Taguchi design of experiments for optimization of ionic conductivity in nanocrystalline Gadolinium doped Ceria

Kulkarni, Shrikant; Duttagupta, Siddhartha P.; Phatak, Girish

doi:10.1016/j.ceramint.2015.03.171

Cited by 11 publications

(5 citation statements)

References 13 publications

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“…Therefore, synthesizing alternative electrolyte powders with a higher ionic conductivity and an improved thermal stability is crucial to fabricate SOFCs operating at reduced temperatures [5]. Recently, Gadolinium doped ceria (GDC) has seen extensive consideration as an attractive electrolyte material suitable for low-and intermediate-temperature SOFCs operating at 500-700°C [11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Ionic–gelation synthesis of gadolinium doped ceria (Ce 0.8 Gd 0.2 O 1.90 ) nanocomposite powder using sodium-alginate

Pezeshkpour

Abdullah

Salamatinia

et al. 2017

Ceramics International

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Section: Introductionmentioning

confidence: 99%

Ionic–gelation synthesis of gadolinium doped ceria (Ce 0.8 Gd 0.2 O 1.90 ) nanocomposite powder using sodium-alginate

Pezeshkpour

Abdullah

Salamatinia

et al. 2017

Ceramics International

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“…The Taguchi method is a design of experiments to reach optimum control factors by determination of the control factor settings and their levels . Taguchi design reduces the number of experiments required for obtaining optimal conditions and determines the relationship between inputs and outputs .…”

Section: Methodsmentioning

confidence: 99%

Fabrication of superhydrophobic unplasticized poly(vinyl chloride)/nanosilica sheets using Taguchi design methodology

et al. 2017

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This study introduces a relatively simple technique for the manufacture of superhydrophobic coatings on polymeric surfaces. Plastics such as unplasticized poly(vinyl chloride) (UPVC) do not have a strong hydrophobic nature that is characterized by their low contact angles. Techniques of both increasing surface roughness and lowering surface energy are required to change their hydrophilicity to superhydrophobicity. In the present study, a coating of a low-surface-energy thermoplastic polyurethane (TPU) was spin-coated with chemically treated nanosilica to reduce the surface energy of UPVC. Nanosilica particles were embedded on the surface using a hot-press. Taguchi design was used to optimize multiple processing parameters. Samples spin-coated with 10 g L −1 nanosilica suspension in ethanol at a rate of 400 rpm for 5 s and then hot-pressed at 155 ∘ C under 2 atm (203 kPa) for 4 min had a contact angle of ca 157 ∘ and sliding angle of ca 6 ∘ , which are characteristic of superhydrophobic surfaces. Atomic force microscopy (AFM) and scanning electron microscopy (SEM) imaging showed that these superhydrophobic surfaces were highly rough with nanoscale features. Peel test and SEM analysis showed that silica nanoparticles embedded in the TPU coating were more stable than particles immobilized on UPVC sheet without TPU coating, proving that a layer of more flexible coating can improve the longevity of superhydrophobic surfaces manufactured using this facile method.

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“…Powder with a higher surface area, smaller particle size, and no hard agglomerates should lower sintering temperature. Different types of synthesis methods are used for the preparation of Ceria based materials like solid-state reaction (15), polyol method (16), pechini method (17), glycine-nitrate process( 18)-( 20), co-precipitation method( 21), (22), sol-gel method( 23)- (25), and hydrothermal method (26). The co-precipitation method has certain advantages over others like being comparatively simple, less temperature and time required.…”

Section: Introductionmentioning

confidence: 99%

Shrinkage Behavior, Thermal Expansion Behavior, and Electrical Conductivity Study of Samarium Doped Ceria Electrolytes

2021

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In the present study, sintering behavior and electrical conductivity of Sm doped Ceria (SDC) and multi-doped (Sm/Pr/Li) Ceria electrolytes synthesized by microwave-assisted co-precipitation method is studied. SDC green pellet displayed a unimodal shrinkage behavior with a linear shrinkage of 15.67% along with a slight dedensification above 1350℃. An increase in electrical conductivity with an increase in sintering temperature from 1200 to 1300℃ was observed. Further increasing the sintering temperature (1400 and 1500℃) electrical conductivity decreased, which could be due to dedensification (as observed in sintering behavior). At 600℃, the electrical conductivity of SDC1200 is around 1.34 × 10-2 S cm-1. The sintering temperature is drastically decreased to 850℃ from 1200℃ with the addition of Li, and the electrical conductivity is increased with the addition of Pr to SDC electrolytes. At 600℃, the electrical conductivity of 3Li-SPDC850 sintered at 850℃ is 1.44 × 10-2 S cm-1. The thermal expansion coefficient (TEC) of the electrolytes studied were in the range of 12.7 × 10-6 to 17.6 × 10-6 K-1.

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Taguchi design of experiments for optimization of ionic conductivity in nanocrystalline Gadolinium doped Ceria

Cited by 11 publications

References 13 publications

Ionic–gelation synthesis of gadolinium doped ceria (Ce 0.8 Gd 0.2 O 1.90 ) nanocomposite powder using sodium-alginate

Ionic–gelation synthesis of gadolinium doped ceria (Ce 0.8 Gd 0.2 O 1.90 ) nanocomposite powder using sodium-alginate

Fabrication of superhydrophobic unplasticized poly(vinyl chloride)/nanosilica sheets using Taguchi design methodology

Shrinkage Behavior, Thermal Expansion Behavior, and Electrical Conductivity Study of Samarium Doped Ceria Electrolytes

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