Developments of high performance/low-cost cathode and hydrogen production Al-Cu alloy for polymer electrolyte membrane fuel cells고분자 전해질 연료 전지용 고성능/저비용 캐소드 및 수소 발생 알루미늄-구리 합금 개발

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Polymer electrolyte membrane fuel cells (PEMFCs) have been considered as one of the most promising energy conversion devices for future due to their high efficiency, and environmental friendly system. However, current manufacturing cost of PEMFCs stack can hardly meet the demands which market allows for large-scale commercialization. Among various components of PEMFCs, electrodes containing Pt. based catalysts account for almost more than half of the stack cost. The development of inexpensive electrode with high performance for reducing Pt. catalysts usage is a key technology to overcome economic problems.And, hydrogen is the most suitable fuel for PEMFCs operation with high energy density. To ensure successful market introduction of PEMFCs, hydrogen supplying infra-system with convenient and safe hydrogen storage and production technology should be established. In spite of various attempts in the past a few decades, current developed methods were not sufficient in terms of capacity or market price for commercial applications. It is important to develop low-priced hydrogen storage and production method with sufficient hydrogen production density. In this study, we have made an attempt to design high performance and low cost catalysts, electrode and hydrogen production material for PEMFCs; development of inexpensive catalysts, optimization of pore structure, and hydrogen production from hydrolysis of aluminum. The first part contains i) synthesis of highly active non-precious metal catalysts to replace precious Pt catalysts in alkaline media. The second part contains ii) optimization of pore structure in the electrode to improve performance of high-temperature PEMFCs. And, the third part contains iii) on-board hydrogen production by hydrolysis from designed Al-Cu alloys for PEMFCs application. Each part adopts common strategy to maximize reaction area by structural modification. 1) Synthesis of highly active non-precious catalysts in alkaline mediaNanoporous co...
Advisors
Kwon, Hyuk-Sangresearcher권혁상
Description
한국과학기술원 : 신소재공학과,
Publisher
한국과학기술원
Issue Date
2013
Identifier
565572/325007  / 020107018
Language
eng
Description

학위논문(박사) - 한국과학기술원 : 신소재공학과, 2013.8, [ xi, 164 p. ]

Keywords

polymer electrolyte fuel cells; 알루미늄-구리 합금; 수소 발생; 기공 구조; 전극; 산소 환원 반응; catalyst; oxygen reduction reaction; electrode; pore structure; hydrogen production; Al-Cu alloy; 고분자 전해질 연료전지; 촉매

URI
http://hdl.handle.net/10203/197329
Link
http://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=565572&flag=dissertation
Appears in Collection
MS-Theses_Ph.D.(박사논문)
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