SmBaCo2O5+x double-perovskite structure cathode material for intermediate-temperature solid-oxide fuel cells

Zhou, Qingjun; He, Tianmin; Ji, Yuan

doi:10.1016/j.jpowsour.2008.07.064

Cited by 164 publications

(55 citation statements)

References 34 publications

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“…11b). These results are comparable to those of high performance cathode materials reported in literature, such as SmBaCo 2 O x5+x (0.031 U cm 2 at 800 C), 26 PrBa 0.5 Sr 0.5 Co 2 O 5+x (0.027 U cm 2 at 800 C).…”

Section: Tablesupporting

confidence: 89%

Tin doped PrBaFe₂O_5+δ anode material for solid oxide fuel cells

Dong

Yang

et al. 2017

RSC Adv.

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Section: Tablesupporting

confidence: 89%

Tin doped PrBaFe₂O_5+δ anode material for solid oxide fuel cells

Dong

Yang

et al. 2017

RSC Adv.

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“…As shown in Fig. 4, the layered pervoskite LnBCO oxides have high TEC due to the high content of cobalt [31]. The TEC values of LnBCO increase from 21.23× 10 −6 K −1 to 27.8×10 −6 K −1 with the A-site element change from Nd to La, which is caused by the large ionic size of La [32].…”

Section: Oxygen Permeation Flux Measurementmentioning

confidence: 91%

Oxygen permeability of Ce0.8Sm0.2O2 − δ–LnBaCo2O5 + δ (Ln=La, Nd, Sm, and Y) dual-phase ceramic membranes

Chen

Zhao

Xie

et al. 2014

Ionics

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Ce 0.8 Sm 0.2 O 2 − δ -LnBaCo 2 O 5 + δ (SDC-LnBCO, Ln=La, Nd, Sm, and Y) composites were prepared and characterized as dense ceramic membranes for oxygen separation. Ce 0.8 Sm 0.2 O 2−δ (SDC) shows a good chemical compatibility with LaBaCo 2 O 5+δ (LBCO), NdBaCo 2 O 5+δ (NBCO), and SmBaCo 2 O 5+δ (SBCO), while a little of impurity is detected in the sample with YBaCo 2 O 5+δ (YBCO). The SDC-SBCO and SDC-YBCO samples exhibit larger grain size than SDC-LBCO and SDC-NBCO. The incorporation of SDC increases the structural stability and decreases the thermal expansion coefficient of LnBCO at high temperature. The oxygen permeation flux of SDC-LnBCO dual-phase membrane decreases with decreasing Ln 3+ radius, which is 2.57×10 −7 , 1.58×10 −7 , 8.05×10 −8 , and 7.57×10 −8 mol cm −2 s −1 at 925°C for SDC-LBCO, SDC-NBCO, SDC-SBCO, and SDC-YBCO membranes, respectively. Increasing the flow rate of feeding and sweeping gas can create oxygen partial pressure gradient, and thus, increase the oxygen permeability. These results indicate that SDC-LBCO and SDC-NBCO composites are promising candidates for oxygen permeation membrane.

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“…An unique set of transport, thermomechanical and interfacial properties of perovskite-like LnBaCo 2 O 5+δ (Ln¼Pr-Ho, Y) makes it possible to use these materials for fuel cell electrodes and oxygenpermeable membranes [1][2][3][4] and attracts significant attention during last years [5][6][7][8][9]. Due to the large difference between the ionic radii of Ln 3+ and Ba 2+ , these cations are located in separate layers of the LnBaCo 2 O 5+δ structure, leading to doubling of c-parameter in the resultant tetragonal unit cell (a p Â a p Â 2a p ).…”

Section: Introductionmentioning

confidence: 99%

“…Important advantages of the cobaltates with the double perovskite structure as potential cathode materials for solid oxide fuel cells (SOFCs) include a high electronic conductivity in combination with fast oxygen diffusion and interfacial oxygen exchange, which are often superior with respect to the disordered perovskite analogs. These materials exhibit also, however, high chemical reactivity with solid oxide electrolytes [1,2]. A common approach to solve this problem is related to doping.…”

Section: Introductionmentioning

confidence: 99%