KR100837396B1 - 담지 촉매, 그 제조방법, 이를 포함하는 캐소드 전극 및상기 캐소드 전극을 포함하는 연료전지 - Google Patents
담지 촉매, 그 제조방법, 이를 포함하는 캐소드 전극 및상기 캐소드 전극을 포함하는 연료전지 Download PDFInfo
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- KR100837396B1 KR100837396B1 KR1020070004416A KR20070004416A KR100837396B1 KR 100837396 B1 KR100837396 B1 KR 100837396B1 KR 1020070004416 A KR1020070004416 A KR 1020070004416A KR 20070004416 A KR20070004416 A KR 20070004416A KR 100837396 B1 KR100837396 B1 KR 100837396B1
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- 239000003054 catalyst Substances 0.000 title claims abstract description 299
- 239000000446 fuel Substances 0.000 title claims abstract description 45
- 238000000034 method Methods 0.000 title claims abstract description 22
- 239000002245 particle Substances 0.000 claims abstract description 102
- 239000000203 mixture Substances 0.000 claims abstract description 55
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 48
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 41
- 239000012685 metal catalyst precursor Substances 0.000 claims abstract description 30
- 229910001092 metal group alloy Inorganic materials 0.000 claims abstract description 22
- 229920005862 polyol Polymers 0.000 claims abstract description 20
- 150000003077 polyols Chemical class 0.000 claims abstract description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 19
- 239000002105 nanoparticle Substances 0.000 claims abstract description 16
- 238000002156 mixing Methods 0.000 claims abstract description 15
- 238000001035 drying Methods 0.000 claims abstract description 10
- 238000010438 heat treatment Methods 0.000 claims abstract description 9
- 238000001816 cooling Methods 0.000 claims abstract description 5
- 238000001914 filtration Methods 0.000 claims abstract description 5
- 229910052751 metal Inorganic materials 0.000 claims description 100
- 239000002184 metal Substances 0.000 claims description 100
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 36
- 239000002243 precursor Substances 0.000 claims description 34
- 229910045601 alloy Inorganic materials 0.000 claims description 26
- 239000000956 alloy Substances 0.000 claims description 26
- 238000004519 manufacturing process Methods 0.000 claims description 16
- 229910052697 platinum Inorganic materials 0.000 claims description 14
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 12
- 238000005406 washing Methods 0.000 claims description 10
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 9
- 229910017052 cobalt Inorganic materials 0.000 claims description 9
- 239000010941 cobalt Substances 0.000 claims description 9
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims description 9
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 claims description 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 7
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 claims description 6
- 239000010931 gold Substances 0.000 claims description 5
- 239000005518 polymer electrolyte Substances 0.000 claims description 5
- 239000011651 chromium Substances 0.000 claims description 4
- 239000010949 copper Substances 0.000 claims description 4
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 4
- 229910052737 gold Inorganic materials 0.000 claims description 4
- 229910052759 nickel Inorganic materials 0.000 claims description 4
- 239000010948 rhodium Substances 0.000 claims description 4
- 239000010936 titanium Substances 0.000 claims description 4
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- KJTLSVCANCCWHF-UHFFFAOYSA-N Ruthenium Chemical compound [Ru] KJTLSVCANCCWHF-UHFFFAOYSA-N 0.000 claims description 3
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 3
- 229910052804 chromium Inorganic materials 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 229910052742 iron Inorganic materials 0.000 claims description 3
- 229910052763 palladium Inorganic materials 0.000 claims description 3
- 229910052707 ruthenium Inorganic materials 0.000 claims description 3
- 229910052719 titanium Inorganic materials 0.000 claims description 3
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 2
- 229910052741 iridium Inorganic materials 0.000 claims description 2
- GKOZUEZYRPOHIO-UHFFFAOYSA-N iridium atom Chemical compound [Ir] GKOZUEZYRPOHIO-UHFFFAOYSA-N 0.000 claims description 2
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 claims description 2
- 229910052762 osmium Inorganic materials 0.000 claims description 2
