KR20170034255A - 비대칭 코어-쉘 나노입자 구조에 기반한 산소환원용 전극촉매 및 그 제조방법 - Google Patents
비대칭 코어-쉘 나노입자 구조에 기반한 산소환원용 전극촉매 및 그 제조방법 Download PDFInfo
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- KR20170034255A KR20170034255A KR1020150132676A KR20150132676A KR20170034255A KR 20170034255 A KR20170034255 A KR 20170034255A KR 1020150132676 A KR1020150132676 A KR 1020150132676A KR 20150132676 A KR20150132676 A KR 20150132676A KR 20170034255 A KR20170034255 A KR 20170034255A
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- 239000011258 core-shell material Substances 0.000 title claims abstract description 40
- 238000000034 method Methods 0.000 title claims description 20
- 239000010411 electrocatalyst Substances 0.000 title description 3
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 claims abstract description 51
- 239000003054 catalyst Substances 0.000 claims abstract description 47
- 239000010931 gold Substances 0.000 claims abstract description 43
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 35
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims abstract description 35
- 229910052737 gold Inorganic materials 0.000 claims abstract description 35
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 35
- 239000001301 oxygen Substances 0.000 claims abstract description 35
- 239000000758 substrate Substances 0.000 claims abstract description 23
- 239000011521 glass Substances 0.000 claims abstract description 22
- 229910052763 palladium Inorganic materials 0.000 claims abstract description 20
- 238000006243 chemical reaction Methods 0.000 claims abstract description 15
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 8
- 238000003786 synthesis reaction Methods 0.000 claims abstract description 7
- 230000002194 synthesizing effect Effects 0.000 claims abstract description 7
- 239000010409 thin film Substances 0.000 claims abstract description 4
- 238000000151 deposition Methods 0.000 claims abstract description 3
- 238000002407 reforming Methods 0.000 claims abstract description 3
- 238000000427 thin-film deposition Methods 0.000 claims abstract description 3
- 239000012696 Pd precursors Substances 0.000 claims description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- 239000002131 composite material Substances 0.000 claims description 3
- 230000003647 oxidation Effects 0.000 claims description 3
- 238000007254 oxidation reaction Methods 0.000 claims description 3
- 229910021389 graphene Inorganic materials 0.000 claims description 2
- 238000006722 reduction reaction Methods 0.000 abstract description 30
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 abstract description 23
- 239000000446 fuel Substances 0.000 abstract description 21
- 238000004519 manufacturing process Methods 0.000 abstract description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 13
- 229910052697 platinum Inorganic materials 0.000 abstract description 11
- 229910052751 metal Inorganic materials 0.000 abstract description 8
- 239000002184 metal Substances 0.000 abstract description 8
- 230000003197 catalytic effect Effects 0.000 abstract description 4
- 230000007547 defect Effects 0.000 abstract description 3
- 239000012535 impurity Substances 0.000 abstract description 3
- 238000003795 desorption Methods 0.000 abstract description 2
- 239000007772 electrode material Substances 0.000 abstract description 2
- 239000003638 chemical reducing agent Substances 0.000 abstract 1
- 238000002525 ultrasonication Methods 0.000 abstract 1
- 239000000243 solution Substances 0.000 description 22
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 14
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 12
- 239000011248 coating agent Substances 0.000 description 9
- 238000000576 coating method Methods 0.000 description 9
- 229910052739 hydrogen Inorganic materials 0.000 description 8
