Conductivity of Mn and Ni-doped stabilized zirconia electrolyte

herle, Jan Van; Vasquez, Ruben

doi:10.1016/s0955-2219(03)00471-0

Cited by 66 publications

(37 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The measured Rs values were always larger than the total of the theoretical contributions by a factor of approximately four. This has been observed in several studies of thin electrolyte cells (see [6] and [8] and references therein). Both Mn and Ni are soluble in zirconia to a small extent and both have an adverse effect on the oxide ion conductivity [7][8][9].…”

Section: Thicknesses Of Electrolyte and Cathodesupporting

confidence: 68%

“…This has been observed in several studies of thin electrolyte cells (see [6] and [8] and references therein). Both Mn and Ni are soluble in zirconia to a small extent and both have an adverse effect on the oxide ion conductivity [7][8][9]. Post-test investigations of the electrolytes by SEM/EDS revealed the presence of 1-2% Ni in the electrolyte, whereas the Mn content was very low (<0.3%, [10]).…”

Section: Thicknesses Of Electrolyte and Cathodesupporting

confidence: 68%

See 1 more Smart Citation

Properties and Performance of SOFCs Produced on a Pre‐Pilot Plant Scale

et al. 2006

View full text Add to dashboard Cite

In the present paper, anode supported solid oxide fuel cells (SOFCs), produced on a pre‐pilot plant scale in ten batches of ∼100 cells, are characterised with respect to performance. The main purpose was to evaluate the reproducibility of the scaled‐up process. Based on 20 tests, the average area specific cell resistance at 850 °C was found to be 0.24 Ω cm2 with a standard deviation of 0.05 Ω cm2. The variation in performance between the cells can be largely attributed to variations in the cathode performance. Experimental evidence will be presented on full 4 × 4 cm2 cells, symmetric cells with two cathodes on a YSZ strip, and a special cell with a divided cathode.

show abstract

Section: Thicknesses Of Electrolyte and Cathodesupporting

confidence: 68%

Section: Thicknesses Of Electrolyte and Cathodesupporting

confidence: 68%

Properties and Performance of SOFCs Produced on a Pre‐Pilot Plant Scale

et al. 2006

View full text Add to dashboard Cite

show abstract

“…Other way used and described on literature to increase 8%YSZ densification is the addition of NiO (in proportions of 40-60 wt.%) [20]. Van Herle and Vasquez [25] observed fast densification of 8%YSZ with the addition of small amounts of NiO (1.5% in mol). Recently, Zhang et al [26] reported an improvement on 8%YSZ densification with NiO addition.…”

Section: Resultsmentioning

confidence: 99%

Evaluation of electrical conductivity and density of 8 mol% yttria-stabilized zirconia produced by Spark Plasma Sintering

Polla¹,

Valentini²,

Junior³

et al. 2016

Blucher Chemistry Proceedings

View full text Add to dashboard Cite

In this work, 8 mol% yttria-stabilized zirconia (8%YSZ) containing micro or nanoparticles were manufactured by Spark Plasma Sintering technique, in order to improve sample densification and control grain growth. The electrical conductivity of dense 8%YSZ pellets sintered was investigated by electrochemical impedance spectroscopy (EIS). Preliminary results showed for samples produced from both micro and nanoparticle sintered at 1000 °C for 5 min, the relative density is approximately 98 %, while for the others samples sintered at 1200 °C the density is above 99 %. These densities are higher in comparison to the same composite sintered by conventional method. The electrical measurements were carried out at 500 °C in air and the best results were obtained for samples with nano particle size in comparison with micro granulometry. The SPS process allows using lower temperatures and shorter times to produce materials with high density and controlled grain growth.

show abstract

“…Figure 2b shows typical Nyquist plots of the 0 and 3 wt% NiO doped YSZ ceramics at 400 o C in air. In both cases, the arcs at the lower and higher frequencies are due to the resistances of the grain boundary and grain bulk, respectively [26]. Since the previous paper [24] suggested 8YSZ containing NiO up to ca.…”

Section: Electrical Properties Of Nio-ysz Ceramicsmentioning

confidence: 89%

Surface micromachining via solid electrochemical reaction on oxide ion conductors

et al. 2009

View full text Add to dashboard Cite

We propose a simple and novel route for the surface microstructuring of tough materials (glassy carbon, SiC, W and Mo) through a solid electrochemical reaction at a microcontact between the oxide ion conductor and target substrate. More specifically, the surface of materials was locally oxidized by an anodic electrochemical reaction with the oxide ion conductor via the microcontact under a dc bias. Since the oxidation products of the targets were gaseous or sublimable, a fine-patterned surface was obtained as a result of the continuous consumption of the oxidation products formed at the microcontact. The success of the proposed method may stimulate such conventional applications of oxide ion conductors.

show abstract

Conductivity of Mn and Ni-doped stabilized zirconia electrolyte

Cited by 66 publications

References 3 publications

Properties and Performance of SOFCs Produced on a Pre‐Pilot Plant Scale

Properties and Performance of SOFCs Produced on a Pre‐Pilot Plant Scale

Evaluation of electrical conductivity and density of 8 mol% yttria-stabilized zirconia produced by Spark Plasma Sintering

Surface micromachining via solid electrochemical reaction on oxide ion conductors

Contact Info

Product

Resources

About