Experimental and thermodynamic analyses of a novel anode supported solid oxide fuel cell

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  • Solid oxide fuel cell (SOFC) is a promising clean technology to generate power with high efficiency at different scales. Decreasing the degradation rate of SOFCs is a challenge that can be tackled by lowering the operation temperature (<650°C). However, this can adversely affect cell performance and therefore it is important to develop novel electrodes which show high performance at low operation temperatures. This paper presents a novel anode-supported tubular fuel cell consisting of NiO:YSZ (65:35 wt%) cermet with 30 vol.% graphite as the pore-former. The anode support was coated with a thin anode functional layer (20 μm) with a NiO:YSZ ratio of 65:35 wt%. The Ruddlesden-Popper cathode (Nd2NiO4+δ) microstructure was composed of nano-size (≤ 50 nm) particles infiltrated into a thin porous YSZ scaffold. The combination of using a thing dense YSZ electrolyte (6.5 μm), an active anode functional layer, and a high-performing cathode led to high performance at low temperatures. The proposed cell was analyzed both experimentally and thermodynamically at three temperatures of 500, 550, and 600°C. The simulation results indicate that a maximum power density of 0.1, 0.25, and 0.66 W/cm2 can be achieved at 500, 550, and 600°C, respectively. The simulated data show an excellent match (< 3% difference) with the experimental data. This paper includes the development of an SOFC model for detailed analysis of the variables that are difficult to measure during experiments.

    Part of the Proceedings of the Canadian Society for Mechanical Engineering International Congress 2022.

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    Attribution-NonCommercial 4.0 International