KR101821805B1 - 연료전지의 금속 분리판의 제조방법 및 이에 따라 제조된 금속 분리판 - Google Patents
연료전지의 금속 분리판의 제조방법 및 이에 따라 제조된 금속 분리판 Download PDFInfo
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- 229910052751 metal Inorganic materials 0.000 title claims abstract description 116
- 239000002184 metal Substances 0.000 title claims abstract description 116
- 239000000446 fuel Substances 0.000 title claims abstract description 29
- 238000000034 method Methods 0.000 title claims abstract description 29
- 239000000843 powder Substances 0.000 claims description 50
- 229910017060 Fe Cr Inorganic materials 0.000 claims description 30
- 229910002544 Fe-Cr Inorganic materials 0.000 claims description 30
- UPHIPHFJVNKLMR-UHFFFAOYSA-N chromium iron Chemical compound [Cr].[Fe] UPHIPHFJVNKLMR-UHFFFAOYSA-N 0.000 claims description 30
- 229910000831 Steel Inorganic materials 0.000 claims description 29
- 239000010959 steel Substances 0.000 claims description 29
- 229910021193 La 2 O 3 Inorganic materials 0.000 claims description 27
- 229910017563 LaCrO Inorganic materials 0.000 claims description 19
- 239000008188 pellet Substances 0.000 claims description 19
- 239000000654 additive Substances 0.000 claims description 16
- 230000000996 additive effect Effects 0.000 claims description 16
- 229910000859 α-Fe Inorganic materials 0.000 claims description 16
- 239000007787 solid Substances 0.000 claims description 15
- 239000002002 slurry Substances 0.000 claims description 13
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 claims description 12
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 claims description 12
- 239000011230 binding agent Substances 0.000 claims description 11
- 238000005245 sintering Methods 0.000 claims description 11
- 239000002904 solvent Substances 0.000 claims description 9
- 239000011812 mixed powder Substances 0.000 claims description 8
- 238000002156 mixing Methods 0.000 claims description 8
- 238000001035 drying Methods 0.000 claims description 6
- 239000001257 hydrogen Substances 0.000 claims description 6
- 229910052739 hydrogen Inorganic materials 0.000 claims description 6
- 238000009694 cold isostatic pressing Methods 0.000 claims description 5
- 238000000465 moulding Methods 0.000 claims description 5
- 229920002037 poly(vinyl butyral) polymer Polymers 0.000 claims description 5
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 4
- 239000011259 mixed solution Substances 0.000 claims description 3
- 238000009837 dry grinding Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 29
- 230000001590 oxidative effect Effects 0.000 abstract description 12
- 230000003647 oxidation Effects 0.000 abstract description 10
- 238000007254 oxidation reaction Methods 0.000 abstract description 10
- 229910010293 ceramic material Inorganic materials 0.000 abstract description 3
- 239000000956 alloy Substances 0.000 description 45
- 239000011651 chromium Substances 0.000 description 20
- 230000015572 biosynthetic process Effects 0.000 description 14
- 238000012360 testing method Methods 0.000 description 13
- 230000000052 comparative effect Effects 0.000 description 10
- 238000005259 measurement Methods 0.000 description 10
- 238000003786 synthesis reaction Methods 0.000 description 10
- 230000008859 change Effects 0.000 description 8
- 229910052761 rare earth metal Inorganic materials 0.000 description 8
- 230000008569 process Effects 0.000 description 7
- 229910045601 alloy Inorganic materials 0.000 description 6
- 238000000576 coating method Methods 0.000 description 6
- 230000006866 deterioration Effects 0.000 description 6
- 238000000926 separation method Methods 0.000 description 6
- 239000000919 ceramic Substances 0.000 description 5
- 229910052804 chromium Inorganic materials 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 5
- 238000013507 mapping Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 239000007789 gas Substances 0.000 description 4
- 238000002360 preparation method Methods 0.000 description 4
- 238000004458 analytical method Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 238000003826 uniaxial pressing Methods 0.000 description 3
- 229910000640 Fe alloy Inorganic materials 0.000 description 2
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 2
- 238000000498 ball milling Methods 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 150000002431 hydrogen Chemical class 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 229920005596 polymer binder Polymers 0.000 description 2
- 239000002491 polymer binding agent Substances 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 238000010298 pulverizing process Methods 0.000 description 2
- 239000007858 starting material Substances 0.000 description 2
- 229910000599 Cr alloy Inorganic materials 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 229910002262 LaCrO3 Inorganic materials 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- WGLPBDUCMAPZCE-UHFFFAOYSA-N Trioxochromium Chemical compound O=[Cr](=O)=O WGLPBDUCMAPZCE-UHFFFAOYSA-N 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 229910021525 ceramic electrolyte Inorganic materials 0.000 description 1
- 150000001845 chromium compounds Chemical class 0.000 description 1
- 229910000423 chromium oxide Inorganic materials 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000007571 dilatometry Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 229910001026 inconel Inorganic materials 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 238000010309 melting process Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000011268 mixed slurry Substances 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 231100000572 poisoning Toxicity 0.000 description 1
- 230000000607 poisoning effect Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C33/00—Making ferrous alloys
- C22C33/02—Making ferrous alloys by powder metallurgy
- C22C33/0257—Making ferrous alloys by powder metallurgy characterised by the range of the alloying elements
- C22C33/0278—Making ferrous alloys by powder metallurgy characterised by the range of the alloying elements with at least one alloying element having a minimum content above 5%
- C22C33/0285—Making ferrous alloys by powder metallurgy characterised by the range of the alloying elements with at least one alloying element having a minimum content above 5% with Cr, Co, or Ni having a minimum content higher than 5%
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- C25B9/00—Cells or assemblies of cells; Constructional parts of cells; Assemblies of constructional parts, e.g. electrode-diaphragm assemblies; Process-related cell features
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- H01M8/0204—Non-porous and characterised by the material
- H01M8/0215—Glass; Ceramic materials
- H01M8/0217—Complex oxides, optionally doped, of the type AMO3, A being an alkaline earth metal or rare earth metal and M being a metal, e.g. perovskites
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- B22F2201/00—Treatment under specific atmosphere
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- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F2998/00—Supplementary information concerning processes or compositions relating to powder metallurgy
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Abstract
Description
도 2는 비교예 1에서 제조된 금속 분리판, 실시예 9 내지 12에서 제조된 금속 분리판 합금 소재 및 실시예 13 내지 16에서 제조된 금속 분리판 합금 소재의 SEM 사진이다.
