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小木蟲論壇-學術科研互動平臺 » 化學化工區(qū) » 電化學 » 電化資源 » 燃料電池陰極催化劑綜述
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[資源]
燃料電池陰極催化劑綜述
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今年年初，Wiley邀請老板Prof. N. Alonso-Vante寫一篇燃料電池i陰極催化劑綜述，最近在physica status solidi (b) Vol. 245/9/2008, page 1792-1806發(fā)表，這里和大家分享下！！ This review covers the electrocatalytic activities, the corresponding influence factors and the synthesis methods of non-precious metal electrocatalysts towards oxygen reduction reaction (ORR) for fuel cell systems. In particular, the chalcogenides and the macrocycles containing Co or Fe metals have been focused. Due to the price and the high scarcity of Pt metal, the Co- and Fe-based chalcogenides are potentially interesting substitutes of Pt although they still show lower catalytic activities for ORR and lower electrochemical and chemical stability in the present fuel cell electrolytes. Compared to Pt electrocatalysts, the Co- and Fe-based macrocycles, such as TMPP, TPP, Pc and TAA, are among the most promising substitutes for Pt, because of their comparable catalytic activities towards ORR and the higher insensitivity to methanol (in direct methanol fuel cells-DMFC) although they still have some drawbacks, namely lower stability and shorter durability. Novel catalyst synthesis methods, modification techniques of catalyst as well as supporting substrates are expected to be developed in the future to satisfy the requirements of commercial fuel cells. http://home.imhb.cn/indexCF/home ... spx?MSAutoID=133444 [ Last edited by yjfeng2000 on 2008-9-1 at 02:16 ] |
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