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Three sulfur-free polymer binders (ethyl cellulose (EC), polyvinylidene fluoride (PVDF), polyetherimide (PEI)) and sulfur-containing polyethersulfone (PESf) polymer binder were used to fabricate NiO–BaZr_0.1Ce_0.7Y_0.1Yb_0.1O_3−δ (BZCYYb) anode substrates. The overall influence of polymer binder on the anode supports was evaluated. Sulfide impurity in the anode substrate was identified when sulfur-containing PESf was used as the polymer binder. Single cells based on different anode supports were characterized in anode-supported MT-SOFCs with the cell configuration of Ni-BZCYYb anode, BZCYYb proton-conducting electrolyte and La_0.6Sr_0.4Co_0.2Fe_0.8O_3−δ (LSCF)-BZCYYb cathode at 650 °C, 600 °C and 550 °C, using humidified hydrogen as fuel and ambient air as oxidant. MT-SOFCs of the anode fabricated using PEI show maximum power density of 0.45 Wcm⁻², 0.34 Wcm⁻² and 0.23 Wcm⁻² at 650 …