- SYQBFIAQOQZEGI-UHFFFAOYSA-N osmium atom Chemical compound [Os] SYQBFIAQOQZEGI-UHFFFAOYSA-N 0.000 claims description 2
- 229910052703 rhodium Inorganic materials 0.000 claims description 2
- MHOVAHRLVXNVSD-UHFFFAOYSA-N rhodium atom Chemical compound [Rh] MHOVAHRLVXNVSD-UHFFFAOYSA-N 0.000 claims description 2
- ZIBGPFATKBEMQZ-UHFFFAOYSA-N triethylene glycol Chemical compound OCCOCCOCCO ZIBGPFATKBEMQZ-UHFFFAOYSA-N 0.000 claims description 2
- 229910052720 vanadium Inorganic materials 0.000 claims description 2
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 claims description 2
- 239000011701 zinc Substances 0.000 claims description 2
- 229910052725 zinc Inorganic materials 0.000 claims description 2
- 150000002739 metals Chemical class 0.000 claims 1
- 230000003197 catalytic effect Effects 0.000 abstract description 11
- 230000009467 reduction Effects 0.000 abstract description 9
- 239000012808 vapor phase Substances 0.000 abstract description 3
- 239000000463 material Substances 0.000 abstract 4
- 238000004140 cleaning Methods 0.000 abstract 2
- 239000002923 metal particle Substances 0.000 description 33
- 239000000243 solution Substances 0.000 description 24
- 238000002360 preparation method Methods 0.000 description 18
- 238000006243 chemical reaction Methods 0.000 description 16
- 239000012528 membrane Substances 0.000 description 10
- 238000005054 agglomeration Methods 0.000 description 9
- 230000002776 aggregation Effects 0.000 description 9
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 6
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 6
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- 238000009826 distribution Methods 0.000 description 6
- 229910052739 hydrogen Inorganic materials 0.000 description 6
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 5
- 239000007789 gas Substances 0.000 description 5
- 239000001257 hydrogen Substances 0.000 description 5
- 239000003273 ketjen black Substances 0.000 description 5
- 239000007864 aqueous solution Substances 0.000 description 4
- 239000012071 phase Substances 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000003756 stirring Methods 0.000 description 4
- 238000002411 thermogravimetry Methods 0.000 description 4
- 229910002837 PtCo Inorganic materials 0.000 description 3
- 239000002253 acid Substances 0.000 description 3
- 238000005275 alloying Methods 0.000 description 3
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 3
- 239000003792 electrolyte Substances 0.000 description 3
- 230000001747 exhibiting effect Effects 0.000 description 3
- 239000007800 oxidant agent Substances 0.000 description 3
- 230000001590 oxidative effect Effects 0.000 description 3
- 229910003771 Gold(I) chloride Inorganic materials 0.000 description 2
- 229910001260 Pt alloy Inorganic materials 0.000 description 2
- 238000010306 acid treatment Methods 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 239000012298 atmosphere Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- FDWREHZXQUYJFJ-UHFFFAOYSA-M gold monochloride Chemical compound [Cl-].[Au+] FDWREHZXQUYJFJ-UHFFFAOYSA-M 0.000 description 2
- 229910002804 graphite Inorganic materials 0.000 description 2
- 239000010439 graphite Substances 0.000 description 2
- 238000011068 loading method Methods 0.000 description 2
- 239000011572 manganese Substances 0.000 description 2
- 229910000000 metal hydroxide Inorganic materials 0.000 description 2
- 150000004692 metal hydroxides Chemical class 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 230000009257 reactivity Effects 0.000 description 2
- DPZVOQSREQBFML-UHFFFAOYSA-N 3h-pyrrolo[3,4-c]pyridine Chemical compound C1=NC=C2CN=CC2=C1 DPZVOQSREQBFML-UHFFFAOYSA-N 0.000 description 1
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- 229910002849 PtRu Inorganic materials 0.000 description 1
- 229910000929 Ru alloy Inorganic materials 0.000 description 1
- 239000006230 acetylene black Substances 0.000 description 1
- 239000003929 acidic solution Substances 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 239000002041 carbon nanotube Substances 0.000 description 1
- 229910021393 carbon nanotube Inorganic materials 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 238000005119 centrifugation Methods 0.000 description 1
- QGUAJWGNOXCYJF-UHFFFAOYSA-N cobalt dinitrate hexahydrate Chemical compound O.O.O.O.O.O.[Co+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O QGUAJWGNOXCYJF-UHFFFAOYSA-N 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 229920001940 conductive polymer Polymers 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 150000004696 coordination complex Chemical class 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000007405 data analysis Methods 0.000 description 1
