Advancements regarding in-operando diagnosis techniques for solid oxide cells NiYSZ cermets

A. Baldinelli, L. Barelli, G. Bidini, A. Di Cicco, R. Gunnella, M. Minicucci, A. Trapananti
2019 SECOND INTERNATIONAL CONFERENCE ON MATERIAL SCIENCE, SMART STRUCTURES AND APPLICATIONS: ICMSS-2019  
Development of an analytical model to investigate the effects of the extraflux versus the sky and the ground and optimization of the radiative characteristics of a thermochromic paint for a typical Italian location Abstract. Solid Oxide Cell (SOC) is a promising technology, featuring versatile applications from combined heat and power generation to power-to-gas storage. Whilst their commercial readiness is poor, their advantages in terms of efficiency and environmental sustainability are
more » ... ble. However, lifetime is an overriding concern. In the normal practice, in-operando experimental investigation of degradation is performed through volt-amperometric measurements and electrochemical impedance spectroscopy. Despite their implementation simplicity, it is hard to correlate the measurements output with the corresponding chemical/physical change at the microscopic scale. Ex-situ analysis on exhausted materials partially answers this question. Conversely, in-situ and in-operando material analysis provides insight on processes occurring during operating cycles (i.e. temperature range 650-900°C, pressure at least atmospheric, electrodes exposure to flammable gases, electric current flow across the membrane-electrodes assembly). Many techniques are available to this matter, yet their implementation usually results challenging. This review aims at presenting the advantages of in-situ and in-operando diagnosis techniques for the detection of specific degradation mechanisms affecting SOC cermets.
doi:10.1063/1.5138745 fatcat:t2pxinnvsjho5jwjomccq6f3ju