KR101978952B1 - 반응방지막을 포함하는 고온 고체산화물 셀, 이의 제조방법 - Google Patents
반응방지막을 포함하는 고온 고체산화물 셀, 이의 제조방법 Download PDFInfo
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- KR101978952B1 KR101978952B1 KR1020160169310A KR20160169310A KR101978952B1 KR 101978952 B1 KR101978952 B1 KR 101978952B1 KR 1020160169310 A KR1020160169310 A KR 1020160169310A KR 20160169310 A KR20160169310 A KR 20160169310A KR 101978952 B1 KR101978952 B1 KR 101978952B1
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- CETPSERCERDGAM-UHFFFAOYSA-N ceric oxide Chemical compound O=[Ce]=O CETPSERCERDGAM-UHFFFAOYSA-N 0.000 claims abstract description 41
- 229910000422 cerium(IV) oxide Inorganic materials 0.000 claims abstract description 41
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- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims description 12
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- FZLIPJUXYLNCLC-UHFFFAOYSA-N lanthanum atom Chemical compound [La] FZLIPJUXYLNCLC-UHFFFAOYSA-N 0.000 claims description 9
- 239000000126 substance Substances 0.000 claims description 9
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- 229910052772 Samarium Inorganic materials 0.000 claims description 6
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- KZUNJOHGWZRPMI-UHFFFAOYSA-N samarium atom Chemical compound [Sm] KZUNJOHGWZRPMI-UHFFFAOYSA-N 0.000 claims description 6
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- 229910052802 copper Inorganic materials 0.000 claims description 3
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- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 4
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- 238000012360 testing method Methods 0.000 description 4
- 239000004471 Glycine Substances 0.000 description 3
- 239000003054 catalyst Substances 0.000 description 3
- UFMZWBIQTDUYBN-UHFFFAOYSA-N cobalt dinitrate Chemical compound [Co+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O UFMZWBIQTDUYBN-UHFFFAOYSA-N 0.000 description 3
- 229910001981 cobalt nitrate Inorganic materials 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
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- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 2
- QQZMWMKOWKGPQY-UHFFFAOYSA-N cerium(3+);trinitrate;hexahydrate Chemical compound O.O.O.O.O.O.[Ce+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O QQZMWMKOWKGPQY-UHFFFAOYSA-N 0.000 description 2
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- GNFTZDOKVXKIBK-UHFFFAOYSA-N 3-(2-methoxyethoxy)benzohydrazide Chemical compound COCCOC1=CC=CC(C(=O)NN)=C1 GNFTZDOKVXKIBK-UHFFFAOYSA-N 0.000 description 1
- SMZUROGBNBCCPT-UHFFFAOYSA-N 5-bromo-6-chloro-1h-indole Chemical compound C1=C(Br)C(Cl)=CC2=C1C=CN2 SMZUROGBNBCCPT-UHFFFAOYSA-N 0.000 description 1
- FGUUSXIOTUKUDN-IBGZPJMESA-N C1(=CC=CC=C1)N1C2=C(NC([C@H](C1)NC=1OC(=NN=1)C1=CC=CC=C1)=O)C=CC=C2 Chemical compound C1(=CC=CC=C1)N1C2=C(NC([C@H](C1)NC=1OC(=NN=1)C1=CC=CC=C1)=O)C=CC=C2 FGUUSXIOTUKUDN-IBGZPJMESA-N 0.000 description 1
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
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- 241000968352 Scandia <hydrozoan> Species 0.000 description 1
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- 239000000919 ceramic Substances 0.000 description 1
- 239000013025 ceria-based material Substances 0.000 description 1
- WWIKWTYVPCCWSB-UHFFFAOYSA-N cerium(3+) trinitrate heptahydrate Chemical compound O.O.O.O.O.O.O.[N+](=O)([O-])[O-].[Ce+3].[N+](=O)([O-])[O-].[N+](=O)([O-])[O-] WWIKWTYVPCCWSB-UHFFFAOYSA-N 0.000 description 1
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- HJGMWXTVGKLUAQ-UHFFFAOYSA-N oxygen(2-);scandium(3+) Chemical compound [O-2].[O-2].[O-2].[Sc+3].[Sc+3] HJGMWXTVGKLUAQ-UHFFFAOYSA-N 0.000 description 1
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- H01M8/10—Fuel cells with solid electrolytes
- H01M8/12—Fuel cells with solid electrolytes operating at high temperature, e.g. with stabilised ZrO2 electrolyte
- H01M8/1213—Fuel cells with solid electrolytes operating at high temperature, e.g. with stabilised ZrO2 electrolyte characterised by the electrode/electrolyte combination or the supporting material
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- H01M8/12—Fuel cells with solid electrolytes operating at high temperature, e.g. with stabilised ZrO2 electrolyte
- H01M8/124—Fuel cells with solid electrolytes operating at high temperature, e.g. with stabilised ZrO2 electrolyte characterised by the process of manufacturing or by the material of the electrolyte
- H01M8/1246—Fuel cells with solid electrolytes operating at high temperature, e.g. with stabilised ZrO2 electrolyte characterised by the process of manufacturing or by the material of the electrolyte the electrolyte consisting of oxides
- H01M8/126—Fuel cells with solid electrolytes operating at high temperature, e.g. with stabilised ZrO2 electrolyte characterised by the process of manufacturing or by the material of the electrolyte the electrolyte consisting of oxides the electrolyte containing cerium oxide
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- H01M4/90—Selection of catalytic material
- H01M4/9016—Oxides, hydroxides or oxygenated metallic salts
- H01M4/9025—Oxides specially used in fuel cell operating at high temperature, e.g. SOFC
- H01M4/9033—Complex oxides, optionally doped, of the type M1MeO3, M1 being an alkaline earth metal or a rare earth, Me being a metal, e.g. perovskites
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- H01M8/1246—Fuel cells with solid electrolytes operating at high temperature, e.g. with stabilised ZrO2 electrolyte characterised by the process of manufacturing or by the material of the electrolyte the electrolyte consisting of oxides
- H01M8/1253—Fuel cells with solid electrolytes operating at high temperature, e.g. with stabilised ZrO2 electrolyte characterised by the process of manufacturing or by the material of the electrolyte the electrolyte consisting of oxides the electrolyte containing zirconium oxide
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Abstract
Description
도 2는 본 발명의 고체산화물 셀의 제조방법을 순차적으로 나타낸 흐름도이다.
