DC Field | Value | Language |
---|---|---|
dc.contributor.advisor | Bae, Joong Myeon | - |
dc.contributor.advisor | 배중면 | - |
dc.contributor.author | Lee, Kunho | - |
dc.contributor.author | 이건호 | - |
dc.date.accessioned | 2018-05-23T19:32:38Z | - |
dc.date.available | 2018-05-23T19:32:38Z | - |
dc.date.issued | 2017 | - |
dc.identifier.uri | http://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=718792&flag=dissertation | en_US |
dc.identifier.uri | http://hdl.handle.net/10203/241720 | - |
dc.description | 학위논문(박사) - 한국과학기술원 : 기계공학과, 2017.8,[vi, 130 p. :] | - |
dc.description.abstract | This dissertation addresses the metal-supported solid oxide fuel cell (SOFC) fabrication process. The main pur-pose of this dissertation is to develop a solution and coating process for depositing a dense electrolyte layer on a porous surface. The metal-supported SOFC fabricated by the solution coating process is also analyzed. The so-lution coating process for depositing a dense layer on a porous surface was experimentally investigated using PVP (polyvinyl pyrrolidine) and nanoparticles. PVP, which has a long coiled-chain structure, can increase solu-tion viscosity and relieve stress, while nanoparticles can control stress and reduce cracks. OCV (open circuit voltage) and SEM (scanning electron microscope) measurements confirmed that the solution-coated layer was dense throughout. Subsequently, studies on fabricating metal-supported SOFCs based on this new concept were conducted. To this end, a perforated Crofer22APU substrate, sol-gel coating and interconnect coating material were applied. Various experiments confirmed that the proposed metal-supported SOFCs were successfully de-veloped. EIS measurements of the fabricated single cell confirmed that a sufficiently dense electrolyte was fab-ricated, with a power density of 230 $mW/cm^2$. Then, to improve the performance of the metal-supported SOFCs, a wet infiltration technique was applied for the anode. Furthermore, the metal hole array was modified to im-prove the fuel supply considering the thermal stress. All the modified components were re-applied to fabricate a metal-supported SOFC. The newly developed fabrication process was successful using the modified compo-nents. The resulting performances were 315 $mW/cm^2$ at 700$\circ C$ and 150 $mW/cm^2$ at $600 \circ C$. Moreover, through measurements of long-term stability, a fully dense electrolyte was successfully fabricated, and the newly de-signed anode operated effectively. Finally, fabrication and evaluation of a large-area cell validated the newly developed fabrication process. | - |
dc.language | eng | - |
dc.publisher | 한국과학기술원 | - |
dc.subject | Solid oxide fuel cell▼ametal-supported solid oxide fuel cell▼asol-gel coating process▼aFEM simulation▼acatalyst wet-infiltration | - |
dc.subject | 고체산화물 연료전지▼a금속지지체형 고체산화물 연료전지▼a솔-젤 코팅 공정▼a유한요소법 시뮬레이션▼a촉매용액 함침법 | - |
dc.title | Study on wet-chemical coating fabrication process to develop metal-supported solid oxide fuel cell | - |
dc.title.alternative | 금속지지체형 고체산화물 연료전지 개발을 위한 용액 코팅 제작 공정에 관한 연구 | - |
dc.type | Thesis(Ph.D) | - |
dc.identifier.CNRN | 325007 | - |
dc.description.department | 한국과학기술원 :기계공학과, | - |
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