| Dual Phase 전도성 CO2 분리막: 메커니즘, 미세구조 및 전기전도도 |
| 이시우, 유지행, 우상국 |
| 한국에너지기술연구원 에너지재료연구센터 |
| Dual Phase Conductive CO2 Membranes: Mechanism, Microstructure, and Electrical Conductivity |
| Shi-Woo Lee, Ji-Haeng Yu, Sang-Kuk Woo |
| Energy Materials Research Center, Korea Institute of Energy Research |
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| ABSTRACT |
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Novel conductive $CO_2$ membranes composed of dual phases, molten carbonates and electronic conducting ceramics, were investigated. As the microstructure control of electronic conducting ceramic supports is extremely important to keep the molten carbonates stable in the membranes by a capillary force applied by the pore structure of the supports, we have scrutinized the microstructure of the electronic conducting supports utilizing microscopic images and gas permeability measurement. From the evaluation of the electrical conductivities of the molten carbonates and the electronic conducting ceramic supports, we found that the ionic conductivity of the molten carbonates could determine $CO_2$ flux through the dual phase membranes if the surface exchange rate were relatively high enough. |
| Key words:
Carbon dioxide, Membrane, Dual phase, Molten carbonate |
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