CN110061247A - A method of promoting fuel battery service life - Google Patents

A method of promoting fuel battery service life Download PDF

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Publication number
CN110061247A
CN110061247A CN201910349314.5A CN201910349314A CN110061247A CN 110061247 A CN110061247 A CN 110061247A CN 201910349314 A CN201910349314 A CN 201910349314A CN 110061247 A CN110061247 A CN 110061247A
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reaction chamber
coating layer
service life
nitrogen
toner body
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CN110061247B (en
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解明
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Soft Power (wuhan) Technology Co Ltd
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Soft Power (wuhan) Technology 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
    • H01M4/8647—Inert electrodes with catalytic activity, e.g. for fuel cells consisting of more than one material, e.g. consisting of composites
    • H01M4/8657—Inert electrodes with catalytic activity, e.g. for fuel cells consisting of more than one material, e.g. consisting of composites layered
    • 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
    • H01M4/8803—Supports for the deposition of the catalytic active composition
    • 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
    • H01M4/9041—Metals or alloys
    • 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
    • H01M4/9075—Catalytic material supported on carriers, e.g. powder carriers
    • H01M4/9083—Catalytic material supported on carriers, e.g. powder carriers on carbon or graphite
    • 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)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Composite Materials (AREA)
  • Fuel Cell (AREA)
  • Inert Electrodes (AREA)

Abstract

The present invention relates to a kind of methods for promoting fuel battery service life, platinum-carrying carbon material as fuel-cell catalyst raw material is handled, processing method includes: to have the toner body of Pt to be put into porous container load, and porous container is placed in reaction chamber, is vacuumized to reaction chamber and is replaced nitrogen；Toner body is dispersed by the method for fluidisation or rotating porous container；Inorganic coating layer is formed on toner body surface using atomic layer deposition method；Using molecular-layer deposition method, the surface of inorganic coating layer forms organic clad on the outside of toner body.In the present invention, ALD method and MLD method energy automatic selectivity cladding effective over the fault location that carbon dust surface is oxidized easily, but do not coat the surface Pt, do not influence the catalytic performance of catalyst while preventing catalytic erosion, promote the service life of fuel cell significantly.Organic coating layer can preferably protect the ALD inorganic coating layer and carbon dust of inside in the environment of acid and high temperature and humidity, further increase the anti-corrosion capability of catalyst.

