Facile pyrolysis synthesis of abundant FeCo dual-single atoms anchored on N-doped carbon nanocages for synergistically boosting oxygen reduction reaction.

Autor: Feng R; College of Chemistry and Materials Science, College of Geography and Environmental Sciences, Key laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Normal University, Jinhua, 321004, PR China., Ruan QD; College of Chemistry and Materials Science, College of Geography and Environmental Sciences, Key laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Normal University, Jinhua, 321004, PR China., Feng JJ; College of Chemistry and Materials Science, College of Geography and Environmental Sciences, Key laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Normal University, Jinhua, 321004, PR China., Yao YQ; Zhejiang Provincial Key Laboratory of Robotics and Intelligent Manufacturing Equipment Technology, Ningbo Institute of Material Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, PR China., Li LM; College of Chemistry and Materials Science, College of Geography and Environmental Sciences, Key laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Normal University, Jinhua, 321004, PR China., Zhang L; College of Chemistry and Materials Science, College of Geography and Environmental Sciences, Key laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Normal University, Jinhua, 321004, PR China. Electronic address: zhanglu@zjnu.edu.cn., Wang AJ; College of Chemistry and Materials Science, College of Geography and Environmental Sciences, Key laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Normal University, Jinhua, 321004, PR China. Electronic address: ajwang@zjnu.cn.
Jazyk: angličtina
Zdroj: Journal of colloid and interface science [J Colloid Interface Sci] 2023 Oct 28; Vol. 654 (Pt B), pp. 1240-1250. Date of Electronic Publication: 2023 Oct 28.
DOI: 10.1016/j.jcis.2023.10.134
Abstrakt: Single-atom transition metal-based nitrogen-doped carbon (M-N x -C) is regarded as high-efficiency and cost-effectiveness alternatives to replace noble metal catalysts for oxygen reduction reaction (ORR) in renewable energy storage and conversion devices. In this work, rich FeCo dual-single atoms were efficiently entrapped into N-doped carbon nanocages (FeCo DSAs-NCCs) by simple pyrolysis of the bimetallic precursors doped zeolitic imidazolate framework-8 (ZIF-8), as affirmed by a series of characterizations. The graphitization degree of the N-doping carbon substrate was regulated by modulating the pyrolysis temperature and the types of the metal salts. The typical catalyst substantially improved the alkaline ORR performance, with the onset potential (E onset ) of 0.99 V (vs. RHE) and half-wave potential (E 1/2 ) of 0.88 V (vs. RHE). Ultimately, the catalyst-assembled Zn-air battery possessed a higher open-circuit voltage of 1.501 V, larger power density of 123.7 mW cm -2 , and outstanding durability for 150 h. This study provides a guide on developing ORR catalysts for electrochemical energy conversion and storage technology.
Competing Interests: Declaration of Competing Interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(Copyright © 2023 Elsevier Inc. All rights reserved.)
Databáze: MEDLINE
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