KR101381643B1 - 고체산화물 연료전지용 전해질 재료 및 이를 이용한 고체산화물 연료전지용 전해질의 제조방법 - Google Patents
고체산화물 연료전지용 전해질 재료 및 이를 이용한 고체산화물 연료전지용 전해질의 제조방법 Download PDFInfo
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- 239000003792 electrolyte Substances 0.000 title claims abstract description 60
- 239000000446 fuel Substances 0.000 title claims abstract description 54
- 239000007787 solid Substances 0.000 title claims abstract description 42
- 239000002001 electrolyte material Substances 0.000 title claims abstract description 39
- 238000000034 method Methods 0.000 title claims description 11
- 239000011777 magnesium Substances 0.000 claims abstract description 49
- 229910052749 magnesium Inorganic materials 0.000 claims abstract description 16
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims abstract description 15
- 229910052746 lanthanum Inorganic materials 0.000 claims abstract description 12
- 229910052733 gallium Inorganic materials 0.000 claims abstract description 11
- 238000004519 manufacturing process Methods 0.000 claims abstract description 11
- 229910052712 strontium Inorganic materials 0.000 claims abstract description 11
- GYHNNYVSQQEPJS-UHFFFAOYSA-N Gallium Chemical compound [Ga] GYHNNYVSQQEPJS-UHFFFAOYSA-N 0.000 claims abstract description 10
- FZLIPJUXYLNCLC-UHFFFAOYSA-N lanthanum atom Chemical compound [La] FZLIPJUXYLNCLC-UHFFFAOYSA-N 0.000 claims abstract description 10
- CIOAGBVUUVVLOB-UHFFFAOYSA-N strontium atom Chemical compound [Sr] CIOAGBVUUVVLOB-UHFFFAOYSA-N 0.000 claims abstract description 10
- JBQYATWDVHIOAR-UHFFFAOYSA-N tellanylidenegermanium Chemical compound [Te]=[Ge] JBQYATWDVHIOAR-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000000843 powder Substances 0.000 claims description 65
- 239000011701 zinc Substances 0.000 claims description 32
- 238000005245 sintering Methods 0.000 claims description 29
- 239000002245 particle Substances 0.000 claims description 22
- 239000002994 raw material Substances 0.000 claims description 18
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 10
- 229910052725 zinc Inorganic materials 0.000 claims description 10
- 150000002500 ions Chemical class 0.000 claims description 8
- 238000002156 mixing Methods 0.000 claims description 6
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 claims description 4
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 claims description 4
- 229910002651 NO3 Inorganic materials 0.000 claims description 4
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 claims description 4
- 238000010298 pulverizing process Methods 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims description 3
- 230000002194 synthesizing effect Effects 0.000 claims 1
- 239000000919 ceramic Substances 0.000 abstract description 5
- 230000000052 comparative effect Effects 0.000 description 20
- 239000001301 oxygen Substances 0.000 description 18
- 229910052760 oxygen Inorganic materials 0.000 description 18
- -1 oxygen ions Chemical class 0.000 description 16
- 239000000203 mixture Substances 0.000 description 15
- 238000009826 distribution Methods 0.000 description 8
- 239000000463 material Substances 0.000 description 7
- 230000003647 oxidation Effects 0.000 description 7
- 238000007254 oxidation reaction Methods 0.000 description 7
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 6
- 238000002441 X-ray diffraction Methods 0.000 description 6
- 239000013078 crystal Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 238000001354 calcination Methods 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 5
- 238000010248 power generation Methods 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 229910001233 yttria-stabilized zirconia Inorganic materials 0.000 description 5
- 125000004429 atom Chemical group 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 4
- 125000002091 cationic group Chemical group 0.000 description 4
- 239000001257 hydrogen Substances 0.000 description 4
- 229910052739 hydrogen Inorganic materials 0.000 description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- 238000001878 scanning electron micrograph Methods 0.000 description 4
- 239000006104 solid solution Substances 0.000 description 4
- 238000003786 synthesis reaction Methods 0.000 description 4
- 238000000498 ball milling Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 239000002737 fuel gas Substances 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 238000009766 low-temperature sintering Methods 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- 239000002002 slurry Substances 0.000 description 3
- 239000002904 solvent Substances 0.000 description 3
- 229910005191 Ga 2 O 3 Inorganic materials 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- 229910021193 La 2 O 3 Inorganic materials 0.000 description 2
- 241000877463 Lanio Species 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 239000007795 chemical reaction product Substances 0.000 description 2
- 239000011651 chromium Substances 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000002425 crystallisation Methods 0.000 description 2
- 230000008025 crystallization Effects 0.000 description 2
- 239000007772 electrode material Substances 0.000 description 2
- 150000002431 hydrogen Chemical class 0.000 description 2
- 239000003345 natural gas Substances 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- 229910002199 La0.8Sr0.2Ga0.8Mg0.2O2.8 Inorganic materials 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 239000010406 cathode material Substances 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 229910001882 dioxygen Inorganic materials 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000003487 electrochemical reaction Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 239000010416 ion conductor Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000011812 mixed powder Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910002077 partially stabilized zirconia Inorganic materials 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 239000005518 polymer electrolyte Substances 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 238000002407 reforming Methods 0.000 description 1
- 238000004626 scanning electron microscopy Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
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Abstract
Description
도 2는 본 발명의 실시예에 따른 전해질 재료에서 아연 첨가량에 따라 전해질 재료들을 구성하는 분말 입도 분포를 나타낸 그래프이다.
