new fuel cell of a kind of high alcohol-rejecting ability, its fuel availability is high, economic ring Protect, good stability.
It is a further object to provide the preparation method of this new fuel cell.
For achieving the above object, the present invention is by the following technical solutions:
The new fuel cell of a kind of high alcohol-rejecting ability, including anode diffusion layer, anode micro porous layer, anode catalyst layer, matter Proton exchange, cathode catalysis layer, cathode micro porous layer, cathode gas diffusion layer, doped with modified angstrom Lip river in described PEM Stone nanotube, described modified halloysite nanotubes first carries out Surface coating process with dopamine hydrochloride to halloysite nanotubes, Then introduce active halogen atom, then reacted the monomer glycerol polymerization with sulfonic acid group to halloysite nanotubes by ATRP Upper prepared;Catalyst in described cathode catalysis layer is with palladium and platinum as active component, with CNT as carrier, and active component Carrying capacity be 0.5-3.5mg/cm2, the mass ratio of palladium and platinum is (1-2): 1.
Preferred as technique scheme, the described monomer with sulfonic acid group is Sodium styrene sulfonate, 2-acryloyl One in amine-2-methyl propane sulfonic acid sodium.
Preferred as technique scheme, the preparation method of described modified halloysite nanotubes is:
A) in Tris-hydrochloride buffer, add halloysite nanotubes, dopamine hydrochloride mixing, super under 500-1000W Sound 30-50min, then magnetic agitation reaction 10-24h, cleans, and is dried to obtain the galapectite nanometer that dopamine hydrochloride is modified Pipe;
B) add under the protection of noble gas the modified halloysite nanotubes of oxolane, triethylamine, dopamine and α- Brominated esters, stirring mixing 5-20h, obtain the halloysite nanotubes that active bromine is modified after cleaning-drying;
C) under inert gas shielding, by N-N-dimethylformamide, the monomer with sulfonic acid group, the sub-second of pentamethyl two The halloysite nanotubes mix and blend 10-of the active bromine modification that base triamine, cuprous bromide, deionized water and step b) are prepared 80h, obtains described modified halloysite nanotubes after cleaning-drying.
Preferred as technique scheme, in step a), dopamine hydrochloride concentration in reaction system is 10- 20mmg/L。
Preferred as technique scheme, in step c), the described monomer with sulfonic acid group, cuprous bromide, five first The mol ratio of base diethylenetriamines is (30-50): (3-6): (1-3).
Preferred as technique scheme, in step b), the galapectite that described alpha-brominated ester is modified relative to dopamine The addition of nanotube D-HNTs is 15-30mmol/ (gD-HNTs).
Preferred as technique scheme, in step b), described oxolane is (10-with the volume ratio of triethylamine 30): 1.
The preparation method of the new fuel cell of a kind of high obstructing performance, comprises the following steps:
(1) anode diffusion layer and cathode diffusion layer carrying out hydrophobicity process, anode diffusion layer and cathode diffusion layer use Carbon paper;
(2) on anode diffusion layer, prepare anode micro porous layer, cathode diffusion layer is prepared cathode micro porous layer;
(3) anode catalyst layer and cathode catalysis layer are prepared;
(4) prepare compound proton exchange membrane: by dispersed for modification halloysite nanotubes prepare in deionized water homogeneous Dispersion liquid;Then sulfonated polyether-ether-ketone is dissolved in N-N-dimethyl acetylamide formation solution, by dispersion liquid and molten under room temperature Liquid mix homogeneously, pours into a mould film forming, is then dried by film, then soaks 20-30h in dilute sulfuric acid, washes unnecessary sulfur with water Acid, prepares compound proton exchange membrane.
Preferred as technique scheme, in step (4), the drying condition of described film is: first dry at 60-100 DEG C Dry 20-30h, is then vacuum dried 10-15h at 80-100 DEG C.
Preferred as technique scheme, in step (4), the concentration of described dilute sulfuric acid is 1-1.5mol/L.
