Development of the combinatorial high-throughput system to investigate highly potential electrocatalysts in fuel cells and Li-air batteries = 조합화학기법을 통한 연료전지 및 메탈-공기 전지의 고활성 촉매 개발

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The search of alternatives to Pt-based catalysts for oxygen reduction reactions (ORRs) in both polymer electrolyte membrane fuel cells (PEMFCs) and Lithium-air batteries (Li-air) were conducted through the combinatorial high-throughput method and the selected non-Pt catalysts were synthesized and characterized. Transition metal-based materials are one of the most widely used heterogeneous catalysts in these systems because of their high activity in many important reactions. However, as the non-Pt based catalysts face issues of lower activity and stability compared to the Pt-based catalysts, various attempts in combination between these non-Pt elements have been studied to overcome issues regarding the commercialization of these devices. Synthesis of the optimized catalysts is however still challenging due to the boundless variations of possible combinations and compositions among the chemical elements. To remedy this issue, the combinatorial high-throughput technology, especially the combinatorial half-cell test and the optical screening, has been developed for efficient and simultaneous assessment of diverse catalyst libraries. Combinatorial optical screening of aprotic electrocatalysts has yet not been achieved primarily due to $H^+$ -associated mechanisms of fluorophore modulation. We have overcome this problem by using fluorophore metal-organic complexes.
Advisors
Woo, Seong Ihlresearcher우성일researcher
Description
한국과학기술원 :생명화학공학과,
Publisher
한국과학기술원
Issue Date
2016
Identifier
325007
Language
eng
Description

학위논문(박사) - 한국과학기술원 : 생명화학공학과, 2016.8 ,[v. 111 p. :]

Keywords

Combinatorial high-throughput screening; optical screening; oxygen reduction reaction; polymer electrolyte membrane fuel cells; Lithium-air batteries; 조합화학기법; 산소환원반응; 고분자 전해질 막 연료전지; 리튬 공기 전지; 비-백금 촉매

URI
http://hdl.handle.net/10203/222164
Link
http://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=663119&flag=dissertation
Appears in Collection
CBE-Theses_Ph.D.(박사논문)
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