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Nitrogen-Doped Hierarchical Porous Carbon Architecture Incorporated with Cobalt Nanoparticles and Carbon Nanotubes as Efficient Electrocatalyst for Oxygen Reduction Reaction

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Please use this identifier to cite or link to this item:http://hdl.handle.net/2115/71637

Title: Nitrogen-Doped Hierarchical Porous Carbon Architecture Incorporated with Cobalt Nanoparticles and Carbon Nanotubes as Efficient Electrocatalyst for Oxygen Reduction Reaction
Authors: Zhu, Chunyu Browse this author →KAKEN DB
Kim, Cheong Browse this author
Aoki, Yoshitaka Browse this author →KAKEN DB
Habazaki, Hiroki Browse this author →KAKEN DB
Keywords: carbon nanotubes
cobalt
combustion synthesis
oxygen reduction reaction
porous carbon
Issue Date: 9-Oct-2017
Publisher: John Wiley & Sons
Journal Title: Advanced Materials Interfaces
Volume: 4
Issue: 19
Start Page: 1700583
Publisher DOI: 10.1002/admi.201700583
Abstract: Hierarchical porous carbon has attracted great interest because of its distinctive structure and superior properties for designing electrochemical energy storage and conversion devices. In this work, a novel method to fabricate nitrogen-doped hierarchical porous carbon (NHPC) is reported, which is incorporated with Co nanoparticles and carbon nanotubes (CNTs). The NHPC is prepared using a facile and scalable MgO-Co template method. Metal nitrate-glycine solution combustion synthesis, followed by a high temperature calcination, is used to prepare MgO-Co/N-doped carbon precursor. CNTs are formed by the in situ Co-catalytic growth during heat treatment; at the same time, localized graphitic layers are also formed around the Co nanoparticles. After acid washing, NHPC with hierarchical multipores and ultrafine Co nanoparticles is obtained. When applied as oxygen reduction reaction (ORR) catalyst, the NHPC displays high catalytic activity not only in terms of onset potential and current density, but also superior durability and tolerance to methanol crossover in alkaline electrolyte. The remarkable ORR activity is originated from the cooperative effects of high specific surface area, hierarchical pore structure, ultrasmall Co nanocrystals, localized graphitic layers, CNTs, and N-doping.
Rights: This is the peer reviewed version of the following article: Advanced Materials Interfaces 4(19) October 9, 2017 1700583, which has been published in final form at http://onlinelibrary.wiley.com/doi/10.1002/admi.201700583/abstract. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving.
Type: article (author version)
URI: http://hdl.handle.net/2115/71637
Appears in Collections:工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 朱 春宇

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