도 3은 (a) 비교예 2의 반응방지막, (b) 소자비교예 2의 고체산화물 셀의 SEM 이미지, (c) 소자비교예 2의 고체산화물 셀의 TEM 이미지, (d) 소자비교예 2의 고체산화물 셀의 SEM 이미지를 나타낸 것이다.
도 4는 (a) 비교예 1, (b) 비교예 3에 따라 제조된 반응방지막, 및 (c) 소자비교예 3에 따라 제조된 고체산화물 셀의 측면 SEM 이미지이다.
도 5는 (a) 비교예 2, (b) 비교예 4, (c) 비교예 5 및 (d) 실시예 1에 따라 제조된 반응방지막의 측단면 SEM 이미지이다.
도 6은 비교예 7에 따라 제조된 반응방지막의 측단면 SEM 이미지이다.
도 7은 비교예 6에 따라 제조된 반응방지막의 측단면 SEM 이미지이다.
도 8은 비교예 1과 실시예 1에 따라 제조된 반응방지막의 이미지를 나타낸 것이다.
도 9는 소자실시예 1과 소자비교예 1에 따라 제조된 고체산화물 셀의 장기 평가 결과를 나타낸 것이다.
도 10은 소자실시예 1과 소자비교예 1에 따라 제조된 고체산화물 셀의 장기 평가 후의 구조 및 화학분석 결과를 나타낸 것이다.
성분 | 함량(g) |
GDC 조대분말 | 14 |
D.I water | 100 |
KD6 | 0.42 |
성분 | 함량(g) |
질산세륨 6수화물 | 13.625 |
질산가돌리늄 6수화물 | 1.575 |
글리신 | 4.318 |
탈이온수 | 60 |
성분 | 함량(g) |
조대 GDC 분말 | 14 |
D.I water | 100 |
KD6 | 0.42 |
성분 | 함량(g) |
Cerium nitrate hexahydrate | 13.625 |
Gadolinium nitrate hexahydrate | 1.575 |
Cobalt nitrate | 1.008 |
Glycine | 4.604 |
D.I water | 60 |
성분 | 함량(g) |
제조예 1의 GDC 분말 | 8.00 |
α-테르피네올 | 7.27 |
KD6 | 0.24 |
BH3 | 0.40 |
DBP | 0.15 |
성분 | 함량(g) |
GDC | 8.00 |
α-테르피네올 | 7.27 |
KD6 | 0.24 |
BH3 | 0.40 |
DBP | 0.15 |
성분 | 함량(g) |
LSCF | 25.00 |
α-테르피네올 | 16.00 |
KD6 | 0.25 |
BH3 | 0.50 |
DBP | 0.25 |
성분 | 함량(g) |
LSCF | 12.50 |
GDC | 12.50 |
α-테르피네올 | 16.00 |
KD6 | 0.50 |
BH3 | 0.50 |
DBP | 0.32 |
Claims (22)
- 연료극층, 전해질층 및 공기극층을 포함하는 고체산화물 셀에 있어서,
상기 공기극층과 전해질층 사이에 반응방지막을 포함하고,
상기 반응방지막은,
상기 전해질층 상에 형성되고, 소결 조제를 포함하지 않은 세리아계 금속산화물이 소결된 것을 포함하는 제1 반응방지막; 및
상기 제1 반응방지막 상에 형성되고, 세리아계 금속산화물 및 소결 조제가 혼합되어 소결된 것을 포함하는 제2 반응방지막;을 포함하고,
상기 제1 반응방지막은 세리아계 금속산화물의 나노분말과 조대분말이 혼합되어 소결된 것을 포함하고,
상기 제2 반응방지막은 세리아계 금속산화물의 나노분말과 조대분말이 소결 조제와 혼합되어 소결된 것을 포함하고,
상기 세리아계 금속산화물의 나노분말은 평균직경이 10 내지 50nm이고,
상기 세리아계 금속산화물의 조대분말은 평균직경이 100nm 내지 1㎛이고,
상기 제1 반응방지막 및 제2 반응방지막은 1000 내지 1250℃의 온도에서 동시에 소결된 것인, 고체산화물 셀. - 제1항에 있어서,
상기 나노분말이 소결된 것은 제1 반응방지막의 총 중량에 대하여 5 내지 50wt% 함량으로 포함되는 것을 특징으로 하는 고체산화물 셀. - 제1항에 있어서,
상기 세리아계 금속산화물은 가돌리늄(Gd), 사마륨(Sm), 이트륨(Y) 및 란탄(La)으로 중에서 선택된 1종 이상인 세리아계 금속산화물인 것을 특징으로 하는 고체산화물 셀. - 제1항에 있어서,
상기 세리아계 금속산화물은 하기 화학식 1로 표시되는 것을 특징으로 하는 고체산화물 셀.
