Ni-Ba0.5Sr0.5Ce0.6Zr0.2Gd0.1Y0.1O3-Delta Anode Composites for Proton Conducting Solid Oxide Fuel Cells (H-SOFCs)

Abstract

In this paper, we report the electrochemical properties of Ni-Ba 0.5 Sr 0.5 Ce 0.6 Zr 0.2 Gd 0.1 Y 0.1 O 3-δ (BSCZGY) anode composites in 3% H 2 O-H 2 for proton conducting solid oxide fuel cells (H-SOFCs). Ni-BSCZGY composites with volume ratio of 30:70, 40:60, and 50:50 were synthesised through mechanical mixing and combustion methods. In combustion method, auto-ignition step led to brown coloured ash, which was calcined at 1000

High Performance Tubular Solid Oxide Fuel Cell Based on Ba0.5Sr0.5Ce0.6Zr0.2Gd0.1Y0.1O3-δProton Conducting Electrolyte

“…17,34 The far-right polarization arc belongs to a mass transfer occurring at the electrodes 35 with ω max = 6 − 8H z and capacitance in the range of 0.1 F; it has arisen both from the cathode contribution 36 and surface electrochemical reactions at the anode. 27 Our results also show that this portion is extremely dependent on the flow of oxidant as shown in Figure 4c. Fuel flow has similar outcomes, but its effect was hampered due to the non-preheating fuel injection and deteriorating effect of cooling of the cell which both lowers the performance and becomes problematic in the long run.…”

“…%) anode composite exhibited area specific resistance (ASR) of 0.8 .cm 2 at 710 • C under H 2 +3 vol.% H 2 O. 27 By the same analogy to oxygen conductor SOFCs, if we use a PCE/Ni cermet as support, we face some F765 challenges as well. Cerates have large thermal expansion coefficients due to the reduction of Ce 4+ to Ce 3+ which results in cell degradation in long-term operation.…”