Copper‐Modified Covalent Triazine Frameworks as Non‐Noble‐Metal Electrocatalysts for Oxygen Reduction |
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| Authors: | Kazuyuki Iwase Tatsuro Yoshioka Prof. Dr. Shuji Nakanishi Prof. Dr. Kazuhito Hashimoto Dr. Kazuhide Kamiya |
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| Affiliation: | 1. Department of Applied Chemistry, The University of Tokyo, 7‐3‐1 Hongo, Bunkyo‐ku, Tokyo 113‐8656 (Japan);2. Japan Science and Technology Agency (JST) PRESTO, 4‐1‐8 Honcho, Kawaguchi, Saitama 332‐0012 (Japan) (Japan) |
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| Abstract: | The electrochemical oxygen reduction reaction (ORR) is an important cathode reaction of various types of fuel cells. The development of electrocatalysts composed only of abundant elements is a key goal because currently only platinum is a suitable catalyst for ORR. Herein, we synthesized copper‐modified covalent triazine frameworks (CTF) hybridized with carbon nanoparticles (Cu‐CTF/CPs) as efficient electrocatalysts for the ORR in neutral solutions. The ORR onset potential of the synthesized Cu‐CTF/CP was 810 mV versus the reversible hydrogen electrode (RHE; pH 7), the highest reported value at neutral pH for synthetic Cu‐based electrocatalysts. Cu‐CTF/CP also displayed higher stability than a Cu‐based molecular complex at neutral pH during the ORR, a property that was likely as a result of the covalently cross‐linked structure of CTF. This work may provide a new platform for the synthesis of durable non‐noble‐metal electrocatalysts for various target reactions. |
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| Keywords: | copper electrocatalysis fuel cells nanostructures oxygen reduction |
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