Publication: Effects of Sn doping on the manufacturing, performance and carbon deposition of Ni/ScSZ cells in solid oxide fuel cells
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Date
2020
Authors
Arifin N.A.
Troskialina L.
Shamsuddin A.H.
Steinberger-Wilckens R.
Journal Title
Journal ISSN
Volume Title
Publisher
Elsevier Ltd
Abstract
This work demonstrates the effect of tin (Sn) doping on the manufacturing, electrochemical performance, and carbon deposition in dry biogas-fuelled solid oxide fuel cells (SOFCs). Sn doping via blending in technique alters the rheology of tape casting slurry and increases the Ni/ScSZ anode porosity. In contrast to the undoped Ni/ScSZ cells, where open-circuit voltage (OCV) drops in biogas, Sn�Ni/ScSZ SOFC OCV increases by 3%. The maximum power densities in biogas are 0.116, 0.211, 0.263, and 0.314 W/cm2 for undoped Ni/ScSZ, undoped Ni/ScSZ with 3 wt% pore former, Sn�Ni/ScSZ and Sn�NiScSZ with 1 wt% pore former, respectively. Sn�Ni/ScSZ reduces the effect of the drop in the maximum power densities by 26%�36% with the fuel switch. A 1.28�2.24-fold higher amount of carbon is detected on the Sn�Ni/ScSZ samples despite the better electrochemical performance, which may reflect an enhanced methane decomposition reaction. � 2020 Hydrogen Energy Publications LLC
Description
Biogas; Blending; Carbon; Deposition; Drops; Nickel compounds; Open circuit voltage; Tin; Tin oxides; Carbon deposition; Electrochemical performance; Fuel switches; Maximum power density; Methane decomposition; Pore formers; Solid oxide fuel cells (SOFCs); Tape casting; Solid oxide fuel cells (SOFC)