The robust catalysts (Ni1-x-Mo-x/doped ceria and Zn1-x-Mo-x/doped ceria, x=0.1 and 0.3) for efficient natural gas reforming in solid oxide fuel cells
Artikel i vetenskaplig tidskrift, 2020

Nickel is a promising catalyst in Solid Oxide fuel cell (SOFC) due to its electrocatalytic performance, however, the practical utilization of Ni-based materials is hindered by the undesirable carbon deposition during methane decomposition. Herein, molybdenum is incorporated into the Ni- and Zn-based cermets (Ni1-x-Mo-x/GDC and Zn1-x-Mo-x/GDC, x = 0.1 and 0.3) to enhance electrocatalytic properties and avoid the carbon deposition during cell operation. The desired composites are synthesized by the impregnation method and adopted as anode in SOFCs. The catalytic activity for methane oxidation has been significantly improved due to the introduction on Mo, which hindered the carbon deposition due to higher graphitization and abundant active sites accessible to fuel. The detailed Raman spectroscopy and conductivity analysis revealed that addition of Mo reduced the amount of deposited carbon and enhanced the electrical conductivity. By using natural gas, as a fuel, the as-prepared Mo-doped Ni-GDC rendered a maximum power density of 690 mW cm(-2) at 600 degrees C. It is worth mentioning that the achieved stable power density is one of the best in existing literature. The current study presents a novel strategy to improve the catalytic behavior of electrode materials and demonstrate the optimal performance at low operating temperature. (C) 2020 Elsevier Ltd. All rights reserved.

Carbon deposition

Solid oxide fuel cell

Mo doping

Natural gas

Författare

Amtul Naseer

COMSATS University Islamabad

Murid Hussain

COMSATS University Islamabad

Imran Shakir

King Saud University

University of California at Los Angeles

Qaisar Abbas

Durham University

Duygu Yilmaz

Chalmers, Kemi och kemiteknik, Energi och material, Oorganisk miljökemi 2

Marriam Zahra

COMSATS University Islamabad

Rizwan Raza

Chalmers, Kemi och kemiteknik, Energi och material, Oorganisk miljökemi 2

Electrochimica Acta

0013-4686 (ISSN)

Vol. 361 137033

Ämneskategorier

Oorganisk kemi

Materialkemi

Annan kemiteknik

DOI

10.1016/j.electacta.2020.137033

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Senast uppdaterat

2020-11-23