Infrared emissivities and microwave absorption properties of perovskite Sm0.5Sr0.5Co1−xFexO3 (0≤x≤0.5)

Chen, Le; Lu, Chunhua; Zhao, Yuanzheng; Ni, Yaru; Song, Jian; Xu, Zhongzi

doi:10.1016/j.jallcom.2011.06.055

Cited by 33 publications

(8 citation statements)

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“…obtained low area specific resistance of 0.055–0.071 Ω cm 2 at 600 °C and 0.51–0.60 Ω cm 2 at 500 °C with BSCF as the cathode and samarium doped ceria (SDC) as the electrolyte , . Sm 0.5 Sr 0.5 Co 0.2 Fe 0.8 O 3 (SSCF) is also a promising cathode material and can be obtained through Sm substitution of Ba in BSCF; however, this material has not gained much attention yet , . Lv et al.…”

Section: Introductionmentioning

confidence: 99%

Comparison of Different Perovskite Cathodes in Solid Oxide Fuel Cells

Shen

2018

Fuel Cells

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This study compares the electrochemical performance of three perovskite cathode materials, La0.6Sr0.4Co0.2Fe0.8O3 (LSCF), Ba0.5Sr0.5Co0.2Fe0.8O3 (BSCF), and Sm0.5Sr0.5Co0.2Fe0.8O3 (SSCF), at different operating temperatures, in order to provide optimal operating condition and performance for different solid oxide fuel cells. Among these three cathodes, BSCF has the highest power density of 39 mW cm−2 at 600 °C, 88 mW cm−2 at 650 °C, and 168 mW cm−2 at 700 °C; LSCF has the highest power density of 263 mW cm−2 at 750 °C and 456 mW cm−2 at 800 °C. The cathode overpotentials have the same trend as the power densities. Activation energies for the total cathode area specific resistance (ASR) are calculated to be 0.44 eV, 0.38 eV, and 0.52 eV for the LSCF, BSCF, and SSCF cathodes, respectively. Stability testing of 100 h shows that the open circuit voltages of the LSCF and BSCF cathodes drop 16.1% and 22.9% at 800 °C, respectively, as well as 15.3% and 11.3% at 600 °C, respectively, indicating that the LSCF cathode is more stable at 800 °C while the BSCF cathode is more stable at 600 °C. This work should provide important guidance for the solid oxide fuel cell designs and properties.

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Section: Introductionmentioning

confidence: 99%

Comparison of Different Perovskite Cathodes in Solid Oxide Fuel Cells

Shen

2018

Fuel Cells

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“…Rare-earth (RE) cobaltates with provskite structure of the general composition of the type RECoO 3 and hole-doped RE 1Àx A x CoO 3 as well as their half-doped RE 0.5 A 0.5 CoO 3 (where RE is a trivalent rare-earth ion such as La, Nd, Dy, and Gd, and A is a divalent alkaline-earth ion such as Sr, Ca or Ba) have been given fair attention in a recent years due to their unique magnetic and transport properties as well as the potential application [1][2][3][4][5][6]. In addition to the lattice, charge and spin degrees of freedom which are found in many other transition metal oxides, the cobaltates also display interesting features originating from the 'spin state' at Co-site [7,8].…”

Section: Introductionmentioning

confidence: 99%

Effect of Er substitution on ultrasonic anomaly in Dy0.5−xErxBa0.5CoO3 cobaltates

Shamsuddin¹,

Ibrahim²,

Yahya³

2013

Ultrasonics

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“…22,23 Although extensive work on such composites has been reported in recent years, little research on a simultaneous combination of the infrared emissivity and microwave absorbing behavior has been carried out. Based on our preliminary study, 24 it can be found that the bandwidth of the sintered Sm 0.5 Sr 0.5 CoO 3 is too small for use as a microwave absorption material, despite having low infrared emissivity. This paper offers a perspective on the experimental efforts toward the development of better absorbing characteristics with transition metal Ni substitution.…”

Section: Introductionmentioning

confidence: 99%