Ceramic modules for micro solid-oxide fuel cells
| Autor: | Paul Muralt, Peter Ryser, Thomas Maeder, Bo Jiang, Yan Yan |
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| Předmět: |
Interconnection
couches épaisses Materials science business.industry LTCC Mechanical engineering plaque chauffante Modular design fuel cell pile à combustible visual_art visual_art.visual_art_medium Electronic engineering Thick film technology Pharmacology (medical) Fluidics Electronics Ceramic SOFC Energy source business hotplate Microfabrication thick-film technology |
| Zdroj: | Scopus-Elsevier |
| Popis: | Micro solid-oxide fuel cells (μ -SOFCs) based on microfabrication processes are a promising alternative to batteries for supplying portable electronics, as very high energy densities may be achieved. However, a complete μ -SOFC module is a quite intricate structure, comprising 1) a gas-processing unit (GPU) to process a convenient energy source such as lighter gas into a more usable form, 2) the energy-generating cells proper, and 3) a post-combustor. The mechanical integration of these elements and their fluidic and electrical interconnection into a single module is a very challenging task for micro-scale integration. Therefore, a modular low-temperature co-fired ceramic (LTCC) package is proposed, allowing individual testing and subsequent full integration of the different cell elements. The package functions as a hotplate, a mechanical support for the hot zone and as an electrical / fluidic interconnect, applying a slender-bridge design to minimise thermal conduction losses and stresses, thus allowing convenient low-temperature electrical connections and fluidic ports. For applications requiring a better thermal expansion match to silicon and borosilicate glass, a silicon / borosilicate glass-sealed variant was also developed. Preliminary thermal characterisation of these packages is shown, and concepts for integrating the GPU and post-combustor into the LTCC structure are presented. |
| Databáze: | OpenAIRE |
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