Microstructures and electrical properties of zirconium doped barium cerate perovskite proton conductors

Jhuang, Jhe Wei; Lee, Kan Rong; Lee, Sheng Wei; Chang, Jeng Kuei; Jang, Shian Ching; Tseng, Chung Jen

doi:10.1016/j.ijhydene.2019.04.185

Cited by 20 publications

(2 citation statements)

References 38 publications

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“…In this experiment, Al 3+ is replaced by Zn 2+ , due to Al 3+ having a smaller ionic radius(0.054 nm) than that of Zn 2+ (0.074 nm), the incident angle shifts to a small angle with the interplanar crystal spacing increasing. 37 The XRD data are shown in Fig. 2 conforms to the Bragg's law, therefore Zn 2+ was successfully doped into the Al 2 O 3 .…”

Section: Resultsmentioning

confidence: 52%

Research on the Electrochemical Properties of Al_2−xZn_xO_3−α

Ruan

Bao

et al. 2022

J. Electrochem. Soc.

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To understand the electrochemical properties of the Al2O3 based proton conductor in more detail, a solid-state electrolyte Zn-doped Al2O3 was successfully prepared using the solid-state reaction method at a temperatures of 1873 K for 10 h. The phase structure and microscopic morphology of these materials are thoroughly investigated. The structural analysis results revealed that the electrolyte has a pure perovskite phase structure. The crystal grains are relatively uniform, the ceramic material is dense, and the relative density is greater than 97 percent, according to microscopic morphology analysis. The electrical conductivity of the specimen was measured using the two-terminal AC method to clarify the electrochemical properties of Zn-doped Al2O3. The H/D isotope effect of electrical conductivity was studied, and it was discovered that protons are the dominant charge carrier at temperatures ranging from 1073 to 1473 K in hydrogen-rich atmospheres. From the point of view of electromotive force measurement, the theoretical (computational) electrical potential matches the measured potential very well. In a hydrogen-rich atmosphere of 1073–1473 K, the proton mobility of Al2-xZnxO3-α exceeds 0.90. In this work, we proved that Al2-xZnxO3-α sample is a proton conductor

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Section: Resultsmentioning

confidence: 52%

Research on the Electrochemical Properties of Al_2−xZn_xO_3−α

Ruan

Bao

et al. 2022

J. Electrochem. Soc.

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“…This has led researchers to investigate new energy conversion techniques, such as clean energy, hydrogen production, and power generation technologies [1][2][3]. Among them, converting the wide range of hydrocarbon/renewable fuels using solid oxide fuel cells (SOFCs) is considered a promising technology due to their high efficiency, capability of using a wide range of fuels [4][5][6][7][8][9][10][11], and efficient integration with heat recovery systems [12][13][14][15][16]. Hydrocarbon fuels can be reformed inside SOFCs, and such systems are called internal reforming SOFCs (IR-SOFCs).…”

Section: Introductionmentioning

confidence: 99%

Thermodynamic Analysis of Three Internal Reforming Protonic Ceramic Fuel Cell-Gas Turbine Hybrid Systems

et al. 2022

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Protonic ceramic fuel cells (PCFCs) offer direct and efficient conversion of hydrocarbon fuels into electricity. In this study, three internal-reforming (IR)-PCFC/gas turbine (GT) hybrid systems are proposed and analyzed to achieve higher system efficiency. High-quality heat from GT in system 1 and system 2 is supplied to anode and cathode preheaters, respectively, whereas in system 3, the heat is simultaneously split into both preheaters. Effects of air flow rate, fuel utilization factor (Uf), and steam to carbon ratio (S/C) are also investigated. It is found that the best system design can be achieved by effectively utilizing GT exhaust heat for both electrode preheaters, as indicated in system 3. The maximum energy system efficiency obtained among the hybrid systems analyzed in this study is 71% with total exergy destruction of 686.7 kW. When fueled by methane, the hybrid system can achieve energy and exergy efficiencies of 71% and 77%, respectively, with 0.85 Uf. On the other hand, propane-fueled systems can achieve energy and exergy efficiencies of 68% and 75%, respectively. As S/C increases from 2 to 7, system efficiency decreases from 71% to 50%. When system 3 is fueled with butane or propane, system efficiency is only 3% lower than that fueled by methane.

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Structure, synthesis, properties and solid oxide electrolysis cells application of Ba(Ce, Zr)O3 based proton conducting materials

Jing

Pang

Chen

et al. 2022

Chemical Engineering Journal

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Microstructures and electrical properties of zirconium doped barium cerate perovskite proton conductors

Cited by 20 publications

References 38 publications

Research on the Electrochemical Properties of Al_2−xZn_xO_3−α

Research on the Electrochemical Properties of Al_2−xZn_xO_3−α

Thermodynamic Analysis of Three Internal Reforming Protonic Ceramic Fuel Cell-Gas Turbine Hybrid Systems

Structure, synthesis, properties and solid oxide electrolysis cells application of Ba(Ce, Zr)O3 based proton conducting materials

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Microstructures and electrical properties of zirconium doped barium cerate perovskite proton conductors

Cited by 20 publications

References 38 publications

Research on the Electrochemical Properties of Al2−x Zn x O3−α

Research on the Electrochemical Properties of Al2−x Zn x O3−α

Thermodynamic Analysis of Three Internal Reforming Protonic Ceramic Fuel Cell-Gas Turbine Hybrid Systems

Structure, synthesis, properties and solid oxide electrolysis cells application of Ba(Ce, Zr)O3 based proton conducting materials

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Research on the Electrochemical Properties of Al_2−xZn_xO_3−α

Research on the Electrochemical Properties of Al_2−xZn_xO_3−α