Konstantin Efimov*, Torben Halfer, Alexander Kuhn, Paul Heitjans, Jürgen Caro, Armin Feldhoff
{"title":"新型无钴透氧钙钛矿型膜","authors":"Konstantin Efimov*, Torben Halfer, Alexander Kuhn, Paul Heitjans, Jürgen Caro, Armin Feldhoff","doi":"10.1021/cm902882s","DOIUrl":null,"url":null,"abstract":"<p >Cobalt-free perovskite with the novel composition (Ba<sub>0.5</sub>Sr<sub>0.5</sub>)(Fe<sub>0.8</sub>Cu<sub>0.2</sub>)O<sub>3-δ</sub> (BSFCu) was synthesized via a sol?gel method and studied with respect to the crystallographic structure as well as the oxygen ionic and the electronic conductivity. In situ X-ray diffraction (XRD) was applied to investigate the thermal dilatation and the phase stability of the BSFCu at high and intermediate temperatures. Additionally, time-dependent oxygen permeation performance measurements were carried out for BSFCu and Co-based (Ba<sub>0.5</sub>Sr<sub>0.5</sub>)(Co<sub>0.8</sub>Fe<sub>0.2</sub>)O<sub>3-δ</sub> membranes at 1023 K for 200 h. The BSFCu phase was found to be a cubic perovskite by XRD and transmission electron microscopy. The BSFCu membrane exhibits a very high oxygen permeation and electrical conductivity as compared to known perovskite membranes. The oxygen permeation of the BSFCu membrane maintains its value for 200 h at 1023 K unlike (Ba<sub>0.5</sub>Sr<sub>0.5</sub>)(Co<sub>0.8</sub>Fe<sub>0.2</sub>)O<sub>3-δ</sub>, whose oxygen flux was reduced by one-half during the same interval.</p>","PeriodicalId":33,"journal":{"name":"Chemistry of Materials","volume":"22 4","pages":"1540–1544"},"PeriodicalIF":7.0000,"publicationDate":"2010-01-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1021/cm902882s","citationCount":"81","resultStr":"{\"title\":\"Novel Cobalt-Free Oxygen-Permeable Perovskite-Type Membrane\",\"authors\":\"Konstantin Efimov*, Torben Halfer, Alexander Kuhn, Paul Heitjans, Jürgen Caro, Armin Feldhoff\",\"doi\":\"10.1021/cm902882s\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p >Cobalt-free perovskite with the novel composition (Ba<sub>0.5</sub>Sr<sub>0.5</sub>)(Fe<sub>0.8</sub>Cu<sub>0.2</sub>)O<sub>3-δ</sub> (BSFCu) was synthesized via a sol?gel method and studied with respect to the crystallographic structure as well as the oxygen ionic and the electronic conductivity. In situ X-ray diffraction (XRD) was applied to investigate the thermal dilatation and the phase stability of the BSFCu at high and intermediate temperatures. Additionally, time-dependent oxygen permeation performance measurements were carried out for BSFCu and Co-based (Ba<sub>0.5</sub>Sr<sub>0.5</sub>)(Co<sub>0.8</sub>Fe<sub>0.2</sub>)O<sub>3-δ</sub> membranes at 1023 K for 200 h. The BSFCu phase was found to be a cubic perovskite by XRD and transmission electron microscopy. The BSFCu membrane exhibits a very high oxygen permeation and electrical conductivity as compared to known perovskite membranes. The oxygen permeation of the BSFCu membrane maintains its value for 200 h at 1023 K unlike (Ba<sub>0.5</sub>Sr<sub>0.5</sub>)(Co<sub>0.8</sub>Fe<sub>0.2</sub>)O<sub>3-δ</sub>, whose oxygen flux was reduced by one-half during the same interval.</p>\",\"PeriodicalId\":33,\"journal\":{\"name\":\"Chemistry of Materials\",\"volume\":\"22 4\",\"pages\":\"1540–1544\"},\"PeriodicalIF\":7.0000,\"publicationDate\":\"2010-01-08\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://sci-hub-pdf.com/10.1021/cm902882s\",\"citationCount\":\"81\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Chemistry of Materials\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://pubs.acs.org/doi/10.1021/cm902882s\",\"RegionNum\":2,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"CHEMISTRY, PHYSICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Chemistry of Materials","FirstCategoryId":"88","ListUrlMain":"https://pubs.acs.org/doi/10.1021/cm902882s","RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
Cobalt-free perovskite with the novel composition (Ba0.5Sr0.5)(Fe0.8Cu0.2)O3-δ (BSFCu) was synthesized via a sol?gel method and studied with respect to the crystallographic structure as well as the oxygen ionic and the electronic conductivity. In situ X-ray diffraction (XRD) was applied to investigate the thermal dilatation and the phase stability of the BSFCu at high and intermediate temperatures. Additionally, time-dependent oxygen permeation performance measurements were carried out for BSFCu and Co-based (Ba0.5Sr0.5)(Co0.8Fe0.2)O3-δ membranes at 1023 K for 200 h. The BSFCu phase was found to be a cubic perovskite by XRD and transmission electron microscopy. The BSFCu membrane exhibits a very high oxygen permeation and electrical conductivity as compared to known perovskite membranes. The oxygen permeation of the BSFCu membrane maintains its value for 200 h at 1023 K unlike (Ba0.5Sr0.5)(Co0.8Fe0.2)O3-δ, whose oxygen flux was reduced by one-half during the same interval.
期刊介绍：
The journal Chemistry of Materials focuses on publishing original research at the intersection of materials science and chemistry. The studies published in the journal involve chemistry as a prominent component and explore topics such as the design, synthesis, characterization, processing, understanding, and application of functional or potentially functional materials. The journal covers various areas of interest, including inorganic and organic solid-state chemistry, nanomaterials, biomaterials, thin films and polymers, and composite/hybrid materials. The journal particularly seeks papers that highlight the creation or development of innovative materials with novel optical, electrical, magnetic, catalytic, or mechanical properties. It is essential that manuscripts on these topics have a primary focus on the chemistry of materials and represent a significant advancement compared to prior research. Before external reviews are sought, submitted manuscripts undergo a review process by a minimum of two editors to ensure their appropriateness for the journal and the presence of sufficient evidence of a significant advance that will be of broad interest to the materials chemistry community.
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