(A) study on oxide-based supports for enhancing activity and stability of electrochemical catalyst in PEMWE고분자 전해질 막 수전해용 촉매의 성능 및 내구성 향상을 위한 산화물 기반 담지체 개발 연구

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dc.contributor.advisorCho, EunAe-
dc.contributor.authorKim, Eom-Ji-
dc.description학위논문(박사) - 한국과학기술원 : 신소재공학과, 2021.2,[viii, 112 p. :]-
dc.description.abstractPolymer electrolyte membrane water electrolysis(PEMWE) is a promising technology to solve the energy intermittency of renewable energy sources due to its fast response and wide load range. However, high prices of iridium(Ir) catalyst which is used for anode catalyst toward oxygen evolution reaction (OER), hampers commercialization of PEMWE. Therefore, catalyst development is required to reduce the use of Ir without degradation of cell performance. The introduction of support can effectively reduce the use of Ir by increasing its utilization efficiency. Oxide support is a highly corrosion-resistant material suitable for use in the anode, but it interferes with the transfer of electrons during the OER due to low electrical conductivity, thus degrading the performance of catalysts. In this paper, two strategies to increase the conductivity of oxide-based support were proposed : (1) stable dopant and (2) introduction of a conductive carbon nanotube. To demonstrate the utility of prepared support, the electrochemical performance of the supported-catalyst was verified. Furthermore, the analysis of the physical and chemical structure of the support and catalyst was conducted, and then the factors affecting the performance improvement of the catalyst, thereby improving the performance and durability of the supported catalyst.-
dc.subjectpolymer electrolyte membrane water electorlysis▼aoxygen evolution reaction▼aoxide support▼asupported catalyst▼airidium catalyst-
dc.subject고분자전해질막수전해▼a산소발생반응▼a산화물 담지체▼a담지촉매▼a이리듐 촉매-
dc.title(A) study on oxide-based supports for enhancing activity and stability of electrochemical catalyst in PEMWE-
dc.title.alternative고분자 전해질 막 수전해용 촉매의 성능 및 내구성 향상을 위한 산화물 기반 담지체 개발 연구-
dc.description.department한국과학기술원 :신소재공학과,-
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