Optimal design of a model energy conversion device [electronic resource]

• Tác giả: National Science Foundation (U.S.), Sandia National Laboratories, United States
• Ngôn ngữ: eng
• Ký hiệu phân loại: 621.312 Generation, modification, storage
• Mô tả vật lý: Size: p. 389-401 : , digital, PDF file.
• Bộ sưu tập: Metadata
• ID: 255659
• Chủ đề: 1. 30 direct energy conversion; 2. Energy convergence device; 3. Interfacial reactions; 4. Phase field approach; 5. Reaction-diffusion equations; 6. Thermal hydrolysis

Tóm tắt

Fuel cells, batteries, and thermochemical and other energy conversion devices involve the transport of a number of (electro-) chemical species through distinct materials so that they can meet and react at specified multi-material interfaces. Therefore, morphology or arrangement of these different materials can be critical in the performance of an energy conversion device. In this paper, we study a model problem motivated by a solar-driven thermochemical conversion device that splits water into hydrogen and oxygen. We formulate the problem as a system of coupled multi-material reaction-diffusion equations where each species diffuses selectively through a given material and where the reaction occurs at multi-material interfaces. In conclusion, we introduce a phase-field formulation of the optimal design problem and numerically study selected examples.