Description

A method of promoting fuel battery service life
Technical field
The invention belongs to field of fuel cell technology, and in particular to a method of promote fuel battery service life.
Background technique
Proton Exchange Membrane Fuel Cells (PEMFC) is converted into electric energy as a kind of chemical energy by hydrogen and oxygen Electrochemical energy conversion equipment, energy conversion efficiency is high, environmentally friendly, hardly discharge nitrogen oxides, oxysulfide With pernicious gases or the greenhouse gases such as carbon dioxide, it is considered to be following preferred one of the clean and efficient generation technology.
PEMFC cathodic oxygen reduction catalyst is mainly business Pt/C catalyst at present.But in the practical fortune of fuel cell During row, the extreme environments such as height humidification, low pH value and high potential will lead to the carbon support material in catalyst and electrochemistry occur Corrosion is likely to result in urging when more serious so that the Pt nano particle for further resulting in its load occurs migration, is lost and reunites Change layer structure to collapse.Therefore, the carbon support material of higher stability can be kept directly to determine in harsh working environment Service life of fuel cell oxygen reduction catalyst.
Carbon support material in catalyst is not only that Pt particle provides the transmission channel of electronics and oxygen, additionally it is possible to urging Agent active site generates apparent booster action.In catalytic reaction process, chemical composition, electronic configuration, the three-dimensional of carbon carrier Pattern, specific surface area, porosity, microstructure, conductivity and degree of graphitization etc. can all directly affect reactant and activity The interaction of point, so that the whole catalytic activity to catalyst generates strong influence.Therefore, as fuel-cell catalyst Carrier material, carbon carrier has to meet following two condition: (1) excellent electric conductivity: electronics can occur on catalyst and turn Shifting and a series of electrochemical reaction need channel and the ability of transfer electronics；(2) excellent physics and chemical stabilization Property: in PEMFC actual working environment, carbon carrier easily occurs electrochemical corrosion and leads to reunion and the stream of active component Pt It loses, so to select can be in the carbon carrier of harsh working environment holding stability.
Currently, Vulcan XC-72 carbon black materials are due to its preferable electric conductivity and suitable pore structure, it is most commonly seen Pt base catalyst carbon support material；But Vulcan XC-72 has low degree of graphitization, large specific surface area, surface defect more The disadvantages of.Since working environment is very harsh (highly acid, high potential, high humility and high-temperature etc.) in PEMFC, catalyst carrier Easily corrode so that Pt from carrier surface fall off or Pt and carrier between reaction force attenuation, lead to catalyst decay.At present most Common catalyst carrier is Vulcan XC72 carbon black, however thermodynamically, when potential is higher than 0.207V (vs.NHE), Carbon black can be electrochemically oxidized, and generate oxide on surface until CO2.In battery open circuit operation, cathode potential is higher than 0.9V；? In start battery/docking process, cathode localized interface potential possibly even reaches nearly 1.6V, this just adds carbon corrosion reaction Speed.In order to improve the resistance to corrosion of carbon carrier, patent CN108682874A is to carry out graphitization processing to its surface.Currently, Prepare graphitized carbon method mainly by high-temperature process amorphous carbon, thus by agraphitic carbon through phase change transition be three-dimensional graphite Change structure and obtains；It is all SP2 hydridization between the carbon atom on the graphitized carbon surface prepared by this method, it is with higher Electric conductivity, preferable chemical stability and corrosion resistance；But pass through only micro- inside high temperature graphitization treated carbon material Weak Van der Waals force, while the hetero atom of activated carbon surface is removed during high-temperature calcination, therefore obtained graphitization Carbon has certain chemical inertness, and so as to cause the binding force very little of Pt particle and carbon carrier, the Pt particle being attached to above holds Migration easily occurs and reunites.
Summary of the invention
The present embodiments relate to a kind of method for promoting fuel battery service life, the part that can at least solve the prior art is lacked It falls into.
The present embodiments relate to a kind of methods for promoting fuel battery service life, to as fuel-cell catalyst raw material Platinum-carrying carbon material is handled, and processing method includes:
Load is had the toner body of Pt to be put into porous container by S1, and porous container is placed in reaction chamber, is taken out to reaction chamber true Sky simultaneously replaces nitrogen；Toner body is dispersed by the method for fluidisation or rotating porous container；
S2 forms inorganic coating layer on toner body surface using atomic layer deposition method；
S3, using molecular-layer deposition method, the surface of inorganic coating layer forms organic clad on the outside of toner body.
