Pyrolysis-Free Oxygen Reduction Reaction (ORR) Electrocatalysts Composed of Unimolecular Layer Metal Azaphthalocyanines Adsorbed onto Carbon Materials
Source abstract
Abstract
The oxygen reduction reaction (ORR) at the cathode is one of the critical bottlenecks in the energy conversion process in polymer electrolyte fuel cells (PEFCs) and metal–air batteries. An iron azaphthalocyanine unimolecular layer (Fe-AZUL) adsorbed onto a carbon substrate exhibited high ORR activity as an alternative of Pt supported on carbon black (Pt/C) electrocatalyst. We herein report the synthesis of various AzPc molecules with different peripheral structures and complex metals, as well as measurements of the ORR activities of catalysts containing the synthesized molecules and carbons. The catalytic activities were characterized by electrochemical analysis, density functional theory (DFT) calculations, and measurements of ionization potential (IP) values. From the results, the IP values on Ketjen Black (KB) were found to be one of the significant indicators for high ORR activities, providing a guideline for the development of high-performance electrocatalysts.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Electrocatalysts for Energy Conversion · Fuel Cells and Related Materials · Advanced battery technologies research
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Advanced Institute for Materials Research (WPI-AIMR), 2-1-1, Katahira, Aoba-Ku, Sendai 980-8577, Japan
AZUL Energy Inc., 1-9-1, Ichiban-Cho, Aoba-Ku, Sendai 980-0811, Japan
Institute of Multidisciplinary Research for Advanced Materials (IMRAM), Tohoku University, 2-1-1, Katahira, Aoba-Ku, Sendai 980-8577, Japan
Research Institute for Electronic Science (RIES), N21W10, Kita-Ku, Sapporo 001-0021, Japan
Department of Engineering Science, The University of Electro-Communications (UEC-Tokyo), 1-5-1, Chofugaoka, Chofu, Tokyo 182-8585, Japan
Funding
New Energy and Industrial Technology Development Organization · Ministry of Education, Culture, Sports, Science and Technology · Core Research for Evolutional Science and Technology · Japan Society for the Promotion of Science
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