The method have the advantages that
The present invention uses with palladium and platinum the catalyst as active component, and the content both conservative control so that negative electrode is urged Agent has good electro-catalysis reducing activity and stability so that prepared new fuel cell excellent performance;
The present invention adulterates appropriate modified halloysite nanotubes in PEM, by connecing on halloysite nanotubes Branch polymerization introduces sulfonic acid group with the monomer of sulfonic acid group, and prepared PEM has higher proton conductivity, and And good mechanical property;And it is effectively increased the utilization ratio of fuel, economic and environment-friendly.
Detailed description of the invention:
In order to be better understood from the present invention, below by embodiment, the present invention is further described, and embodiment is served only for solving Release the present invention, the present invention will not be constituted any restriction.
Embodiment 1
The new fuel cell of a kind of high alcohol-rejecting ability, including anode diffusion layer, anode micro porous layer, anode catalyst layer, matter Proton exchange, cathode catalysis layer, cathode micro porous layer, cathode gas diffusion layer, doped with modified angstrom Lip river in described PEM Stone nanotube, described modified halloysite nanotubes first carries out Surface coating process with dopamine hydrochloride to halloysite nanotubes, Then introduce active halogen atom, then reacted the monomer glycerol polymerization with sulfonic acid group to halloysite nanotubes by ATRP Upper prepared;Catalyst in described cathode catalysis layer is with palladium and platinum as active component, with CNT as carrier, and active component Carrying capacity be 0.5mg/cm2, the mass ratio of palladium and platinum is 1:1.
Its preparation method comprises the following steps:
(1) anode diffusion layer and cathode diffusion layer carrying out hydrophobicity process, anode diffusion layer and cathode diffusion layer use Carbon paper;
(2) on anode diffusion layer, prepare anode micro porous layer, cathode diffusion layer is prepared cathode micro porous layer;
(3) anode catalyst layer and cathode catalysis layer are prepared;
(4) compound proton exchange membrane is prepared:
A) in Tris-hydrochloride buffer, add halloysite nanotubes, dopamine hydrochloride mixing, ultrasonic under 500W 50min, then magnetic agitation reaction 10h, cleans, and is dried to obtain the halloysite nanotubes that dopamine hydrochloride is modified, wherein, many Bar amine hydrochlorate concentration in reaction system is 10mmg/L;
B) add under the protection of noble gas the modified halloysite nanotubes of oxolane, triethylamine, dopamine and α- Brominated esters, stirring mixing 5h, obtain the halloysite nanotubes that active bromine is modified, wherein, alpha-brominated ester phase after cleaning-drying Addition for the halloysite nanotubes D-HNTs of dopamine modification is 15mmol/ (gD-HNTs);Oxolane and triethylamine Volume ratio be 10:1;
C) under inert gas shielding, by N-N-dimethylformamide, the monomer with sulfonic acid group, the sub-second of pentamethyl two The halloysite nanotubes mix and blend of the active bromine modification that base triamine, cuprous bromide, deionized water and step b) are prepared 10h, obtains described modified halloysite nanotubes after cleaning-drying, wherein, with the monomer of sulfonic acid group, cuprous bromide, five first The mol ratio of base diethylenetriamines is 30:3:1;
D) homogeneous dispersion liquid is prepared in deionized water by dispersed for above-mentioned prepared modified halloysite nanotubes;So After sulfonated polyether-ether-ketone is dissolved in N-N-dimethyl acetylamide formation solution, by dispersion liquid and solution mix homogeneously under room temperature, Cast film forming, is then first dried film 30h at 60 DEG C, is then vacuum dried 15h at 80 DEG C, then at dilute sulfur of 1mol/L Acid is soaked 20h, washes unnecessary sulphuric acid with water, prepare compound proton exchange membrane.
Embodiment 2
The new fuel cell of a kind of high alcohol-rejecting ability, including anode diffusion layer, anode micro porous layer, anode catalyst layer, matter Proton exchange, cathode catalysis layer, cathode micro porous layer, cathode gas diffusion layer, doped with modified angstrom Lip river in described PEM Stone nanotube, described modified halloysite nanotubes first carries out Surface coating process with dopamine hydrochloride to halloysite nanotubes, Then introduce active halogen atom, then reacted the monomer glycerol polymerization with sulfonic acid group to halloysite nanotubes by ATRP Upper prepared;Catalyst in described cathode catalysis layer is with palladium and platinum as active component, with CNT as carrier, and active component Carrying capacity be 3.5mg/cm2, the mass ratio of palladium and platinum is 2:1.