[화학식 1]
LnxCe1 - xO2 -0.5x
상기 화학식 1에서,
Ln은 가돌리늄(Gd), 사마륨(Sm), 이트륨(Y) 및 란탄(La) 중에서 선택된 어느 하나이고,
x는 0<x=0.4이다. - 제1항에 있어서,
상기 소결조제는 Co, Fe, Ni, Zn, Cu, Mn 및 Li 중에서 선택된 1종 이상 또는 그의 산화물인 것을 특징으로 하는 고체산화물 셀. - 제1항에 있어서,
상기 소결조제는 상기 제2 반응방지막의 총 중량에 대하여 0.05 내지 5wt%의 함량으로 포함되는 것을 특징으로 하는 고체산화물 셀. - 제1항에 있어서,
상기 공기극층은 페로브스카이트 구조인 것을 특징으로 하는 고체산화물 셀. - 제7항에 있어서,
상기 공기극층은 란탄(La), 코발트(Co) 및 철(Fe) 중에서 선택된 1종 이상인 것을 특징으로 하는 고체산화물 셀. - 제1항에 있어서,
상기 전해질층은 지르코니아계 금속산화물인 것을 특징으로 하는 고체산화물 셀. - 삭제
- 제1항에 있어서,
상기 제1 반응방지막 또는 제2 반응방지막의 두께는 1 내지 10㎛인 것을 특징으로 하는 고체산화물 셀. - 제1항에 있어서,
상기 공기극층은 상기 제2 반응방지막 상에 형성되는 공기극 기능층 및 상기 공기극 기능층 상에 형성되는 공기극 집전층을 포함하는 것을 특징으로 하는 고체산화물 셀 - (a) 연료극 지지체를 준비하는 단계;
(b) 상기 연료극 지지체 상에 전해질층을 도포하는 단계;
(c) 상기 연료극 지지체와 전해질층을 동시에 소결하는 단계;
(d) 상기 전해질층 상에 세리아계 금속산화물의 나노분말과 조대분말을 포함하는 페이스트를 코팅하여 제1 코팅층을 형성하는 단계;
(e) 상기 제1 코팅층 상에 세리아계 금속산화물의 나노분말과 조대분말, 및 소결조제를 포함하는 혼합 페이스트를 코팅하여 제2 코팅층을 형성하는 단계;
(f) 상기 제1 코팅층과 제2 코팅층을 1000 내지 1250℃의 온도에서 동시에 소결하여 제1 반응방지막 및 상기 제1 반응방지막 상에 형성된 제2 반응방지막을 포함하는 이중 층의 반응방지막을 제조하는 단계; 및
(g) 상기 이중 층의 반응방지막 상에 공기극층을 형성하는 단계;를 포함하고,
상기 세리아계 금속산화물의 나노분말은 평균직경이 10 내지 50nm이고,
상기 세리아계 금속산화물의 조대분말은 평균직경이 100nm 내지 1㎛인, 고체산화물 셀의 제조방법. - 제13항에 있어서,
상기 나노분말은 제1 코팅층의 총 중량에 대하여 5 내지 50wt% 함량으로 포함되는 것을 특징으로 하는 고체산화물 셀의 제조방법. - 삭제
- 삭제
- 제13항에 있어서,
단계 (a) 이후, 상기 연료극 지지체에 상에 연료극 기능층을 형성하는 단계;를 추가로 포함하는 것을 특징으로 하는 고체산화물 셀의 제조방법. - 삭제
- 제13항에 있어서,
상기 나노분말은 제2 코팅층의 총 중량에 대하여 5 내지 50wt% 함량으로 포함되는 것을 특징으로 하는 고체산화물 셀의 제조방법. - 제13항에 있어서,
상기 소결조제는 상기 제2 코팅층의 총 중량에 대하여 0.05 내지 5wt%의 함량으로 포함되는 것을 특징으로 하는 고체산화물 셀의 제조방법. - 삭제
- 제13항에 있어서,
단계 (g)은 상기 제2 반응방지막 상에 공기극 기능층을 형성한 후, 상기 공기극 기능층 상에 공기극 집전층을 형성하는 것을 특징으로 하는 고체산화물 셀의 제조방법.
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