도 3은 비교예 1에서 제조된 금속 분리판의 EDS 맵핑 사진이다.
도 4는 실시예 13 내지 16에서 제조된 금속 분리판 합금 소재의 EDS 맵핑 사진이다.
도 5는 실시예 9 내지 12에서 제조된 금속 분리판 합금 소재의 EDS 맵핑 사진이다.
도 6은 본 발명의 시험예 4에서 실시예 12에서 제조된 금속 분리판의 열팽창율에 대해 측정한 결과를 나타낸 그래프이다.
도 7은 금속 분리판에 대한 면저항을 측정하기 위한 4단자법에 의한 전기저항 측정 모식도이다.
도 8은 본 발명의 시험예 6에서 실시예 9 내지 11에서 제조된 금속 분리판의 면저항 변화를 측정한 결과를 나타낸 그래프이다.
도 9는 본 발명의 시험예 7에서 실시예 12에서 제조된 금속 분리판 시편의 열사이클 횟수에 따른 면저항 값을 측정하여 나타낸 그래프이다.
조성 | 이론 밀도 (g/㎤) |
소결 밀도 (g/㎤) |
상대 밀도 (%) |
비교예 1 | 7.74 | 7.36 | 95.09 |
실시예 1 | 7.73 | 7.36 | 95.21 |
실시예 2 | 7.73 | 7.36 | 95.21 |
실시예 3 | 7.70 | 7.35 | 95.45 |
실시예 4 | 7.68 | 6.99 | 90.98 |
실시예 5 | 7.73 | 7.40 | 95.73 |
실시예 6 | 7.73 | 7.36 | 95.21 |
실시예 7 | 7.70 | 6.93 | 90.00 |
실시예 8 | 7.68 | 6.70 | 87.25 |
실시예 9 | 7.70 | 7.19 | 93.46 |
실시예 10 | 7.70 | 7.35 | 95.58 |
실시예 11 | 7.68 | 7.17 | 93.29 |
실시예 12 | 7.67 | 7.32 | 95.36 |
실시예 13 | 7.70 | 7.27 | 94.44 |
실시예 14 | 7.69 | 7.37 | 95.77 |
실시예 15 | 7.67 | 6.98 | 90.94 |
실시예 16 | 7.65 | 7.17 | 93.70 |
조성 | ASR (mΩ.cm2) |
실시예 1 | 7.04 |
실시예 2 | 1.71 |
실시예 3 | 5.64 |
실시예 4 | 3.75 |
실시예 5 (micro La2O3 이용) | 1.95 |
실시예 6 (micro La2O3 이용) | 1.80 |
실시예 7 (micro La2O3 이용) | 2.40 |
실시예 8 (micro La2O3 이용) | 1.78 |
실시예 5 (nano La2O3 이용) | 0.87 |
실시예 6 (nano La2O3 이용) | 27.15 |
실시예 7 (nano La2O3 이용) | 8.51 |
실시예 8 (nano La2O3 이용) | 1.05 |
실시예 9 | 3.73 |
실시예 10 | 30.26 |
실시예 11 | 9.79 |
실시예 12 | 8.02 |
실시예 13 | 17.65 |
실시예 14 | 6.42 |
실시예 15 | 14.78 |
실시예 16 | 21.84 |
조성 | 무게 (g) | |
초기 | 5 Cycle | |
비교예 1 (1) | 0.77 | 0.77 |
비교예 1 (2) | 0.92 | 0.92 |
비교예 1 (3) | 1.39 | 1.40 |
실시예 12 (1) | 0.73 | 0.72 |
실시예 12 (2) | 0.66 | 0.68 |
실시예 12 (3) | 0.63 | 0.64 |
Claims (15)
- Fe-Cr 페라이트계 강 분말 및 LSM((La0.80Sr0.20)0.95MnO3-x), La2O3, CeO2 및 LaCrO3로 이루어진 군에서 선택되는 첨가 원소 분말을 건조 분쇄하고 혼합하는 단계 (S1 단계);
상기 S1 단계에서 제조된 혼합 분말을 용매와 결합제를 혼합하여 볼 밀링하여 슬러리를 제조하는 단계 (S2 단계);
상기 S2 단계에서 제조된 슬러리를 건조시켜 제조한 분말을 가압 성형하여 펠렛을 제조하는 단계 (S3 단계);
상기 펠렛을 냉간 등방압 가압법으로 성형하는 단계 (S4 단계); 및
상기 펠렛을 소결하는 단계 (S5 단계);
를 포함하는 연료전지의 금속 분리판의 제조방법.