- 238000001739 density measurement Methods 0.000 description 1
- 238000003795 desorption Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000006056 electrooxidation reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- GPRLSGONYQIRFK-UHFFFAOYSA-N hydron Chemical compound [H+] GPRLSGONYQIRFK-UHFFFAOYSA-N 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000012792 lyophilization process Methods 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 239000012299 nitrogen atmosphere Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000004917 polyol method Methods 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 239000011541 reaction mixture Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- JBQYATWDVHIOAR-UHFFFAOYSA-N tellanylidenegermanium Chemical compound [Te]=[Ge] JBQYATWDVHIOAR-UHFFFAOYSA-N 0.000 description 1
- GPPXJZIENCGNKB-UHFFFAOYSA-N vanadium Chemical compound [V]#[V] GPPXJZIENCGNKB-UHFFFAOYSA-N 0.000 description 1
- 238000010626 work up procedure Methods 0.000 description 1
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- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
- B01J37/02—Impregnation, coating or precipitation
- B01J37/0201—Impregnation
- B01J37/0203—Impregnation the impregnation liquid containing organic compounds
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- B28—WORKING CEMENT, CLAY, OR STONE
- B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
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- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/70—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
- B01J23/89—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with noble metals
- B01J23/8913—Cobalt and noble metals
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- B01J35/40—
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- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
- B01J37/02—Impregnation, coating or precipitation
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- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
- B01J37/16—Reducing
- B01J37/18—Reducing with gases containing free hydrogen
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28C7/00—Controlling the operation of apparatus for producing mixtures of clay or cement with other substances; Supplying or proportioning the ingredients for mixing clay or cement with other substances; Discharging the mixture
- B28C7/02—Controlling the operation of the mixing
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B28C7/00—Controlling the operation of apparatus for producing mixtures of clay or cement with other substances; Supplying or proportioning the ingredients for mixing clay or cement with other substances; Discharging the mixture
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
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- H01M8/1004—Fuel cells with solid electrolytes characterised by membrane-electrode assemblies [MEA]
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
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- 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
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- Y02E60/30—Hydrogen technology
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Abstract
Description
본 발명에 따른 담지 촉매에 있어서, 상기 제1 금속 및 제2 금속 함량 이외의 부분은 탄소계 촉매 담체 성분이 될 것인바, 주로 탄소 성분이고, 약간의 불순불 성분이 포함될 수 있다.
중량% | 원자% | ||||
1 영역 | 2 영역 | 1 영역 | 2 영역 | ||
제조예 2 | Co | 9.268 | 8.885 | 25.269 | 24.405 |
Pt | 90.732 | 91.114 | 74.730 | 75.594 | |
비교예 | Co | 10.648 | 8.546 | 28.289 | 23.625 |
Pt | 89.351 | 91.454 | 71.710 | 76.374 |
전기화학적으로 활성을 갖는 면적 (cm2/Pt-g) | |
TKK | 6.08 |
제조예 2 | 18.63 |
Claims (19)
- 탄소계 촉매 담체 및 상기 탄소계 촉매 담체의 표면에 흡착되어 있는 제1 금속-제2 금속 합금 촉매 입자를 포함하는 담지 촉매로서, 상기 합금 촉매 입자는 중량 백분율 10%에 해당하는 평균 입경(D10)과 중량 백분율 90%에 해당하는 평균 입경(D90)과의 차이가 0.1 내지 10 nm인 것을 특징으로 하는 담지 촉매.
- 제1항에 있어서, 상기 제1 금속-제2 금속 합금 촉매 입자는 그 입경이 2 내지 20nm인 경우가 99.5 내지 100%인 것을 특징으로 하는 담지 촉매.
- 제1항에 있어서, 상기 제1 금속-제2 금속 합금 촉매 입자에서 제1 금속은 담지 촉매 총 중량의 40 내지 60 중량%로 담지된 것을 특징으로 하는 담지 촉매.
- 제1항에 있어서, 상기 제1 금속-제2 금속 합금 촉매 입자에서 제2 금속은 담지 촉매 총 중량 대비 0.01 내지 5 중량%로 담지된 것을 특징으로 하는 담지 촉매.
- 제1항에 있어서, 상기 제1 금속-제2 금속 합금 촉매 입자의 평균 입경이 5nm 이하인 것을 특징으로 하는 담지 촉매.
- 제1항에 있어서, 상기 제1 금속은 백금(Pt), 루테늄(Ru), 팔라듐(Pd), 로 듐(Rh), 이리듐(Ir), 오스뮴(Os) 및 금(Pt)으로 이루어진 군으로부터 선택된 금속인 것을 특징으로 하는 담지 촉매.
