Descripción del proyecto
Definición de pruebas de resistencia aceleradas para unos electrolizadores y unas pilas de combustible de óxido sólido que duren más
Una pila de combustible de óxido sólido es una batería de combustible que ofrece una forma limpia y eficiente de generar energía a partir del combustible. Al cambiar al modo de electrolizador, puede generar hidrógeno a partir de vapor y electricidad. Las pruebas de resistencia aceleradas aplican deliberadamente estrés al catalizador durante un período breve a fin de evaluar la estabilidad de los nuevos materiales sin tener que usarlos en una pila de combustible operativa durante un período largo. El proyecto AD-ASTRA, financiado con fondos europeos, tiene por objeto definir unos protocolos para pruebas de resistencia aceleradas. Estos protocolos se deducirán mediante una comprensión sistemática de los mecanismos de degradación de los componentes envejecidos que conforman las pilas de combustible de óxido sólido que funcionan en los modos de pilas de combustible y de electrólisis. El objetivo será resolver los problemas de los electrodos de combustible y oxígeno, e interconectar las pérdidas de contacto.
Objetivo
AD ASTRA aims to define Accelerated Stress Testing (AST) protocols deduced from a systematic understanding of degradation mechanisms of aged components in solid oxide cell (SOC) stacks, operating in both fuel cell and electrolysis modes. In particular, fuel and oxygen electrode issues and interconnect contact loss will be tackled.
The project will build upon relevant information harvested in FCH JU projects, as well as make use of many samples taken from stacks operated in the field for thousands of hours, supplied by leading European SOC manufacturers across the two application areas CHP and P2X (combined heat&power generators and power-to-commodity energy storage).
The approach to harnessing the intricate phenomena causing critical performance degradation will be based upon a methodical analysis of in-service performance data correlated with post-operation states, augmented by a dual-focus campaign targeting macroscopic stack testing procedures as well as specific component ageing tests. The probabilistic nature of degradation will be captured by slimming down deterministic simulation models through conception and integration of stochastic correlations between (nominal/accelerated) operating conditions and degradation effects, based on statistically significant data obtained from field-tests and purposely generated experiments. Stochastic interpretation will thus serve the physical description of dominant SOFC degradation mechanisms in CHP and P2X operation, but allowing rapid estimation of remaining useful stack life.
The combined results will be translated to validated test protocols that allow quantifying and predicting degradation in SOCs as a function of test aggravation, defining appropriate transfer functions between stress-accelerating and real-world conditions. The overall project approach will be formalized for adoption by the relevant standards-developing organisations.
Ámbito científico
- natural scienceschemical scienceselectrochemistryelectrolysis
- engineering and technologyelectrical engineering, electronic engineering, information engineeringelectrical engineeringpower engineeringelectric power generationcombined heat and power
- engineering and technologyenvironmental engineeringenergy and fuelsfuel cells
Palabras clave
Programa(s)
Régimen de financiación
RIA - Research and Innovation actionCoordinador
00196 Roma
Italia