As one of embodiment, in S2, the inorganic coating layer is metal oxide, metal phosphate, metal fluoride Or any one in metal sulfide.
As one of embodiment, step S2 is specifically included:
S201, the type of the inorganic coating layer deposited as needed select the presoma of reaction, and setting depositing operation is joined Number: depositing temperature is 100~300 DEG C, and deposition pressure is 0.01~100torr；
Precursor A steam is introduced into reaction chamber by S202 in the case where nitrogen or argon gas carry, and the retention time is 10~120 Second；
S203 purges reaction chamber with nitrogen or argon gas, and precursor B steam is introduced into reaction in the case where nitrogen or argon gas carry In room, the retention time is 10~120 seconds；
S204 purges reaction chamber with nitrogen or argon gas；
S205, repetitive process S202~S204, until depositing to required inorganic coating thickness degree on toner body surface.
As one of embodiment, the precursor A is metal halide or metal organic complex；The precursor B is Water, oxygen, ozone, hydrogen peroxide, hydrogen sulfide, fluorine gas, hydrofluoric acid, any one in trimethyl phosphate.
As one of embodiment, the inorganic coating layer with a thickness of 0.1~5nm.
As one of embodiment, institute step S3 is specifically included:
S301 deposits the type of organic clad as needed, selects the first presoma of reaction, and setting depositing operation is joined Number: depositing temperature is 100~300 DEG C, and deposition pressure is 0.01~100torr；
First precursor vapor is introduced into reaction chamber, the first precursor vapor by S302 in the case where nitrogen or argon gas carry It is chemisorbed on toner body, the retention time is 10~120 seconds；
S303 purges reaction chamber with nitrogen or argon gas, and the second presoma is introduced into reaction in the case where nitrogen or argon gas carry In room, the second presoma and first forerunner's precursor reactant obtain organic coating layer, and the reaction time is 10~120 seconds；
S304 purges reaction chamber with nitrogen or argon gas；
S305, repetitive process S302~S304, until depositing to required organic coating thickness degree on toner body surface.
As one of embodiment, first presoma is paraphenylene diisocyanate, pyromellitic acid anhydride, different to benzene two Any one in cyanate, trimethyl aluminium, second presoma are 1,6- hexamethylene diamine, ethylenediamine, 1, the 10- diamino last of the ten Heavenly stems Alkane, 1,4- dihydroxy -2- butine, ethylene glycol, any one in glycerine.
As one of embodiment, the organic coating layer with a thickness of 0.1~10nm.
The embodiment of the present invention at least has the following beneficial effects:
The method provided by the invention for promoting fuel battery service life, using atomic layer deposition method (ALD) and molecular-layer deposition Method (MLD) successively forms inorganic coating layer on toner body surface and organic coating layer, ALD method and MLD method are capable of forming automatic choosing Selecting property cladding, that is, automatically select and deposited at defective or functional group carbon dust, and in the surface Pt and no functional group Carbon blacksurface not will form cladding, this is because ALD method and MLD method need surface functional group that could grow, intact has The graphite surface of sp2 key and platinum surface are not suitable for the growth of oxide；And the fault location of porous carbon is precisely that toner body is perishable The place of erosion, thus, the above method can be held by forming inorganic coating layer and organic coating layer effective over carbon dust surface The fault location being easily oxidized, but the surface Pt is not coated, do not influence the catalytic performance of catalyst while preventing catalytic erosion, The electric conductivity for keeping the uncoated place of carbon black, promotes the service life of fuel cell significantly.
Organic clad is coated again outside inorganic coating layer by molecular-layer deposition method, and the organic polymer of formation is in acidity With ALD inorganic coating layer and the carbon dust on the inside of it can be preferably protected in the environment of high temperature and humidity, further increase catalyst Anti-corrosion capability；The substrate that ALD inorganic coating layer is grown as MLD, provide MLD growth needed for-OH so that MLD with compared with Circle number can form the pin-free cladding of even compact less.
Specific embodiment
The following is a clear and complete description of the technical scheme in the embodiments of the invention, it is clear that described embodiment Only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, the common skill in this field Art personnel all other embodiment obtained without making creative work belongs to the model that the present invention protects It encloses.
Embodiment one
The embodiment of the present invention provides a kind of method for promoting fuel battery service life, to as fuel-cell catalyst raw material Platinum-carrying carbon material is handled, which is Pt/C catalyst, using porous carbon as carrier material, with the Pt of load For catalytic active component.
Specifically, above-mentioned processing method includes:
