Novel Cathodes for Low-Temperature Solid Oxide Fuel Cells

Xia, Changrong; Liu, Meilin

doi:10.1002/1521-4095(20020404)14:7<521::aid-adma521>3.0.co;2-c

Cited by 248 publications

(154 citation statements)

References 13 publications

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“…The nickel oxide used for this process was all derived form the glycine-nitrate process and then post treated at either 500 o C (NiO [1]) or 800 o C (NiO [2]). Likewise, the GDC was derived from glycine-nitrate, but the same powder was used in all samples.…”

Section: Anodementioning

confidence: 99%

“…Finally, two samples contained YSZ, which was derived from either glycine-nitrate (GN) or commercial YSZ (Comm). Sample 1, composed of 65 wt% NiO [1] 8 wt% GDC and 27 wt% YSZ (GN). Sample 2 was composed of 65 wt% NiO [1] and 35 wt% GDC.…”

Section: Anodementioning

confidence: 99%

“…Sample 1, composed of 65 wt% NiO [1] 8 wt% GDC and 27 wt% YSZ (GN). Sample 2 was composed of 65 wt% NiO [1] and 35 wt% GDC. The third sample is identical to sample 2, except that it substitutes the coarser NiO [2] for the NiO [1].…”

Section: Anodementioning

confidence: 99%

“…Sample 2 was composed of 65 wt% NiO [1] and 35 wt% GDC. The third sample is identical to sample 2, except that it substitutes the coarser NiO [2] for the NiO [1]. Finally, the fourth sample was the same as sample 1, except with commercial YSZ powder.…”

Section: Anodementioning

confidence: 99%

See 3 more Smart Citations

Hybrid Metal/Electrolyte Monolithic Low Temperature SOFCs

Cochran¹,

Lee²,

Liu³

et al. 2004

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Section: Anodementioning

confidence: 99%

Section: Anodementioning

confidence: 99%

Section: Anodementioning

confidence: 99%

Section: Anodementioning

confidence: 99%

See 2 more Smart Citations

Hybrid Metal/Electrolyte Monolithic Low Temperature SOFCs

Cochran¹,

Lee²,

Liu³

et al. 2004

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“…However, reducing the operating temperature decreases the electrode kinetics and results in large interfacial polarization resistances. This effect is most pronounced for the oxygen reduction reaction at the cathode [4,5]. Essential to the design of high performance electrodes are favorable electronic and ionic conductivities as well as high catalytic activities for oxygen reduction reactions in order to lower the polarization resistance of the cathode [6].…”

Section: Introductionmentioning

confidence: 99%

Ba1−xPrxCo1−yFeyO3−δ as cathode materials for low temperature solid oxide fuel cells

Hui

Sun

Yick

et al. 2010

Electrochimica Acta

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Novel Nanostructured Electrodes for Solid Oxide Fuel Cells Fabricated by Combustion Chemical Vapor Deposition (CVD)

Liu¹,

Zha²,

Liu³

2004

Advanced Materials

124

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SThM probe would have provided a low-resistance path from the cathode to earth. The SThM system was used to measure surface temperature by placing the probe in contact with the surface of the LED cathode. The SThM probe (an ultra-miniaturized resistance temperature detector) was constructed from Wollaston wire consisting of a 75 lm diameter silver wire with a 5 lm diameter 90 % platinum/10 % rhodium core. The wire was made into a loop with a radius of curvature of about 30. Where the loop was formed, the silver was etched away revealing the platinum/rhodium core. The two silver arms formed a cantilever structure across which a mirror was attached for force monitoring using laser beam deflection. The probe was mounted on an Explorer scanning probe microscope manufactured by Veeco. The LED was mounted on the Explorer microscope stage on a magnetic metal plate using a small quantity of superglue.To calibrate the SThM probe, it was first placed in contact with a calibrated hot stage, and the voltage output from the probe was measured at a series of different hot-stage temperatures. The SThM was then used to measure the temperature at the centre of each LED pixel as a current±voltage scan was recorded. The centre of the LED was first located by using the SThM to create a topographic map of the surface. The probe was then moved to the centre of the device and a current±voltage±temperature ramp was recorded at approximately 10 s per voltage interval. As discussed in the text, the LEDs reached their final operating temperature in a time of 4 s or less. The temporal resolution of the SThM system in our experimental configuration was 0.25 s, thus the temperature recorded by the SThM in a current±volt-age±temperature measurement can be considered as an equilibrium temperature for each particular power input. Note that all measurements were made in air.Current±voltage±luminance measurements were also made on a series of representative LEDs using in a nitrogen-filled glove-box. Luminance was measured from standard area LEDs using a calibrated luminance meter. The luminance of the small area LEDs was measured using a photodiode, which had been previously calibrated against a standard-area LED operating at a known brightness. A correction factor was applied to the photodiode response function to account for the difference in emissive areas between the small area and standard area devices.The external quantum efficiency (u Ext ) (photons per injected charge) was determined from the LED efficiency (in terms of cd A ±1 ) using a photo-optic conversion factor [26]. The external power efficiency (P) was calculated [27] using P = u Ext E p /eV LED , where E p is the EL photon energy in Joules and V LED is the applied LED bias. Low-temperature solid oxide fuel cells (SOFCs) have attracted much attention in recent years because of their potential to dramatically reduce the cost of the materials and cell fabrication in addition to improved reliability, portability, and operational life.[1±6] To lower the resistance of dense electrolyte ...

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Novel Cathodes for Low-Temperature Solid Oxide Fuel Cells

Cited by 248 publications

References 13 publications

Hybrid Metal/Electrolyte Monolithic Low Temperature SOFCs

Hybrid Metal/Electrolyte Monolithic Low Temperature SOFCs

Ba1−xPrxCo1−yFeyO3−δ as cathode materials for low temperature solid oxide fuel cells

Novel Nanostructured Electrodes for Solid Oxide Fuel Cells Fabricated by Combustion Chemical Vapor Deposition (CVD)

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