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Article

Silver Decorated Reduced Graphene Oxide as Electrocatalyst for Zinc–Air Batteries

1
Department of Chemical Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok 10330, Thailand
2
Department of Energy Technology, University Duisburg-Essen, 47057 Duisburg, Germany
3
Division of Materials Science and Engineering, Faculty of Engineering, Hokkaido University, Hokkaido 060-8628, Japan
4
Institute of Business-Regional Collaborations, Hokkaido University, Hokkaido 001-0021, Japan
5
Research Unit of Advanced Materials for Energy Storage, Chulalongkorn University, Bangkok 10330, Thailand
*
Authors to whom correspondence should be addressed.
Energies 2020, 13(2), 462; https://doi.org/10.3390/en13020462
Received: 3 December 2019 / Revised: 12 January 2020 / Accepted: 14 January 2020 / Published: 17 January 2020
(This article belongs to the Special Issue Electrochemical Energy Conversion and Storage Technologies 2019)
Due to their low cost and very high energy density, zinc–air batteries (ZABs) exhibit high potential for various energy applications. The electrochemical performance of the air-cathode has a decisive impact on the discharge performance of ZABs because the sluggish oxygen reduction reaction (ORR) kinetics increase the overpotential of the air-cathode and hence the performance of ZABs. In this work, reduced graphene oxide decorated with silver nanoparticles (AgNP/rGO) is synthesized using simultaneous reduction of graphene oxide and silver ions. Different amounts of silver loading are examined for the synthesis of AgNP/rGO. The synthesized AgNP/rGO samples are analyzed using a rotating disk electrode in order to investigate ORR activity. Then, the synthesized AgNP/rGO electrocatalyst is applied on a tubular designed zinc–air battery in order to study the performance of the zinc–air battery. Results demonstrate that AgNP/rGO is an efficient and cost-effective ORR electrocatalyst for its practical application in ZABs. View Full-Text
Keywords: oxygen reduction; air cathode; zinc–air battery; silver; graphene; current density oxygen reduction; air cathode; zinc–air battery; silver; graphene; current density
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MDPI and ACS Style

Poolnapol, L.; Kao-ian, W.; Somwangthanaroj, A.; Mahlendorf, F.; Nguyen, M.T.; Yonezawa, T.; Kheawhom, S. Silver Decorated Reduced Graphene Oxide as Electrocatalyst for Zinc–Air Batteries. Energies 2020, 13, 462. https://doi.org/10.3390/en13020462

AMA Style

Poolnapol L, Kao-ian W, Somwangthanaroj A, Mahlendorf F, Nguyen MT, Yonezawa T, Kheawhom S. Silver Decorated Reduced Graphene Oxide as Electrocatalyst for Zinc–Air Batteries. Energies. 2020; 13(2):462. https://doi.org/10.3390/en13020462

Chicago/Turabian Style

Poolnapol, Laksanaporn, Wathanyu Kao-ian, Anongnat Somwangthanaroj, Falko Mahlendorf, Mai T. Nguyen, Tetsu Yonezawa, and Soorathep Kheawhom. 2020. "Silver Decorated Reduced Graphene Oxide as Electrocatalyst for Zinc–Air Batteries" Energies 13, no. 2: 462. https://doi.org/10.3390/en13020462

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