Load is had the toner body of Pt to be put into porous container by S1, and porous container is placed in reaction chamber, is taken out to reaction chamber true Sky simultaneously replaces nitrogen；Toner body is dispersed by the method for fluidisation or rotating porous container；
S2 forms inorganic coating layer on toner body surface using atomic layer deposition method；
S3, using molecular-layer deposition method, the surface of inorganic coating layer forms organic clad on the outside of toner body.
The method provided in this embodiment for promoting fuel battery service life, it is heavy using atomic layer deposition method (ALD) and molecular layer Area method (MLD) successively forms inorganic coating layer on toner body surface and organic coating layer, ALD method and MLD method are capable of forming automatically Selective coated is automatically selected and is deposited at defective or functional group carbon dust, and in the surface Pt and no function The carbon blacksurface of group not will form cladding, this is because ALD method and MLD method need surface functional group that could grow, intact tool There is the growth of the unsuitable oxide of graphite surface and platinum surface of sp2 key；And the fault location of porous carbon is precisely that toner body is easy The place of corrosion, thus, the above method, can be effective over carbon dust surface by forming inorganic coating layer and organic coating layer The fault location being oxidized easily, but the surface Pt is not coated, do not influence the catalytic of catalyst while preventing catalytic erosion Can, the electric conductivity at the uncoated place of carbon black is kept, promotes the service life of fuel cell significantly.
Organic clad is coated again outside inorganic coating layer by molecular-layer deposition method, and the organic polymer of formation is in acidity With ALD inorganic coating layer and the carbon dust on the inside of it can be preferably protected in the environment of high temperature and humidity, further increase catalyst Anti-corrosion capability；The substrate that ALD inorganic coating layer is grown as MLD, provide MLD growth needed for-OH so that MLD with compared with Circle number can form the pin-free cladding of even compact less.
The above-mentioned inorganic coating layer formed on toner body surface is preferably metal oxide, is metal in the present embodiment Any one in oxide, metal phosphate, metal fluoride or metal sulfide.
Preferably within the scope of 0.1~5nm, this can be realized accurate the thickness of above-mentioned inorganic coating layer by frequency of depositing Ground control avoids too thin the effect for protect carbon dust not to be corroded, the activity of too thick influence catalyst being not achieved.
Specifically, above-mentioned ALD method includes: in the method that toner body surface forms inorganic coating layer
S201, the type of the inorganic coating layer deposited as needed select the presoma of reaction, and setting depositing operation is joined Number: depositing temperature is 100~300 DEG C, and deposition pressure is 0.01~100torr；
Precursor A steam is introduced into reaction chamber by S202 in the case where nitrogen or argon gas carry, and the retention time is 10~120 Second；
S203 purges reaction chamber with nitrogen or argon gas, and precursor B steam is introduced into reaction in the case where nitrogen or argon gas carry In room, the retention time is 10~120 seconds；
S204 purges reaction chamber with nitrogen or argon gas；
S205, repetitive process S202~S204, until depositing to required inorganic coating thickness degree on toner body surface.
Wherein, the precursor A and the precursor B are selected according to the type of the inorganic coating layer, as can Select embodiment, the precursor A is metal halide or metal organic complex, the precursor B be water, oxygen, ozone, Hydrogen peroxide, hydrogen sulfide, fluorine gas, hydrofluoric acid, any one in trimethyl phosphate.
The thickness of above-mentioned organic coating layer avoids too thin protection inside nothing being not achieved preferably within the scope of 0.1~10nm The effect that machine clad and carbon dust are not corroded, the too thick activity for influencing catalyst.It is further preferred that above-mentioned MLD method is in nothing The method that machine cover surface forms organic clad includes:
S301 deposits the type of organic clad as needed, selects the first presoma of reaction, and setting depositing operation is joined Number: depositing temperature is 100~300 DEG C, and deposition pressure is 0.01~100torr；
First precursor vapor is introduced into reaction chamber, the first precursor vapor by S302 in the case where nitrogen or argon gas carry It is chemisorbed on toner body, the retention time is 10~120 seconds；
S303 purges reaction chamber with nitrogen or argon gas, and the second presoma is introduced into reaction in the case where nitrogen or argon gas carry In room, the second presoma and first forerunner's precursor reactant obtain organic coating layer, and the reaction time is 10~120 seconds；
S304 purges reaction chamber with nitrogen or argon gas；
S305, repetitive process S302~S304, until depositing to required organic coating thickness degree on toner body surface.
Wherein it is preferred to which first presoma is paraphenylene diisocyanate, pyromellitic acid anhydride, to two isocyanide of benzene Any one in acid esters, trimethyl aluminium, second presoma be 1,6- hexamethylene diamine, ethylenediamine, 1,10- diamino decane, 1,4- dihydroxy -2- butine, ethylene glycol, any one in glycerine.