Its preparation method comprises the following steps:
(1) anode diffusion layer and cathode diffusion layer carrying out hydrophobicity process, anode diffusion layer and cathode diffusion layer use Carbon paper;
(2) on anode diffusion layer, prepare anode micro porous layer, cathode diffusion layer is prepared cathode micro porous layer;
(3) anode catalyst layer and cathode catalysis layer are prepared;
(4) compound proton exchange membrane is prepared:
A) in Tris-hydrochloride buffer, add halloysite nanotubes, dopamine hydrochloride mixing, ultrasonic under 1000W 30min, then magnetic agitation reaction 24h, cleans, and is dried to obtain the halloysite nanotubes that dopamine hydrochloride is modified, wherein, many Bar amine hydrochlorate concentration in reaction system is 20mmg/L;
B) add under the protection of noble gas the modified halloysite nanotubes of oxolane, triethylamine, dopamine and α- Brominated esters, stirring mixing 20h, obtain the halloysite nanotubes that active bromine is modified, wherein, alpha-brominated ester phase after cleaning-drying Addition for the halloysite nanotubes D-HNTs of dopamine modification is 30mmol/ (gD-HNTs);Oxolane and triethylamine Volume ratio be 30:1;
C) under inert gas shielding, by N-N-dimethylformamide, the monomer with sulfonic acid group, the sub-second of pentamethyl two The halloysite nanotubes mix and blend of the active bromine modification that base triamine, cuprous bromide, deionized water and step b) are prepared 80h, obtains described modified halloysite nanotubes after cleaning-drying, wherein, with the monomer of sulfonic acid group, cuprous bromide, five first The mol ratio of base diethylenetriamines is 50:6:3;
D) homogeneous dispersion liquid is prepared in deionized water by dispersed for above-mentioned prepared modified halloysite nanotubes;So After sulfonated polyether-ether-ketone is dissolved in N-N-dimethyl acetylamide formation solution, by dispersion liquid and solution mix homogeneously under room temperature, Cast film forming, is then first dried film 20h at 100 DEG C, is then vacuum dried 10h at 100 DEG C, then 1.5mol/L's Dilute sulfuric acid soaks 30h, washes unnecessary sulphuric acid with water, prepare compound proton exchange membrane.
Embodiment 3
The new fuel cell of a kind of high alcohol-rejecting ability, including anode diffusion layer, anode micro porous layer, anode catalyst layer, matter Proton exchange, cathode catalysis layer, cathode micro porous layer, cathode gas diffusion layer, doped with modified angstrom Lip river in described PEM Stone nanotube, described modified halloysite nanotubes first carries out Surface coating process with dopamine hydrochloride to halloysite nanotubes, Then introduce active halogen atom, then reacted the monomer glycerol polymerization with sulfonic acid group to halloysite nanotubes by ATRP Upper prepared;Catalyst in described cathode catalysis layer is with palladium and platinum as active component, with CNT as carrier, and active component Carrying capacity be 1.5mg/cm2, the mass ratio of palladium and platinum is 1.2:1.