- 제1항에 있어서, 상기 제2 금속은 코발트, 니켈, 구리, 아연, 바나듐, 크롬, 망간, 철 및 티타늄으로 이루어진 군으로부터 선택된 금속인 것을 특징으로 하는 담지 촉매.
- 제1항에 있어서, 상기 담지 촉매 내의 임의의 일 국소 부분에서의 제1 금속 및 제2 금속의 총 함량 100 원자% 대비 상기 제2 금속의 함량과 임의의 다른 국소 부분에서의 제1 금속 및 제2 금속의 총 함량 100 원자% 대비 상기 제2 금속의 함량의 차이가 20 내지 30 원자%인 것을 특징으로 하는 담지 촉매.
- 제1항에 있어서, 상기 제1 촉매 금속이 백금이고, 상기 제2 촉매 금속이 코발트인 것을 특징으로 하는 담지 촉매.
- (a) 제1 금속 촉매 전구체와 폴리올을 혼합하여 제1 금속 촉매 전구체 함유 혼합물을 제조하는 단계;(b) 탄소계 촉매 담체, 폴리올과 물의 혼합물을 혼합하여 탄소계 촉매 담체 함유 혼합물을 제조하는 단계;(c) 상기 (a)단계의 제1 금속 촉매 전구체 함유 혼합물과 상기 (b) 단계의 탄소계 촉매 담체 함유 혼합물을 혼합하는 단계;(d) 상기 (c) 단계의 혼합물의 pH를 조절한 후, 이를 가열 및 냉각하는 단계;(e) 제2 금속 촉매 전구체와 물을 혼합하여 제2 금속 촉매 전구체 함유 용액을 준비하는 단계;(f) 상기 (e) 단계의 용액을 상기 (d) 단계의 혼합물에 첨가하고, pH를 조절하는 단계;(g) 상기 (f) 단계의 결과물을 여과, 세척 및 건조하는 단계;(h) 상기 (g) 단계의 결과물을 300 내지 350℃에서 기상 환원시키는 단계; 및(i) 상기 (h) 단계의 결과물을 정제, 세척 및 건조하는 단계를 포함하는 담지 촉매의 제조방법으로서,상기 (e)단계에서 사용하는 제2 금속 촉매 전구체는 최종 결과물인 담지 촉매 내의 상기 제1 금속-제2 금속 합금 촉매 입자 99.5 내지 100%의 입경이 2 내지 20nm가 되도록 하는 나노 크기인 것을 특징으로 하는 담지 촉매의 제조방법.
- 제10항에 있어서, 상기 (a) 단계 또는 (b) 단계의 폴리올은 에틸렌글리콜, 디에틸렌글리콜, 트리에틸렌글리콜 또는 그 혼합물인 것을 특징으로 하는 담지 촉매의 제조방법.
- 제10항에 있어서, 상기 (d) 단계는 pH를 9 내지 13으로 조절한 후 이를 90 내지 115℃로 가열한 후, 다시 20 내지 25℃로 냉각하는 것을 특징으로 하는 담지 촉매의 제조방법.
- 제10항에 있어서, 상기 (e) 단계의 제2 촉매 금속 전구체의 함량은 상기 (e) 단계의 결과물인 제2 금속 촉매 전구체 함유 용액 100 중량부를 기준으로 하여 1 내지 2.5 중량부인 것을 특징으로 하는 담지 촉매의 제조방법.
- 제10항에 있어서, 상기 (f) 단계는 pH를 8 내지 10으로 조절하는 것을 특징으로 하는 담지 촉매의 제조방법.
- 제10항에 있어서, 상기 제2 촉매 금속 전구체는 Co(OH)2, Co(NO3)2인 것을 특징으로 하는 담지 촉매의 제조방법.
- 삭제
- 제1항 내지 제9항 중 어느 한 항의 담지 촉매를 포함하는 캐소드 전극.
- 제1항 내지 제9항 중 어느 한 항의 담지 촉매를 포함하는 캐소드 전극을 구비하는 연료전지.
- 제18항에 있어서, 상기 연료 전지가 고분자 전해질형 연료전지 (PEMFC)인 것 을 특징으로 하는 연료전지.
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US11/877,881 US7875569B2 (en) | 2007-01-15 | 2007-10-24 | Supported catalyst, method for preparing the same, cathode electrode comprising the same, and fuel cell comprising the cathode electrode |
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