Embodiment two
The embodiment of the present invention provides a kind of method for promoting fuel battery service life, to as fuel-cell catalyst raw material Platinum-carrying carbon material is handled, and processing method includes:
The toner body that load has Pt is put into the porous container with multiple micropores by S1, and porous container is placed in instead Answer interior, reaction chamber vacuumized, replaces nitrogen at least three times, by between particle or in hole oxygen and water remove, keep away Exempt from residue and precursor gas reaction；Reaction chamber is warming up to 200 DEG C, and reaction chamber maintains the pressure of 50torr；Rotating porous holds Device, so that toner body is fully dispersed in porous container cavity；
S2, by the precursor A l (CH of atomic layer deposition3)3N of the steam in 30sccm flow velocity2Lower pulse is carried to enter instead Room is answered, is adsorbed on toner body, and is kept for 30 seconds, the N of 60sccm flow velocity is then used2It purges and takes away remaining Al (CH3)3It steams Vapour, N2Purge time is 30s, same H2N of the O steam in 30sccm flow velocity2Carrying under pulse enter reaction chamber until air pressure reaches To 50torr and kept for 50 seconds, and with the Al (CH that has been chemisorbed on toner body3)3Reaction generates Al2O3, time 50s, Subsequent excessive water vapour and by-product by 30sccm flow velocity N2Purging takes reaction chamber out of, purge time 30s, thus complete At an ALD deposition cycle；It repeats above-mentioned ALD deposition and completes circulation 10 times, i.e., form Al at toner body surface defect2O3 Nano particle；
S3, by the first presoma paraphenylene diisocyanate of molecular-layer deposition 30sccm flow velocity N2Carry lower pulse Into reaction chamber, it is adsorbed on existing Al2O3It on the toner body of clad, and is kept for 50 seconds, then uses the N of 60sccm flow velocity2Purging And take away remaining paraphenylene diisocyanate, N2Purge time is 30s, and the second presoma Isosorbide-5-Nitrae-dihydroxy -2- butine exists The N of 60sccm flow velocity2Carrying under pulse enter reaction chamber until air pressure reaches 100torr and is kept for 60 seconds, and with it is chemical The paraphenylene diisocyanate reaction being adsorbed on toner body generates polyurethane, time 60s, subsequent excessive Isosorbide-5-Nitrae-dihydroxy Base -2- butine and by-product by 30sccm flow velocity N2Purging takes reaction chamber out of, and purge time 30s, this completes one A MLD deposition cycle；It repeats above-mentioned MLD deposition and completes circulation 20 times, i.e., in the Al of toner body2O3Cover surface forms organic Clad.
Embodiment three
The embodiment of the present invention provides a kind of method for promoting fuel battery service life, to as fuel-cell catalyst raw material Platinum-carrying carbon material is handled, and processing method includes:
The toner body that load has Pt is put into the porous container with multiple micropores by S1, and porous container is placed in instead Answer interior, reaction chamber vacuumized, replaces nitrogen at least three times, by between particle or in hole oxygen and water remove, keep away Exempt from residue and precursor gas reaction；Reaction chamber is warming up to 150 DEG C, and reaction chamber maintains the pressure of 100torr；Rotating porous holds Device, so that toner body is fully dispersed in porous container cavity；
S2, by the presoma TiCl of atomic layer deposition4N of the steam in 30sccm flow velocity2It carries lower pulse and enters reaction Room is adsorbed on toner body, and is kept for 30 seconds, and the N of 50sccm flow velocity is then used2It purges and takes away remaining TiCl4Steam, N2 Purge time is 40s, same H2N of the O steam in 30sccm flow velocity2Carrying under pulse enter reaction chamber until air pressure reaches 50torr is simultaneously kept for 60 seconds, and with the TiCl that has been chemisorbed on toner body4Reaction generates TiO2, time 40s, subsequent mistake The water vapour and by-product of amount by 40sccm flow velocity N2It purges and takes reaction chamber out of, purge time 40s, this completes One ALD deposition cycle；It repeats above-mentioned ALD deposition and completes circulation 10 times, i.e., form TiO at toner body surface defect2Cladding Layer；
S3, by the first presoma pyromellitic acid anhydride of molecular-layer deposition 30sccm flow velocity N2Carry lower pulse Into reaction chamber, it is adsorbed on existing TiO2It on the toner body of clad, and is kept for 50 seconds, then uses the N of 50sccm flow velocity2Purging And take away remaining pyromellitic acid anhydride, N2Purge time is 30s, and same second presoma ethylenediamine is in 50sccm flow velocity N2Carrying under pulse enter reaction chamber until air pressure reach 100torr and keep 60 seconds, and be chemisorbed on toner body On pyromellitic acid anhydride reaction, generate polyimides, time 60s, subsequent excessive ethylenediamine and by-product by 30sccmN2Purging takes reaction chamber out of, and purge time 30s, this completes a MLD deposition cycles；Repeat above-mentioned MLD Deposition completes circulation 70 times, i.e., in the TiO of toner body2Cover surface forms organic clad.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention Within mind and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.