Its preparation method comprises the following steps:
(1) anode diffusion layer and cathode diffusion layer carrying out hydrophobicity process, anode diffusion layer and cathode diffusion layer use Carbon paper;
(2) on anode diffusion layer, prepare anode micro porous layer, cathode diffusion layer is prepared cathode micro porous layer;
(3) anode catalyst layer and cathode catalysis layer are prepared;
(4) compound proton exchange membrane is prepared:
A) in Tris-hydrochloride buffer, add halloysite nanotubes, dopamine hydrochloride mixing, ultrasonic under 600W 45min, then magnetic agitation reaction 14h, cleans, and is dried to obtain the halloysite nanotubes that dopamine hydrochloride is modified, wherein, many Bar amine hydrochlorate concentration in reaction system is 12mmg/L;
B) add under the protection of noble gas the modified halloysite nanotubes of oxolane, triethylamine, dopamine and α- Brominated esters, stirring mixing 9h, obtain the halloysite nanotubes that active bromine is modified, wherein, alpha-brominated ester phase after cleaning-drying Addition for the halloysite nanotubes D-HNTs of dopamine modification is 19mmol/ (gD-HNTs);Oxolane and triethylamine Volume ratio be 15:1;
C) under inert gas shielding, by N-N-dimethylformamide, the monomer with sulfonic acid group, the sub-second of pentamethyl two The halloysite nanotubes mix and blend of the active bromine modification that base triamine, cuprous bromide, deionized water and step b) are prepared 20h, obtains described modified halloysite nanotubes after cleaning-drying, wherein, with the monomer of sulfonic acid group, cuprous bromide, five first The mol ratio of base diethylenetriamines is 35:4:1.5;
D) homogeneous dispersion liquid is prepared in deionized water by dispersed for above-mentioned prepared modified halloysite nanotubes;So After sulfonated polyether-ether-ketone is dissolved in N-N-dimethyl acetylamide formation solution, by dispersion liquid and solution mix homogeneously under room temperature, Cast film forming, is then first dried 22h at 70 DEG C by film, is then vacuum dried 11h at 85 DEG C, then dilute at 1.1mol/L Sulphuric acid soaks 22h, washes unnecessary sulphuric acid with water, prepare compound proton exchange membrane.
Embodiment 4
The new fuel cell of a kind of high alcohol-rejecting ability, including anode diffusion layer, anode micro porous layer, anode catalyst layer, matter Proton exchange, cathode catalysis layer, cathode micro porous layer, cathode gas diffusion layer, doped with modified angstrom Lip river in described PEM Stone nanotube, described modified halloysite nanotubes first carries out Surface coating process with dopamine hydrochloride to halloysite nanotubes, Then introduce active halogen atom, then reacted the monomer glycerol polymerization with sulfonic acid group to halloysite nanotubes by ATRP Upper prepared;Catalyst in described cathode catalysis layer is with palladium and platinum as active component, with CNT as carrier, and active component Carrying capacity be 2.5mg/cm2, the mass ratio of palladium and platinum is 1.4:1.
Its preparation method comprises the following steps:
(1) anode diffusion layer and cathode diffusion layer carrying out hydrophobicity process, anode diffusion layer and cathode diffusion layer use Carbon paper;
(2) on anode diffusion layer, prepare anode micro porous layer, cathode diffusion layer is prepared cathode micro porous layer;
(3) anode catalyst layer and cathode catalysis layer are prepared;
(4) compound proton exchange membrane is prepared:
A) in Tris-hydrochloride buffer, add halloysite nanotubes, dopamine hydrochloride mixing, ultrasonic under 700W 40min, then magnetic agitation reaction 18h, cleans, and is dried to obtain the halloysite nanotubes that dopamine hydrochloride is modified, wherein, many Bar amine hydrochlorate concentration in reaction system is 14mmg/L;
B) add under the protection of noble gas the modified halloysite nanotubes of oxolane, triethylamine, dopamine and α- Brominated esters, stirring mixing 13h, obtain the halloysite nanotubes that active bromine is modified, wherein, alpha-brominated ester phase after cleaning-drying Addition for the halloysite nanotubes D-HNTs of dopamine modification is 23mmol/ (gD-HNTs);Oxolane and triethylamine Volume ratio be 20:1;
C) under inert gas shielding, by N-N-dimethylformamide, the monomer with sulfonic acid group, the sub-second of pentamethyl two The halloysite nanotubes mix and blend of the active bromine modification that base triamine, cuprous bromide, deionized water and step b) are prepared 40h, obtains described modified halloysite nanotubes after cleaning-drying, wherein, with the monomer of sulfonic acid group, cuprous bromide, five first The mol ratio of base diethylenetriamines is 40:5:2;
D) homogeneous dispersion liquid is prepared in deionized water by dispersed for above-mentioned prepared modified halloysite nanotubes;So After sulfonated polyether-ether-ketone is dissolved in N-N-dimethyl acetylamide formation solution, by dispersion liquid and solution mix homogeneously under room temperature, Cast film forming, is then first dried 24h at 80 DEG C by film, is then vacuum dried 12h at 90 DEG C, then dilute at 1.2mol/L Sulphuric acid soaks 24h, washes unnecessary sulphuric acid with water, prepare compound proton exchange membrane.
