Correlation between microstructure and catalytic and mechanical properties during redox cycling for Ni-BCY and Ni-BCZY composites

Shen, Chin Tien; Lee, Yi‐Hsuan; Xie, Kui; Yen, Chih Ping; Jhuang, Jhe Wei; Lee, Kan Rong; Lee, Sheng Wei; Tseng, Chung Jen

doi:10.1016/j.ceramint.2017.05.250

Cited by 15 publications

(9 citation statements)

References 20 publications

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“…The Ni-to-NiO transition in the 5CBCY matrix oxidation process not only causes bulk volume expansion but also variation in the Ni structure. For its part, the reduction of NiO-to-Ni causes material shrinkage and induces an increase in porosity [ 48 , 49 , 50 ]. In the oxidised NiO–5CBCY sample, the electrical conductivity decreased over time and dropped sharply after 220 min as a result of NiO formation ( Figure 17 ).…”

Section: Resultsmentioning

confidence: 99%

NiO–Ba0.95Ca0.05Ce0.9Y0.1O3−δ as a Modified Anode Material Fabricated by the Tape Casting Method

et al. 2022

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The development of new chemically resistant anodes for protonic ceramic fuel cells (PCFCs) is urgently required to avoid the costly deep hydrogen purification method. Ba0.95Ca0.05Ce0.9Y0.1O3−δ (5CBCY), which is more chemically resistant than BaCaCe0.9Y0.1O3−δ, was here tested as a component of a composite NiO–5CBCY anode material. A preparation slurry comprising 5CBCY, NiO, graphite, and an organic medium was tape cast, sintered and subjected to thermal treatment in 10 vol.% H2 in Ar at 700 °C. Differential thermal analysis, thermogravimetry, quadrupole mass spectrometry, X-ray diffraction analysis, scanning electron microscopy, the AC four-probe method and electrochemical impedance spectroscopy were used for the investigation. The electrical conductivity of the Ni–5CBCY in H2–Ar at 700 °C was 1.1 S/cm. In the same gas atmosphere but with an additional 5 vol.% CO2, it was slightly lower, at 0.8 S/cm. The Ni–5CBCY cermet exhibited repeatable electrical conductivity values during Ni-to-NiO oxidation cycles and NiO-to-Ni reduction in the 5CBCY matrix, making it sufficient for preliminary testing in PCFCs.

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Section: Resultsmentioning

confidence: 99%

NiO–Ba0.95Ca0.05Ce0.9Y0.1O3−δ as a Modified Anode Material Fabricated by the Tape Casting Method

et al. 2022

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“…25,26 Among them, the peak at around 315 °C was attributed to the reduction process of NiO particles exposed on the Al 2 O 3 surface, and the other two peaks, located at 380 °C and 518 °C, were due to the reduction of small and larger NiO particles which were inside the Al 2 O 3 supporter, respectively. 27 After being coated with the SOD zeolite membrane (Ni/Al 2 O 3 @SOD catalyst), the reduction peak temperature of the oxidized Ni generally became higher (342 °C, 430 °C, and 670 °C). It indicated that the SOD membrane had a certain shielding effect, which made the reduction of Ni more difficult.…”

Section: Resultsmentioning

confidence: 99%

Efficient hydrodesulfurization of dibenzothiophene over core–shell Ni/Al₂O₃@SOD and Mo/Al₂O₃ composite catalysts

Sun¹,

Yang²,

Han³

et al. 2022

Inorg. Chem. Front.

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“…Selain itu O 2--SOFC juga menuntut penggunaan material yang mahal dan energi input yang sangat besar untuk memanaskan sistem sampai temperatur kerja yang ditetapkan. Beberapa faktor tersebut menjadi kendala penerapan O 2--SOFC untuk skala komersial [3][4]. Dalam beberapa puluh tahun belakangan telah dikembangkan proton conducting SOFC (H + -SOFC atau PSOFC) yang dapat beroperasi pada temperatur yang relatif lebih rendah dari SOFC konvensional (450-650 °C) dan menghasilkan energi elektromagnetik yang tinggi [5][6].…”

Section: Pendahuluanunclassified

“…Dibandingkan dengan SOFC konvensional, pengembangan ini memungkinkan untuk penggunaan material yang relatif lebih murah untuk interkoneksi, kontrol sintering elektrode yang lebih baik, interaksi elektrode dan elektrolit pun semakin bagus, dengan demikian bisa memperpanjang masa operasional SOFC. H + -SOFC juga memiliki konduktivitas proton yang tinggi, serta aktivasi energi yang rendah [2][3].…”

Section: Pendahuluanunclassified

Pengaruh Doping Cu terhadap Karakteristik Material dan Ketahanan Karbon pada Anoda Ni1-X-CuX-BCZY untuk PSOFC

Setiawan

Tseng

Shen

et al. 2020

JRM

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The purpose of this study is to investigate the microstructure characteristics of the Ni1-xCux-BCZY anode and to analyze the carbon resistance by doping Cu into the Ni-BCZY anode. Ni1-xCux and BaCe0.7Zr0.1Y0.2O3-𝛿 (BCZY) powder were prepared by solid-state reaction with Ni1-xCux /BCZY = 60:40 wt%. The powder is calcined at a temperature of 700 °C, sintered at 1450 °C, and reduced by pure H2. The results of the Ni1-xCux-BCZY microstructure show an increase in the average particle size from 2.71 to 2.88 µm with increasing calcination time from 0.5 to 1.5 hours. Furthermore, the conductivity of Ni1-xCux-BCZY (x = 0.1) is lower than Ni1-xCux-BCZY (x = 0), this is associated with enhancement electron scattering, which correlatives with large metal particle obtained. The optimum conductivity of Ni1-xCux-BCZY(x=0.1) is obtained at a calcination time of 0.5 hours. Furthermore, NiCu anode can effectively increase the carbon resistance while using methane as a fuel.

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Correlation between microstructure and catalytic and mechanical properties during redox cycling for Ni-BCY and Ni-BCZY composites

Cited by 15 publications

References 20 publications

NiO–Ba0.95Ca0.05Ce0.9Y0.1O3−δ as a Modified Anode Material Fabricated by the Tape Casting Method

NiO–Ba0.95Ca0.05Ce0.9Y0.1O3−δ as a Modified Anode Material Fabricated by the Tape Casting Method

Efficient hydrodesulfurization of dibenzothiophene over core–shell Ni/Al₂O₃@SOD and Mo/Al₂O₃ composite catalysts

Pengaruh Doping Cu terhadap Karakteristik Material dan Ketahanan Karbon pada Anoda Ni1-X-CuX-BCZY untuk PSOFC

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Correlation between microstructure and catalytic and mechanical properties during redox cycling for Ni-BCY and Ni-BCZY composites

Cited by 15 publications

References 20 publications

NiO–Ba0.95Ca0.05Ce0.9Y0.1O3−δ as a Modified Anode Material Fabricated by the Tape Casting Method

NiO–Ba0.95Ca0.05Ce0.9Y0.1O3−δ as a Modified Anode Material Fabricated by the Tape Casting Method

Efficient hydrodesulfurization of dibenzothiophene over core–shell Ni/Al2O3@SOD and Mo/Al2O3 composite catalysts

Pengaruh Doping Cu terhadap Karakteristik Material dan Ketahanan Karbon pada Anoda Ni1-X-CuX-BCZY untuk PSOFC

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Efficient hydrodesulfurization of dibenzothiophene over core–shell Ni/Al₂O₃@SOD and Mo/Al₂O₃ composite catalysts