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  • 02월 22일 15시 이후 : 초록수정 불가능, 일정확인 및 검색만 가능

Nano-Materials & Nano-Structures for Fuel Cells

등록일
2008년 2월 12일 16시 10분 44초
접수번호
1014
발표코드
금12H2심 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
발표시간
금 14시 : 30분
발표형식
심포지엄
발표분야
무기화학 - Inorganic Compounds for Renewable Energy
저자 및
공동저자
성영은
서울대학교 화학생물공학부,
One of the most significant issues in the development of highly efficient fuel cells involves the design and synthesis of nano-electrode materials and structure which serve to improve the electrocatalytic activity and decrease the amount of noble metal catalyst required. Pt-based alloy or non-Pt-based nanoparticles were synthesized and their properties were characterized by various measurements. According to our analysis, optimized sizes, shapes and structures of nanoparticles were necessary for excellent electrocatalytic activities. In addition, the enhanced activities were caused by the change in the electronic structure and electron and proton transfers. Therefore, materials design of Pt or non-Pt-based electrocatalysts would enable fuel cells to enhance the performance by combining these effects together. Further we designed and fabricated novel nanocomposite electrode structures consisting of metal/metal alloy and oxide using a co-sputtering system with metals and oxides target. The relationship between these nano-electrodes and electrocatalytic activities will be discussed.

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