A novel lanthanum strontium cobalt iron composite membrane synthesised through beneficial phase reaction for oxygen separation |
| |
| Affiliation: | 1. WA School of Mines: Minerals, Energy and Chemical Engineering (WASM-MECE), Curtin University, Perth, 6102, Australia;2. School of Energy Science and Engineering, Central South University, Changsha, 410083, Hunan, China;3. MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, Xi''an Jiaotong University, Xi''an, 710049, China;4. Department of Mechanical and Energy Engineering, Southern University of Science and Technology, Shenzhen, 518055, China;1. Forschungszentrum Jülich GmbH, Institute of Energy and Climate Research, Materials Synthesis and Processing (IEK-1), 52425 Jülich, Germany;2. RSE S.p.A., Via Rubattino 54, 20134 Milan, Italy;3. Institute for Materials Applications in Mechanical Engineering (IWM), RWTH Aachen University, Augustinerbach 4, 52062 Aachen, Germany;1. State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University (NanjingTech), Nanjing 210009, China;2. College of Chemical Engineering, Nanjing Tech University (NanjingTech), Nanjing 210009, China;3. Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University (NanjingTech), Nanjing 210009, China;4. College of Energy, Nanjing Tech University (NanjingTech), Nanjing 210009, China;5. Department of Chemical Engineering, Curtin University, Perth, Western Australia 6845, Australia;1. College of Transportation Engineering, Dalian Maritime University, 1 Linghai Road, Dalian, 116026, China;2. State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, 116023, China |
| |
| Abstract: | Composite ceramic membrane is one of the most attractive concepts which combines the advantages of different phases into a single membrane matrix. Recently, the reported significant increased oxygen surface kinetics on the Perovskite/Ruddlesden-Popper composite system because of the formation of novel and fast oxygen transport paths along the hetero-interface has been implanted into the oxygen permeation membrane system. In this work, a novel La0.6Sr0.4Co0.2Fe0.8O3-δ-(La0.5Sr0.5)2CoO4+δ (LSCF-LSC) composite hollow fiber membrane is synthesized with oxygen permeation flux of 4.52 mL min?1 cm?2 at 950 °C. It presents round 4 times and 2.3 times of that of the single LSCF membrane and LSC-coated LSCF membrane at 900 °C. For better comparison, (La0.576Sr0.424)1.136Co0.3Fe0.7O3-δ (LSCF-new) is prepared based on the composition of LSCF-LSC composite. The enhanced oxygen permeability was further investigated through electrochemical impedance spectroscopy (EIS) measurements. We also confirm that LSCF-LSC shows significantly lower area specific resistance (ASRs) for LSCF-LSC|Ce0.8Sm0.2O1.9 (SDC)|LSCF-LSC symmetrical cell relative to other symmetrical cells. This novel LSCF-LSC composite membrane also presents high CO2 tolerance, with stable oxygen permeation fluxes round 2.6 mL min?1 cm?2 at 900 °C for 100 h. |
| |
| Keywords: | Ceramic composites Hollow fiber Perovskite Membrane |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