- 삭제
- 제 1 항에 있어서,
상기 Fe-Cr 페라이트계 강 분말은 Fe-Cr 페라이트계 SUS430 분말인 것을 특징으로 하는 연료전지의 금속 분리판의 제조방법.
- [청구항 4은(는) 설정등록료 납부시 포기되었습니다.]제 1 항에 있어서,
상기 Fe-Cr 페라이트계 강 분말과 첨가 원소 분말은 90:10 내지 99.99:0.01 중량비로 혼합되는 것을 특징으로 하는 연료전지의 금속 분리판의 제조방법.
- [청구항 5은(는) 설정등록료 납부시 포기되었습니다.]제 1 항에 있어서,
상기 S2 단계에서 제조되는 슬러리는 상기 S1 단계에서 제조된 혼합 분말, 용매 및 결합제를 1 : 1 : 0.01~0.03 의 중량비로 혼합되어 제조되는 것을 특징으로 하는 연료전지의 금속 분리판의 제조방법.
- [청구항 6은(는) 설정등록료 납부시 포기되었습니다.]제 1 항에 있어서,
상기 용매는 이소프로필 알코올 또는 이소프로필 알코올 및 톨루엔의 65:35 중량비의 혼합 용액인 것을 특징으로 하는 연료전지의 금속 분리판의 제조방법.
- 제 1 항에 있어서,
상기 결합제는 폴리비닐 부티랄인 것을 특징으로 하는 연료전지의 금속 분리판의 제조방법.
- [청구항 8은(는) 설정등록료 납부시 포기되었습니다.]제 1 항에 있어서,
상기 S3 단계에서 슬러리는 90~100 ℃의 공기 중에서 건조되는 것을 특징으로 하는 연료전지의 금속 분리판의 제조방법.
- [청구항 9은(는) 설정등록료 납부시 포기되었습니다.]제 1 항에 있어서,
상기 펠렛은 수소 분위기에서 1200~1400 ℃에서 1~10 시간 동안 소결되는 것을 특징으로 하는 연료전지의 금속 분리판의 제조방법.
- Fe-Cr 페라이트계 강 분말 및 LSM((La0.80Sr0.20)0.95MnO3-x), La2O3, CeO2 및 LaCrO3로 이루어진 군에서 선택되는 첨가 원소 분말을 포함한 슬러리를 건조시켜 제조된 연료전지용 금속 분리판.
- 제 10 항에 있어서,
상기 슬러리는 Fe-Cr 페라이트계 강 분말 및 LSM((La0.80Sr0.20)0.95MnO3-x), La2O3, CeO2 및 LaCrO3로 이루어진 군에서 선택되는 첨가 원소 분말의 혼합분말, 용매 및 결합제를 1 : 1 : 0.01~0.03 의 중량비로 혼합하여 제조된 것임을 특징으로 하는 연료전지용 금속 분리판.
- 제 10 항에 있어서,
상기 Fe-Cr 페라이트계 강 분말은 상기 Fe-Cr 페라이트계 SUS430 분말인 것을 특징으로 하는 연료전지용 금속 분리판.
- 제 10 항에 있어서,
상기 Fe-Cr 페라이트계 강 분말과 첨가 원소 분말은 90:10 내지 99.99:0.01 중량비로 포함되는 것을 특징으로 하는 연료전지용 금속 분리판.
- Fe-Cr 페라이트계 강 분말 및 LSM((La0.80Sr0.20)0.95MnO3-x), La2O3, CeO2 및 LaCrO3로 이루어진 군에서 선택되는 첨가 원소 분말을 포함한 슬러리를 건조시켜 제조된 연료전지용 금속 분리판을 포함하는 고체산화물 연료전지.
- Fe-Cr 페라이트계 강 분말 및 LSM((La0.80Sr0.20)0.95MnO3-x), La2O3, CeO2 및 LaCrO3로 이루어진 군에서 선택되는 첨가 원소 분말을 포함한 슬러리를 건조시켜 제조된 연료전지용 금속 분리판을 포함하는 고체산화물 전해셀.
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