Claims (8)

1. a method of promote fuel battery service life, which is characterized in that the platinum-carrying carbon as fuel-cell catalyst raw material Material is handled, and processing method includes:
Load is had the toner body of Pt to be put into porous container by S1, and porous container is placed in reaction chamber, is vacuumized simultaneously to reaction chamber Replace nitrogen；Toner body is dispersed by the method for fluidisation or rotating porous container；
S2 forms inorganic coating layer on toner body surface using atomic layer deposition method；
S3, using molecular-layer deposition method, the surface of inorganic coating layer forms organic clad on the outside of toner body.
2. promoting the method for fuel battery service life as described in claim 1, it is characterised in that: in S2, the inorganic coating layer For any one in metal oxide, metal phosphate, metal fluoride or metal sulfide.
3. promoting the method for fuel battery service life as claimed in claim 2, which is characterized in that step S2 is specifically included:
S201, the type of the inorganic coating layer deposited as needed select the presoma of reaction, and deposition process parameters are arranged: heavy Accumulated temperature degree is 100~300 DEG C, and deposition pressure is 0.01~100torr；
Precursor A steam is introduced into reaction chamber by S202 in the case where nitrogen or argon gas carry, and the retention time is 10~120 seconds；
S203 purges reaction chamber with nitrogen or argon gas, and precursor B steam is introduced into reaction chamber in the case where nitrogen or argon gas carry In, the retention time is 10~120 seconds；
S204 purges reaction chamber with nitrogen or argon gas；
S205, repetitive process S202~S204, until depositing to required inorganic coating thickness degree on toner body surface.
4. promoting the method for fuel battery service life as claimed in claim 3, it is characterised in that: the precursor A is metal halogen Compound or metal organic complex；The precursor B is water, oxygen, ozone, hydrogen peroxide, hydrogen sulfide, fluorine gas, hydrofluoric acid, phosphoric acid Any one in trimethyl.
5. the method as claimed in claim 1 or 3 for promoting fuel battery service life, it is characterised in that: the inorganic coating layer With a thickness of 0.1~5nm.
6. promoting the method for fuel battery service life as described in claim 1, which is characterized in that institute step S3 is specifically included:
S301 deposits the type of organic clad as needed, selects the first presoma of reaction, and deposition process parameters are arranged: 100~300 DEG C of depositing temperature, deposition pressure is 0.01~100torr；
First precursor vapor is introduced into reaction chamber, the first precursor vapor chemistry by S302 in the case where nitrogen or argon gas carry It is adsorbed on toner body, the retention time is 10~120 seconds；
S303 purges reaction chamber with nitrogen or argon gas, and the second presoma is introduced into reaction chamber in the case where nitrogen or argon gas carry, Second presoma and first forerunner's precursor reactant obtain organic coating layer, and the reaction time is 10~120 seconds；
S304 purges reaction chamber with nitrogen or argon gas；
S305, repetitive process S302~S304, until depositing to required organic coating thickness degree on toner body surface.
7. promoting the method for fuel battery service life as claimed in claim 6, it is characterised in that: first presoma is to benzene Diisocyanate, pyromellitic acid anhydride, paraphenylene diisocyanate, any one in trimethyl aluminium, second presoma It is any one in 1,6- hexamethylene diamine, ethylenediamine, 1,10- diamino decane, 1,4- dihydroxy -2- butine, ethylene glycol, glycerine Kind.
8. the method as described in claim 1 or 6 for promoting fuel battery service life, it is characterised in that: the organic coating layer With a thickness of 0.1~10nm.
CN201910349314.5A 2019-04-28 2019-04-28 Method for prolonging service life of fuel cell Active CN110061247B (en)

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Cited By (3)

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CN110600755A (en) * 2019-09-06 2019-12-20 宁波柔创纳米科技有限公司 Coating method of carbon carrier material loaded with metal catalyst and battery
CN111600035A (en) * 2020-02-21 2020-08-28 华鼎国联四川动力电池有限公司 Lithium ion battery pole piece with artificial SEI film and preparation method thereof
CN114774886A (en) * 2022-06-21 2022-07-22 柔电（武汉）科技有限公司 Oxidation-resistant salt-fog-resistant wave-absorbing material powder and preparation method thereof

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