Exploration of carbon additives to the synthesis of Cu2Mo6S8 structures and their electrocatalytic activity in oxygen reduction reaction

Date

2021-12-01

Author

Sürücü, Gökhan

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Catalytic processes are contemplated as break point in generating alternative and sus-tainable energy platforms. The cathodic oxygen reduction reaction (ORR) is an importantcatalytic system, mainly finding practice in fuel cell and metal-air battery technologies.This work presents the synthesis, structural characterization and electrocatalytic proper-ties of three different Cu2Mo6S8structures as alternative ORR electrocatalysts. The effect ofdifferent carbon additives during synthesis was studied and no positive influence of thecarbon addition was indicated. Our findings show that only the bare Cu2Mo6S8 enhancesthe ORR electro-performance to class with the state-of-the-art ORR catalysts. Excellentstability of 10,000 consecutive ORR cycles, a superior onset potential of 0.894 V and half-wave (E1/2) potential of 0.641 V vs. reversible hydrogen electrode (RHE) increase the note-worthiness of the Cu2Mo6S8electrodes. Aside from experimental investigations, densityfunctional theory calculations deliver profound knowledge on the structural and electronicproperties (electronic band structure, partial density of states and electron density) of Cu2Mo6S8.

Subject Keywords

Chevrel phases , Cu2Mo6S8 , Oxygen reduction reaction, Density functional theory, Lattice dynamic properties

URI

https://hdl.handle.net/11511/95001

Journal

International Journal Of Hydrogen Energy

DOI

https://doi.org/10.1016/j.ijhydene.2021.11.180

Collections

Department of Physics, Article

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Citation Formats

G. Sürücü, “Exploration of carbon additives to the synthesis of Cu2Mo6S8 structures and their electrocatalytic activity in oxygen reduction reaction,” International Journal Of Hydrogen Energy, vol. 46, no. 80, pp. 1–11, 2021, Accessed: 00, 2021. [Online]. Available: https://hdl.handle.net/11511/95001.