High Temperature Energy Conversion: Electrochemical Oxidation and Reduction Mechanisms
Abstract
ABSTRACT:This symposium will highlight recent advances in the in situ characterization and modeling of chemistry occurring in SOECs and high temperature, solid state proton conducting devices. Rapid progress in SOEC development has been motivated by the need to produce electrical power cleanly and efficiently with available and emerging fuels and a growing interest in SOEC technology as ameans to convert ~products~ such as CO2 and H2O into high value chemicals. Chief among the challenges limiting the development and commercialization of these technologies is understanding the microscopic origins of charge transfer reactions in heterogeneous environments and identifying mechanisms responsible for component degradation. Electrochemical methods can quantifyoverall device performance and monitor device durability, but identifying the mechanisms responsible for charge transfer and material degradation requires tools that can directly measure molecular species and material properties in functioning devices. This workshop will focus on recently developed experimental methods that have begun to characterize and quantify elementaryoxygen reduction and fuel oxidation reactions as well as contaminant poisoning mechanisms and material degradation pathways. These research efforts have emphasized that SOECs function through a complex interplay of gas phase chemistry and surface reactions on heterogeneous materials under extreme conditions far from equilibrium. Outcomes from experimental studies are used to refine emerging kinetic models that seek to provide a molecular underpinning of observed device performance. A common theme throughout this workshop will be the interplay between operando experimental findings and the development of detailed kinetic models designed to optimize device performance and minimize material degradation.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Apr 25, 2019
- Source ID
- N000141912302
Entities
People
- Rob Walker
Organizations
- Office of Naval Research
- United States Navy