TY - JOUR
T1 - Pyrolysis-Free Oxygen Reduction Reaction (ORR) Electrocatalysts Composed of Unimolecular Layer Metal Azaphthalocyanines Adsorbed onto Carbon Materials
AU - Yabu, Hiroshi
AU - Nakamura, Koki
AU - Matsuo, Yasutaka
AU - Umejima, Yutaro
AU - Matsuyama, Haruyuki
AU - Nakamura, Jun
AU - Ito, Koju
N1 - Funding Information:
H.Y. would like to thank NEDO (No. 2020-0115004) and KAKENHI, JSPS (Nos. 18H05482, 19KK0357, and 20H04625) for financial support. This work was supported in part by the “Five-Star-Alliance” and by the Cooperative Research Program of “NJRC Mater. & Dev,” MEXT, Japan. J.N. would like to thank JST, CREST Grant number JPMRCR12L1, Japan.
Publisher Copyright:
© 2021 The Authors. Published by American Chemical Society.
PY - 2021/12/27
Y1 - 2021/12/27
N2 - 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.
AB - 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.
KW - density functional theory (DFT) calculations
KW - electrocatalysts
KW - ionization potential
KW - metal azaphthalocyanines
KW - oxygen reduction reaction (ORR)
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U2 - 10.1021/acsaem.1c03054
DO - 10.1021/acsaem.1c03054
M3 - Article
AN - SCOPUS:85121578278
SN - 2574-0962
VL - 4
SP - 14380
EP - 14389
JO - ACS Applied Energy Materials
JF - ACS Applied Energy Materials
IS - 12
ER -