Li-ion battery and Zn-air battery
Copyright : UNIST
Scientists worldwide are looking for better catalysts which outperforms platinum, costs less and has a simpler production process.
The UNIST research team led by Prof. Jaephil Cho, dean of the Interdisciplinary School of Green Energy, UNIST, demonstrated a new strategy to rationally design inexpensive and durable electrochemical oxygen reduction catalysts for metal-air batteries and fuel cells.
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.
Nature Communications (Title: Promotion of Oxygen reduction by a bio-inspired tethered iron phthalocyanine carbon nanotube-based catalyst).
The Converging Research Centre Program through the Ministry of Education, Science and Technology (MEST), Korea. The Ministry of Science, ICT and Future Planning (MSIP), Korea is also acknowledged
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