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New Catalyst replaceable platinum for electric-automobiles (sic)
http://www.unist.ac.kr/board/view.sko?boardId=Notice&boardSid=5037&menuCd=AB07002001000&contentsSid=8297&orderBy=register_dt&startPage=1&dataSid=1844575[font face=Serif][font size=5]New Catalyst replaceable platinum for electric-automobiles[/font]
Eunhee Song | 2013/07/03
[font size=4] Affordable and scalable process of a carbon nanotube-based catalyst outperforming platinum for electric-automobiles[/font]
[font size=3]…
The research team designed a new class of ORR catalysts using pyridine-functionalized carbon nanotubes (CNTs) to anchor FePc molecules and provide the axial ligand for the iron centre. At the same time, the CNTs provide an easy pathway for fast electron transfer from the current collector to the ORR active sites.
The resulting material, bio-inspired FePc-Py-CNTs catalyst has shown outstanding durability and electrocatalytic activity for ORR in an alkaline media, offering better performance than a commercial Pt/C catalyst. Compared to other unpyrilysed metal macrocycles catalysts, this bio inspired FePc-Py-CNTs catalyst has achieved a much longer cycle life, reaching more than 1,000 cycles in a durability test.
“I believe the FePc-Py-CNTs catalysts is a technologically promising candidate for practical applications in metal-air batteries and alkaline fuel cells,” said Prof. Cho. “The origin of the enhanced performance for this bio-inspired catalysts in aromatic macrocycle, provides important insight into rational design of metal macrocycles catalysts for other applications such as solar harvesting and catalysts for other redox reactions.”
…[/font][/font]
http://dx.doi.org/10.1038/ncomms3076Eunhee Song | 2013/07/03
Structures of Li-ion battery and Zn-air battery (top) and Diagram of synthesis of new catalyst (bottom)
[font size=4] Affordable and scalable process of a carbon nanotube-based catalyst outperforming platinum for electric-automobiles[/font]
[font size=3]…
The research team designed a new class of ORR catalysts using pyridine-functionalized carbon nanotubes (CNTs) to anchor FePc molecules and provide the axial ligand for the iron centre. At the same time, the CNTs provide an easy pathway for fast electron transfer from the current collector to the ORR active sites.
The resulting material, bio-inspired FePc-Py-CNTs catalyst has shown outstanding durability and electrocatalytic activity for ORR in an alkaline media, offering better performance than a commercial Pt/C catalyst. Compared to other unpyrilysed metal macrocycles catalysts, this bio inspired FePc-Py-CNTs catalyst has achieved a much longer cycle life, reaching more than 1,000 cycles in a durability test.
“I believe the FePc-Py-CNTs catalysts is a technologically promising candidate for practical applications in metal-air batteries and alkaline fuel cells,” said Prof. Cho. “The origin of the enhanced performance for this bio-inspired catalysts in aromatic macrocycle, provides important insight into rational design of metal macrocycles catalysts for other applications such as solar harvesting and catalysts for other redox reactions.”
…[/font][/font]