도 3은 본 발명의 실시예에 따른 고체산화물 연료전지용 전해질 재료의 제조방법을 순서에 따라 도시한 순서도이다.
도 4는 비교예와 실시예 1 내지 실시예 5의 X-선 회절 분석 결과이다.
도 5는 비교예와 실시예 2의 소결체의 파단면의 주사전자현미경 사진이다.
도 6은 비교예와 실시예 2의 소결체의 파단면의 주사전자현미경 사진이다.
도 7은 실시예 2의 시편의 표면을 관찰한 주사전자현미경 사진이다.
도 8과 도 9는 각각 비교예와 실시예 2의 결정구조를 알아보기 위하여 X-선 회절분석을 실시한 결과를 나타낸 그래프이다.
도 10은 비교예와 실시예들의 산소 이온 전도도를 측정한 결과를 도시한 그래프이다.
구 분 | 성분 조성 |
비교예 | La0 .8Sr0 .2Ga0 .8Mg0 .2O2 .8 |
실시예1 | La0 .8Sr0 .2Ga0 .8Mg0 .19Zn0 .01O2 .8 |
실시예2 | La0 .8Sr0 .2Ga0 .8Mg0 .18Zn0 .02O2 .8 |
실시예3 | La0 .8Sr0 .2Ga0 .8Mg0 .17Zn0 .03O2 .8 |
실시예4 | La0 .8Sr0 .2Ga0 .8Mg0 .16Zn0 .04O2 .8 |
실시예5 | La0 .8Sr0 .2Ga0 .8Mg0 .15Zn0 .05O2 .8 |
Claims (6)
- 페롭스카이트계 산화물의 화학식(ABO3)을 기반으로 구성되며, A-격자점에는 란탄(La)과 스트론튬(Sr), B-격자점에는 갈륨(Ga)과 마그네슘(Mg)과 아연(Zn) 성분의 조합으로 하기의 화학식과 같이 구성되는 것과, 1,300℃ 이하에서 95% 이상의 소결밀도와 800℃에서 0.1S/cm 이상의 이온 전도도가 확보되는 것을 특징으로 하는 고체산화물 연료전지용 전해질 재료.
<화학식>
La1-xSrxGa1-y-zMgyZnzO2.8
0.1≤x≤0.2
0.15≤y≤0.19
0.01≤z≤0.05
0.8≤(1-y-z)≤0.84
- 삭제
- 란탄(La), 스트론튬(Sr), 갈륨(Ga), 마그네슘(Mg) 및 아연(Zn) 성분을 갖는 분말을 혼합하여 원료분말을 준비하는 단계;
상기에서 준비된 원료분말을 균일하게 혼합하고 설정된 분말입자 크기를 갖도록 분쇄하여 합성하는 단계; 및
상기에서 합성된 원료분말을 설정된 온도에서 소결하는 단계;를 포함하며,
상기 원료분말은,
La1-xSrxGa1-y-zMgyZnzO2.8 (0.1≤x≤0.2, 0.15≤y≤0.19, 0.01≤z≤0.05, 0.8≤(1-y-z)≤0.84)의 조성을 가지는 고체산화물 연료전지용 전해질의 제조방법.
- 삭제
- 청구항 3에 있어서,
상기 소결하는 단계에서,
상기 원료분말을 1200℃~1350℃의 온도에서 소결하는 고체산화물 연료전지용 전해질의 제조방법.
- 청구항 3에 있어서,
상기 원료분말을 준비하는 단계에서,
상기 마그네슘과 상기 아연 성분을 갖는 분말은 비수용성 산화물계, 수용성 질산염계, 수용성 염화물계, 수용성 아세트산염계 분말 중 선택된 1종 이상인 고체산화물 연료전지용 전해질의 제조방법.
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KR20250010892A (ko) | 2023-07-13 | 2025-01-21 | 경상국립대학교산학협력단 | Mg가 도핑된 La0.7Sr0.3-xMgxMnO3 세라믹스 및 그 제조방법 |
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CN115763916A (zh) * | 2022-10-24 | 2023-03-07 | 合肥学院 | 一种Ga、Mg共掺杂磷灰石型硅酸镧固体电解质材料及其制备方法 |
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KR20250010892A (ko) | 2023-07-13 | 2025-01-21 | 경상국립대학교산학협력단 | Mg가 도핑된 La0.7Sr0.3-xMgxMnO3 세라믹스 및 그 제조방법 |
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