Rational Design of Single Atomic Co in CoNx Moieties on Graphene Matrix as an Ultra‐Highly Efficient Active Site for Oxygen Reduction Reaction

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Title: Rational Design of Single Atomic Co in CoNx Moieties on Graphene Matrix as an Ultra‐Highly Efficient Active Site for Oxygen Reduction Reaction
Authors: Shu, Yasuhiro | Miyake, Koji | Quílez-Bermejo, Javier | Zhu, Yexin | Hirota, Yuichiro | Uchida, Yoshiaki | Tanaka, Shunsuke | Morallon, Emilia | Cazorla-Amorós, Diego | Kong, Chang Yi | Nishiyama, Norikazu
Research Group/s: Electrocatálisis y Electroquímica de Polímeros | Materiales Carbonosos y Medio Ambiente
Center, Department or Service: Universidad de Alicante. Departamento de Química Física | Universidad de Alicante. Departamento de Química Inorgánica | Universidad de Alicante. Instituto Universitario de Materiales
Keywords: Graphene | Single atom | Oxygen reduction reaction
Knowledge Area: Química Física | Química Inorgánica
Issue Date: Feb-2020
Publisher: Wiley-VCH Verlag GmbH & Co. KGaA
Citation: ChemNanoMat. 2020, 6(2): 218-222. doi:10.1002/cnma.201900597
Abstract: The sharp increase in current energy consumption needs the development of fuel cells (FCs) as one of sustainable, renewable, efficient and eco‐friendly electrochemical conversion systems of energy. The performance of electrocatalysts is crucially important for commercialization of FCs. Commercial Pt based catalysts are used due to their high catalytic activity. However, widespread commercialization is impossible because of the scarcity and poor durability of Pt based catalysts. We are on our quest to find a more stable and affordable alternative catalyst of Pt based catalysts. In particular, single‐atom catalysts supported on graphene are greatly attractive because of their unique characteristic and high catalytic activity. In this work, graphene is hydrothermally treated by sulfuric acid to introduce the ion‐exchanging sites. Then, Co2+ ion‐exchanging, 2‐methylimidazole coordination and pyrolysis process are subsequently conducted to prepare highly‐dispersed single‐atom Co species catalyst with outstanding ORR activity and durability. This work presents a new direction for a rational design of single‐atom catalyst on carbon matrix.
Sponsor: We would like to thank MICIINUN and FEDER for financial support (Project RTI2018-095291-B-I00).
URI: http://hdl.handle.net/10045/102690
ISSN: 2199-692X
DOI: 10.1002/cnma.201900597
Language: eng
Type: info:eu-repo/semantics/article
Rights: © 2020 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim
Peer Review: si
Publisher version: https://doi.org/10.1002/cnma.201900597
Appears in Collections:INV - GEPE - Artículos de Revistas
INV - MCMA - Artículos de Revistas

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