Embodiment 5
The new fuel cell of a kind of high alcohol-rejecting ability, including anode diffusion layer, anode micro porous layer, anode catalyst layer, matter Proton exchange, cathode catalysis layer, cathode micro porous layer, cathode gas diffusion layer, doped with modified angstrom Lip river in described PEM Stone nanotube, described modified halloysite nanotubes first carries out Surface coating process with dopamine hydrochloride to halloysite nanotubes, Then introduce active halogen atom, then reacted the monomer glycerol polymerization with sulfonic acid group to halloysite nanotubes by ATRP Upper prepared;Catalyst in described cathode catalysis layer is with palladium and platinum as active component, with CNT as carrier, and active component Carrying capacity be 3.0mg/cm2, the mass ratio of palladium and platinum is 1.6:1.
Its preparation method comprises the following steps:
(1) anode diffusion layer and cathode diffusion layer carrying out hydrophobicity process, anode diffusion layer and cathode diffusion layer use Carbon paper;
(2) on anode diffusion layer, prepare anode micro porous layer, cathode diffusion layer is prepared cathode micro porous layer;
(3) anode catalyst layer and cathode catalysis layer are prepared;
(4) compound proton exchange membrane is prepared:
A) in Tris-hydrochloride buffer, add halloysite nanotubes, dopamine hydrochloride mixing, ultrasonic under 800W 35min, then magnetic agitation reaction 22h, cleans, and is dried to obtain the halloysite nanotubes that dopamine hydrochloride is modified, wherein, many Bar amine hydrochlorate concentration in reaction system is 18mmg/L;
B) add under the protection of noble gas the modified halloysite nanotubes of oxolane, triethylamine, dopamine and α- Brominated esters, stirring mixing 18h, obtain the halloysite nanotubes that active bromine is modified, wherein, alpha-brominated ester phase after cleaning-drying Addition for the halloysite nanotubes D-HNTs of dopamine modification is 26mmol/ (gD-HNTs);Oxolane and triethylamine Volume ratio be 25:1;
C) under inert gas shielding, by N-N-dimethylformamide, the monomer with sulfonic acid group, the sub-second of pentamethyl two The halloysite nanotubes mix and blend of the active bromine modification that base triamine, cuprous bromide, deionized water and step b) are prepared 60h, obtains described modified halloysite nanotubes after cleaning-drying, wherein, with the monomer of sulfonic acid group, cuprous bromide, five first The mol ratio of base diethylenetriamines is 45:5.5:2.5;
D) homogeneous dispersion liquid is prepared in deionized water by dispersed for above-mentioned prepared modified halloysite nanotubes;So After sulfonated polyether-ether-ketone is dissolved in N-N-dimethyl acetylamide formation solution, by dispersion liquid and solution mix homogeneously under room temperature, Cast film forming, is then first dried 26h at 90 DEG C by film, is then vacuum dried 14h at 95 DEG C, then dilute at 1.3mol/L Sulphuric acid soaks 28h, washes unnecessary sulphuric acid with water, prepare compound proton exchange membrane.

Claims (10)

1. a new fuel cell for high alcohol-rejecting ability, including anode diffusion layer, anode micro porous layer, anode catalyst layer, proton Exchange membrane, cathode catalysis layer, cathode micro porous layer, cathode gas diffusion layer, it is characterised in that in described PEM doped with Modified halloysite nanotubes, described modified halloysite nanotubes first carries out surface bag with dopamine hydrochloride to halloysite nanotubes Cover process, then introduce active halogen atom, then reacted the monomer glycerol polymerization with sulfonic acid group to an angstrom Lip river by ATRP Prepare on stone nanotube;Catalyst in described cathode catalysis layer is with palladium and platinum as active component, with CNT as carrier, The carrying capacity of active component is 0.5-3.5mg/cm2, the mass ratio of palladium and platinum is (1-2): 1.
