NDLI: HeteroFoaMs: Electrode Modeling in Nano-Structured Heterogeneous Materials for Energy Systems

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Chiu, W. K. S. Virkar, A. V. Reifsnider, K. L. Rabbi, F. Liu, Q.
Copyright Year	2011
Abstract	Heterogeneous Functional Materials, e.g., “HeteroFoaMs” are at the heart of countless energy systems, including (from left to right below) heat storage materials (a), batteries (b), solid oxide fuel cells (c), and polymer electrolyte fuel cells (d). HeteroFoaMs are generally nano-structured and porous to accommodate transport of gasses or fluids, and must be multi-functional (i.e., active operators on mass, momentum, energy or charge, in combinations). This paper will discuss several aspects of modeling the relationships between the constituents and microstructure of these material systems and their device functionalities. Technical advances based on these relationships will also be identified and discussed. Three major elements of the general problem of how to model HeteroFoaM electrodes will be addressed. Modeling approaches for ionic charge transfer with electrochemistry in the nano-structured porosity of the electrode will be discussed. Second, the effect of morphology and space charge on conduction through porous doped ceria particle assemblies, and their role in electrode processes will be modeled and described. And third, the effect of local heterogeneity and morphology on charge distributions and polarization in porous dielectric electrode materials will be analyzed using multi-physics field equations set on the details of local morphology. Several new analysis methods and results, as well as experimental data relating to these approaches will be presented. The value, capabilities, and limitations of the approaches will be evaluated.
Sponsorship	Advanced Energy Systems Division
Starting Page	271
Ending Page	275
Page Count	5
File Format	PDF
ISBN	9780791854693
DOI	10.1115/FuelCell2011-54950
Volume Number	ASME 2011 9th International Conference on Fuel Cell Science, Engineering and Technology
Conference Proceedings	ASME 2011 9th International Conference on Fuel Cell Science, Engineering and Technology collocated with ASME 2011 5th International Conference on Energy Sustainability
Language	English
Publisher Date	2011-08-07
Publisher Place	Washington, DC, USA
Access Restriction	Subscribed
Subject Keyword	Solid oxide fuel cells Space charge Energy / power systems Modeling Polarization (waves) Physics Polarization (electricity) Electrodes Heat conduction Fluids Polarization (light) Fuel cells Heat storage Particulate matter Electrochemistry Electrolytes Porosity Charge transfer Kinetic energy Polymers
Content Type	Text
Resource Type	Article

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HeteroFoaMs: Electrode Modeling in Nanostructured Heterogeneous Materials for Energy Systems

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