Combinatorial screening of Pd-Ag-Ni membranes for hydrogen separation

Pişkin, Fatih; Őztürk, Tayfur

doi:10.1016/j.memsci.2016.11.066

Cited by 33 publications

(9 citation statements)

References 15 publications

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“…Thin-film sputter deposition of SCY, using the target produced with the applied procedure, was carried out in a custom-configured magnetron sputtering system [27][28][29][30][31]. The system has RF sputter guns accommodating targets in 50 mm diameter.…”

Section: Thin Film Sputter Deposition Of Srce095yb005o3mentioning

confidence: 99%

Preparation of Yb-Doped Srceo3 Sputter Targets for Protonic Solid Oxide Fuel Cells

PİŞKİN

2022

Mugla Journal of Science and Technology

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A comprehensive study was carried out starting from powder synthesis to sintering procedure in order to produce a phasepure SrCe0.95Yb0.05O3-δ sputter target. In the powder synthesis, the effect of chelating and polymerization agents on the formation of single-phase SrCe0.95Yb0.05O3-δ was investigated in detail. In this regard, citric acid, EDTA, and their combinations in different ratios were evaluated as chelating agents. The calcination temperature, ranging from 1000 °C to 1300 °C, was also investigated to reveal its effect on the formation of possible secondary phases. Following the powder synthesis, SrCe0.95Yb0.05O3-δ sputter target with dimensions of 50 mm diameter and 3 mm thickness was produced by powder pressing with deformable compaction die and the subsequent sintering at 1300 °C for 10 hours. A relative density of 0.95 was achieved in SrCe0.95Yb0.05O3-δ targets as a result of the procedure in question without the use of a sintering aid.

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Section: Thin Film Sputter Deposition Of Srce095yb005o3mentioning

confidence: 99%

Preparation of Yb-Doped Srceo3 Sputter Targets for Protonic Solid Oxide Fuel Cells

PİŞKİN

2022

Mugla Journal of Science and Technology

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“…On the contrary, the steam conversion of alcohols can be carried out within the framework of one process, membrane catalysis [188][189][190]. Removal of one of the reaction products, hydrogen, from the reaction site allows increasing the yield of the main products and obtaining high-purity hydrogen [191,192].…”

Section: Membrane Technologies For Hydrogen Productionmentioning

confidence: 99%

Membrane Technologies for Decarbonization

Alent’ev

Волков

Воротынцев

et al. 2021

Membr. Membr. Technol.

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The deteriorating environmental situation has stimulated the world community to develop research related to the decarbonization of the economy and hydrogen energy. These two areas are essentially focused on membrane technologies, which play a crucial role in solving key tasks for these areas. This review is devoted to this research. The first part describes various membrane technologies aimed at capturing CO 2 from the most common gas mixtures, primarily containing nitrogen, methane, and hydrogen. In recent years, studies related to the amine purification of CO 2 , including membrane technologies, and the use of porous membranes filled with ionic liquids has also been intensively developed. Electromembrane technologies are also being developed that allow not only capture of CO 2 but also to process it into fuel or valuable chemicals. The course taken by several developed countries, including Russia, for the development of hydrogen energy includes the production, purification of hydrogen, and its conversion into energy. It should be noted that membrane technologies are fundamentally important for the development of each of these areas. Thus, the evolution of hydrogen is possible with the use of polymer membranes, and for deep purification and production of high-purity hydrogen by membrane catalysis; membranes based on palladium alloys are used. Finally, fuel cells are developed to produce energy from hydrogen, the most important part of which are proton or oxygen-conducting membranes.

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“…However, problems such as hydrogen embrittlement, surface poisoning of membranes in the presence of H 2 S and CO x , and the high cost of Pd restrict their widespread use 10 . Therefore, there are intense efforts to develop membranes with reduced Pd content or to develop Pd‐free membranes 11‐15 . Here, dense ceramic membranes are promising candidates as an alternative to Pd‐based membranes to lower the membrane cost.…”

Section: Introductionmentioning

confidence: 99%

Development ofBaZr₀_.₈₀Y₀_.₂₀O₃andSrCe₀_.₉₅Yb₀_.₀₅O₃Heterostructures forProton‐conductingOxides

Özdal

Pişkin

2022

Intl J of Energy Research

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An investigation was carried out on BaZr 0.80 Y 0.20 O 3 (BZY) and SrCe 0.95 Yb 0.05 O 3 (SCY) heterostructures for proton-conducting oxides. The heterostructures were produced by a combinatorial approach yielding 27 different phase fractions in a single sputter deposition. The heterostructures with different phase fractions were evaluated by electrochemical impedance spectroscopy and DC 4-probe resistivity measurement to identify promising compositions for proton-conducting oxides. The findings indicated that the higher SCY fraction in heterostructures resulted in higher conductivity under a hydrogen atmosphere. The highest conductivity was measured with BZY6-SCY94 composition, while BZY12-SCY88, BZY18-SCY82, and BZY34-SCY63 exhibited slightly lower conductivities at 500 C. Additionally, it was observed that the heterostructures exhibited different trends as a function of temperature. This indicated that the hetero-interface formed in these oxides does not have a linear impact on the electrochemical performance. Another finding is that the heterostructured oxides typically exhibited conductivity higher than 10 À2 S/cm, taken as a critical threshold, at temperatures lower than 500 C. The results indicated that the heterostructures produced with the methodology in the study offer remarkable total conductivities at relatively low operating temperatures. Highlights• Combinatorial development of BaZr 0.80 Y 0.20 O 3 and SrCe 0.95 Yb 0.05 O 3 oxides.• BZY6-SCY94 heterostructure exhibited the highest total conductivity at 500 C.• Heterostructures produced with the methodology offer remarkable conductivities.

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Combinatorial screening of Pd-Ag-Ni membranes for hydrogen separation

Cited by 33 publications

References 15 publications

Preparation of Yb-Doped Srceo3 Sputter Targets for Protonic Solid Oxide Fuel Cells

Preparation of Yb-Doped Srceo3 Sputter Targets for Protonic Solid Oxide Fuel Cells

Membrane Technologies for Decarbonization

Development ofBaZr₀_.₈₀Y₀_.₂₀O₃andSrCe₀_.₉₅Yb₀_.₀₅O₃Heterostructures forProton‐conductingOxides

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Combinatorial screening of Pd-Ag-Ni membranes for hydrogen separation

Cited by 33 publications

References 15 publications

Preparation of Yb-Doped Srceo3 Sputter Targets for Protonic Solid Oxide Fuel Cells

Preparation of Yb-Doped Srceo3 Sputter Targets for Protonic Solid Oxide Fuel Cells

Membrane Technologies for Decarbonization

Development ofBaZr0.80Y0.20O3andSrCe0.95Yb0.05O3Heterostructures forProton‐conductingOxides

Contact Info

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Development ofBaZr₀_.₈₀Y₀_.₂₀O₃andSrCe₀_.₉₅Yb₀_.₀₅O₃Heterostructures forProton‐conductingOxides