The new fuel cell of a kind of high obstructing performance the most as claimed in claim 1, it is characterised in that: described with sulfonic group The monomer of group is the one in Sodium styrene sulfonate, 2-acrylamide-2-methyl propane sulfonic sodium.
The new fuel cell of a kind of high obstructing performance the most as claimed in claim 1, it is characterised in that described modified galapectite The preparation method of nanotube is:
A) in Tris-hydrochloride buffer, add halloysite nanotubes, dopamine hydrochloride mixing, ultrasonic 30-under 500-1000W 50min, then magnetic agitation reaction 10-24h, cleans, and is dried to obtain the halloysite nanotubes that dopamine hydrochloride is modified;
B) under the protection of noble gas, add the modified halloysite nanotubes of oxolane, triethylamine, dopamine and alpha-brominated Ester, stirring mixing 5-20h, obtain the halloysite nanotubes that active bromine is modified after cleaning-drying;
C) under inert gas shielding, by N-N-dimethylformamide, the monomer with sulfonic acid group, pentamethyl diethylidene three The halloysite nanotubes mix and blend 10-80h of the active bromine modification that amine, cuprous bromide, deionized water and step b) are prepared, Described modified halloysite nanotubes is obtained after cleaning-drying.
The new fuel cell of a kind of high obstructing performance the most as claimed in claim 3, it is characterised in that: in step a), DOPA Amine hydrochlorate concentration in reaction system is 10-20mmg/L.
The new fuel cell of a kind of high obstructing performance the most as claimed in claim 3, it is characterised in that: in step c), described It is (30-50) with the monomer of sulfonic acid group, cuprous bromide, the mol ratio of five methyl diethylentriamine: (3-6): (1-3).
The new fuel cell of a kind of high obstructing performance the most as claimed in claim 3, it is characterised in that: in step b), described The addition of the halloysite nanotubes D-HNTs that alpha-brominated ester is modified relative to dopamine is 15-30mmol/ (gD-HNTs).
The new fuel cell of a kind of high obstructing performance the most as claimed in claim 3, it is characterised in that: in step b), described Oxolane is (10-30) with the volume ratio of triethylamine: 1.
8. the preparation method of the new fuel cell of a kind of high obstructing performance as described in claim 1 to 7 is arbitrary, its feature exists In, comprise the following steps:
(1) anode diffusion layer and cathode diffusion layer carrying out hydrophobicity process, anode diffusion layer and cathode diffusion layer use carbon paper;
(2) on anode diffusion layer, prepare anode micro porous layer, cathode diffusion layer is prepared cathode micro porous layer;
(3) anode catalyst layer and cathode catalysis layer are prepared;
(4) compound proton exchange membrane is prepared: prepare homogeneous dividing in deionized water by dispersed for modified halloysite nanotubes Dissipate liquid;Then sulfonated polyether-ether-ketone is dissolved in N-N-dimethyl acetylamide formation solution, under room temperature, dispersion liquid and solution is mixed Close uniformly, pour into a mould film forming, then film is dried, in dilute sulfuric acid, then soak 20-30h, wash unnecessary sulphuric acid with water, system Obtain compound proton exchange membrane.
The preparation method of the new fuel cell of a kind of high alcohol-rejecting ability the most as claimed in claim 8, it is characterised in that: step (4) in, the drying condition of described film is: is first dried 20-30h at 60-100 DEG C, is then vacuum dried 10-at 80-100 DEG C 15h。
The preparation method of the new fuel cell of a kind of high alcohol-rejecting ability the most as claimed in claim 8, it is characterised in that: step Suddenly, in (4), the concentration of described dilute sulfuric acid is 1-1.5mol/L.
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