- 239000001257 hydrogen Substances 0.000 description 8
- SJECZPVISLOESU-UHFFFAOYSA-N 3-trimethoxysilylpropan-1-amine Chemical compound CO[Si](OC)(OC)CCCN SJECZPVISLOESU-UHFFFAOYSA-N 0.000 description 6
- 239000000843 powder Substances 0.000 description 6
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 5
- 230000010287 polarization Effects 0.000 description 4
- 229920006395 saturated elastomer Polymers 0.000 description 4
- 238000004458 analytical method Methods 0.000 description 3
- -1 hydrogen ions Chemical class 0.000 description 3
- 239000002243 precursor Substances 0.000 description 3
- 238000006467 substitution reaction Methods 0.000 description 3
- 238000005406 washing Methods 0.000 description 3
- OAKJQQAXSVQMHS-UHFFFAOYSA-N Hydrazine Chemical compound NN OAKJQQAXSVQMHS-UHFFFAOYSA-N 0.000 description 2
- 238000002441 X-ray diffraction Methods 0.000 description 2
- 150000001412 amines Chemical class 0.000 description 2
- 229910017052 cobalt Inorganic materials 0.000 description 2
- 239000010941 cobalt Substances 0.000 description 2
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 239000008367 deionised water Substances 0.000 description 2
- 229910021641 deionized water Inorganic materials 0.000 description 2
- ZOMNIUBKTOKEHS-UHFFFAOYSA-L dimercury dichloride Chemical class Cl[Hg][Hg]Cl ZOMNIUBKTOKEHS-UHFFFAOYSA-L 0.000 description 2
- 239000012153 distilled water Substances 0.000 description 2
- BBKFSSMUWOMYPI-UHFFFAOYSA-N gold palladium Chemical group [Pd].[Au] BBKFSSMUWOMYPI-UHFFFAOYSA-N 0.000 description 2
- GPRLSGONYQIRFK-UHFFFAOYSA-N hydron Chemical compound [H+] GPRLSGONYQIRFK-UHFFFAOYSA-N 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 238000006479 redox reaction Methods 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 230000002269 spontaneous effect Effects 0.000 description 2
- 238000009210 therapy by ultrasound Methods 0.000 description 2
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 1
- 101150003085 Pdcl gene Proteins 0.000 description 1
- 229910001260 Pt alloy Inorganic materials 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- KZNMRPQBBZBTSW-UHFFFAOYSA-N [Au]=O Chemical compound [Au]=O KZNMRPQBBZBTSW-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 235000011114 ammonium hydroxide Nutrition 0.000 description 1
- 238000010923 batch production Methods 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 229920001940 conductive polymer Polymers 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 239000003599 detergent Substances 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000003670 easy-to-clean Effects 0.000 description 1
- 238000003487 electrochemical reaction Methods 0.000 description 1
- 238000003411 electrode reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 229910001922 gold oxide Inorganic materials 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- QWPPOHNGKGFGJK-UHFFFAOYSA-N hypochlorous acid Chemical compound ClO QWPPOHNGKGFGJK-UHFFFAOYSA-N 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 238000000527 sonication Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
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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
- H01M4/90—Selection of catalytic material
- H01M4/9041—Metals or alloys
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
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- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Inert Electrodes (AREA)
- Catalysts (AREA)
Abstract
Description
도 2는 본 발명 비대칭 코어-쉘 나노입자 구조에 기반한 산소환원용 전극촉매 제조방법의 실행 순서도,
도 3은 APTMS(3-Aminopropyl Trimethoxysilane) 코팅된 유리 슬라이드를 사용하여 비대칭 코어-쉘 나노 입자 합성방법의 개략적인 공정도로서, (1)은 APTMS(3-Aminopropyl Trimethoxysilane)를 사용하여 아민과 함께 유리기판의 표면 개질화 하는 공정, (2)는 유리기판 상에 13 nm의 금 나노입자(AuNPs)를 부착하는 공정, (3)은 금 나노입자(AuNPs)에 팔라듐의 자발적 증착공정, (4)는 물에서 초음파 처리하여 코어-쉘 나노입자를 유리기판으로부터 탈착시키는 공정을 나타낸다.
