Hard-templated preparation of mesoporous cobalt phosphide as an oxygen evolution electrocatalyst

Peng Mei; Yusuke Yamauchi; Malay Pramanik; Amanullah Fatehmulla; Abdullah M. Adhafiri; W. Aslam Farooq; Yoshio Bando; Muhammad J.A. Shiddiky; Yusuf Valentino Kaneti; Jianjian Lin; Yena Kim

Electrochemistry Communications (Jul 2019)

Hard-templated preparation of mesoporous cobalt phosphide as an oxygen evolution electrocatalyst

Peng Mei,
Yusuke Yamauchi,
Malay Pramanik,
Amanullah Fatehmulla,
Abdullah M. Adhafiri,
W. Aslam Farooq,
Yoshio Bando,
Muhammad J.A. Shiddiky,
Yusuf Valentino Kaneti,
Jianjian Lin,
Yena Kim

Affiliations

Peng Mei: Hubei Key Laboratory of Catalysis and Materials Science, School of Chemistry and Materials Science, South-Central University for Nationalities, Wuhan 430074, China
Yusuke Yamauchi: Key Laboratory of Eco-Chemical Engineering, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, China; International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan; School of Chemical Engineering and Australian Institute for Bioengineering and Nanotechnology (AIBN), The University of Queensland, Brisbane, QLD 4072, Australia; Department of Plant & Environmental New Resources, Kyung Hee University, 1732 Deogyeong-daero, Giheung-gu, Yongin-si, Gyeonggi-do 446-701, Republic of Korea; Corresponding author at: Y. Yamauchi, School of Chemical Engineering and Australian Institute for Bioengineering and Nanotechnology (AIBN), The University of Queensland, Brisbane, QLD 4072, Australia. J. Lin and Y. Kim, Key Laboratory of Eco-Chemical Engineering, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
Malay Pramanik: International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
Amanullah Fatehmulla: Department of Physics and Astronomy, College of Science, P.O. Box 2455, King Saud University, 11451 Riyadh, Saudi Arabia
Abdullah M. Adhafiri: Department of Physics and Astronomy, College of Science, P.O. Box 2455, King Saud University, 11451 Riyadh, Saudi Arabia
W. Aslam Farooq: Department of Physics and Astronomy, College of Science, P.O. Box 2455, King Saud University, 11451 Riyadh, Saudi Arabia
Yoshio Bando: International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
Muhammad J.A. Shiddiky: Queensland Micro and Nanotechnology Centre and School of Environment and Sciences, Griffith University, QLD 4111, Australia
Yusuf Valentino Kaneti: International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
Jianjian Lin: Key Laboratory of Eco-Chemical Engineering, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, China; Corresponding author at: Y. Yamauchi, School of Chemical Engineering and Australian Institute for Bioengineering and Nanotechnology (AIBN), The University of Queensland, Brisbane, QLD 4072, Australia. J. Lin and Y. Kim, Key Laboratory of Eco-Chemical Engineering, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
Yena Kim: Key Laboratory of Eco-Chemical Engineering, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, China; International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan; Corresponding author at: Y. Yamauchi, School of Chemical Engineering and Australian Institute for Bioengineering and Nanotechnology (AIBN), The University of Queensland, Brisbane, QLD 4072, Australia. J. Lin and Y. Kim, Key Laboratory of Eco-Chemical Engineering, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, China

Journal volume & issue: Vol. 104

Abstract

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Herein, we examine the application of mesoporous cobalt phosphide (meso-CoP) prepared by a hard-templating method as a novel non-precious electrocatalyst for the oxygen evolution reaction (OER). The obtained meso-CoP exhibits a relatively low overpotential (0.30 V at 10 mA cm−2), a decent Tafel slope (81 mV dec−1), and good long-term stability, performing better than its bulk counterpart and many state-of-the-art Co-based OER electrocatalysts. The high electrocatalytic performance of the meso-CoP toward OER is attributed to two key factors: (1) a large accessible active surface which endows the meso-CoP with numerous active sites for water oxidation; (2) a well-organized mesoporous structure which expedites the electron/ion transfer and mass transport, thereby significantly enhancing the OER kinetics. This work will provide guidance for designing inexpensive high-performance electrocatalysts with exquisite mesostructures for potential applications in commercial water-splitting technology. Keywords: Mesoporous cobalt phosphide, Hard template, Water splitting, Electrocatalyst, Oxygen evolution reaction

Published in Electrochemistry Communications

ISSN: 1388-2481 (Print); 1873-1902 (Online)
Publisher: Elsevier
Country of publisher: United States
LCC subjects: Technology: Chemical technology: Industrial electrochemistry; Science: Chemistry
Website: https://www.journals.elsevier.com/electrochemistry-communications

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