도 4는 본 발명의 방법으로 합성한 금-팔라듐 코어-쉘 나노입자의 구조도,
도 5의 (A),(B)는 본 발명의 일실시 예에 따른 금-나노입자의 XPS 분석결과를 나타낸 그래프,
도 6은 AuPd/rGO 촉매 시리즈의 XRD 패턴을 나타낸 그래프,
도 7의 (A)는 50 mV s-1의 스캔 속도, N2 를 주입하여 산소를 제거한 0.1 M HClO4 용액 내에 저장된 CVs, (B)는 SEM-EDS에 의해 추정된 팔라듐/금 중량 % 비(Δ)의 플롯과 표면의 Pd 산화물(□) 및 전구체의 Pd 농도의 함수로서 금 산화물(○)의 집적된 전하 감소를 나타낸 도면,
도 8의 (A)는 10 mV s-1(회전속도 = 1600 rpm)의 스캔 속도로 산소(O2)-포화 0.1 M NaOH 용액에서 산소환원용 RDE 분극 곡선, (B)는 (a)에 제시된 RDE 데이터로부터 얻어진 산소환원용 K - L plots을 나타낸 도면,
도 9는 10 mVs-1(회전속도 = 1600 rpm)의 스캔 속도에서 (A)Au0.43Pd0.57/ rGO 및 (B) Pt-20/C를 도입한 GC전극을 각각 사용하여 O2로 포화된 0.1 M NaOH 용액에서 100회 반복 실행으로 얻어진 산화환원용 RDE 분극 곡선을 나타낸 그래프이다.
Claims (4)
- 비대칭 코어-쉘 나노입자를 포함하는 비대칭 코어-쉘 나노입자 구조에 기반한 산소환원용 전극촉매.
- 제 1항에 있어서, 상기 코어-쉘 금 나노입자의 외부 표면에 다공성 팔라듐이 부분적으로 코팅되어 있는 것을 특징으로 하는 비대칭 코어-쉘 나노입자 구조에 기반한 산소환원용 전극촉매.
- 제 2항에 있어서, 상기 다공성 팔라듐을 형성하는 것은 팔라듐 전구체를 첨가하여 갈바닉치환반응(galvanic replacement reaction)의 유도를 포함하는 것을 특징으로 하는 비대칭 코어-쉘 나노입자 구조에 기반한 산소환원용 전극촉매.
- 유리기판을 금 나노입자가 용이하게 붙을 수 있도록 표면을 화학적으로 개질하는 유리기판 개질단계(S100단계)와; 상기 유리기판 표면에 금 나노입자(AuNPs)를 붙이는 금 나노입자 부착단계(S200단계)와; 상기 금 나노입자(AuNPs)의 표면상에 팔라듐 박막을 증착하는 팔라듐 박막 증착단계(S300단계) 및; 환원 산화그래핀(rGO)-금.팔라듐(AuPd) 복합 재료를 합성하는 복합재료 합성단계(S400단계)로 이루어진 비대칭 코어-쉘 나노입자 구조에 기반한 산소환원용 전극촉매 제조방법.
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KR20200002348A (ko) * | 2018-06-29 | 2020-01-08 | 고려대학교 산학협력단 | 조절 가능한 플라즈모닉 공진 특성을 가지는 메타물질 구조체 및 그 제조 방법 |
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US5489563A (en) | 1994-07-29 | 1996-02-06 | Degussa Aktiengesellschaft | Platinum alloy catalyst for fuel cells and method of its production |
US5498585A (en) | 1993-06-14 | 1996-03-12 | Degussa Aktiengesellschaft | Sulphidized catalyst which contains platinum on activated carbon |
KR101422565B1 (ko) | 2011-04-27 | 2014-07-24 | 재단법인대구경북과학기술원 | 다공성 이중금속 구조에 기반한 산소-환원용 전극촉매, 및 그 제조방법 |
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Publication number | Priority date | Publication date | Assignee | Title |
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US5498585A (en) | 1993-06-14 | 1996-03-12 | Degussa Aktiengesellschaft | Sulphidized catalyst which contains platinum on activated carbon |
US5489563A (en) | 1994-07-29 | 1996-02-06 | Degussa Aktiengesellschaft | Platinum alloy catalyst for fuel cells and method of its production |
KR101422565B1 (ko) | 2011-04-27 | 2014-07-24 | 재단법인대구경북과학기술원 | 다공성 이중금속 구조에 기반한 산소-환원용 전극촉매, 및 그 제조방법 |
Cited By (1)
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KR20200002348A (ko) * | 2018-06-29 | 2020-01-08 | 고려대학교 산학협력단 | 조절 가능한 플라즈모닉 공진 특성을 가지는 메타물질 구조체 및 그 제조 방법 |
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