The effect of Zn addition on the structure and transport properties of BaCe0.9−xZrxY0.1O3−δ

Amsif, M.; Marrero-López, D.; Ruiz-Morales, J.C.; Саввин, С.Н.; Núñez, P.

doi:10.1016/j.jeurceramsoc.2013.12.008

Cited by 52 publications

(26 citation statements)

References 35 publications

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“…We find that many of the additives (such as Fe2O3 and MnO2) lead to only minimal improvements in the pellet grain size and actually cause a decrease in total conductivity. ZnO, while proving to be an excellent densification aid, also produces pellets with a minor decrease in total conductivity (a similar null/negative effect has also been observed by others) [12]. CuO and PdO dopants were the only additives to yield a total conductivity exceeding the BCZY63 control.…”

Section: Introductionsupporting

confidence: 78%

Ionic transport modification in proton conducting BaCe0.6Zr0.3Y0.1O3−δ with transition metal oxide dopants

et al. 2016

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Proton conducting BaCe0.6Zr0.3Y0.1O3-δ (BCZY63) pellets were fabricated by the solid-state reactive sintering method whereby a small extra amount of a metal oxide additive (5 mol%) was included in the precursor mixture before sintering. The effect of the addition of six different metal oxide additives (CuO, ZnO, Fe2O3, MnO2, PdO, and Cr2O3) on the transport properties of BCZY63 was investigated. Although most additives (e.g. ZnO, Fe2O3, MnO2, Cr2O3) led to a decrease (sometimes minor) in conductivity, CuO and PdO dopants yielded an increase in total conductivity compared to the BCZY63 control. The enhancement in the total conductivity is found to be related to two factors: 1) the additive can act as a sintering aid to produce larger grain size; 2) substitutional doping of the BCZY structure by metal ions from additives can lead to increased bulk proton concentration. Due to its excellent sinterability and moderately improved proton conductivity, CuO-doped BCZY63 was subsequently applied as the dense electrolyte layer in protonic ceramic fuel cells utilizing a recently developed single firing step fabrication technique to produce high quality single cells that showed exceptional performance and long-term stability.

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Section: Introductionsupporting

confidence: 78%

Ionic transport modification in proton conducting BaCe0.6Zr0.3Y0.1O3−δ with transition metal oxide dopants

et al. 2016

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“…Zinc oxide is the most widely used sintering additive for materials based on barium cerate and zirconate (Table 7) [66,90,[95][96][97][98][99][100]. The use of ZnO is considered by certain researchers not leading negative effect on electrical properties of electrolytes because zinc has a constant oxidation state in contrast to cobalt, nickel, and copper and its addition should not cause undesired growth of electron conductivity.…”

Section: Effect Of Zinc Oxidementioning

confidence: 99%

Formation of dense electrolytes based on BaCeO3 and BaZrO3 for application in solid oxide fuel cells: The role of solid-state reactive sintering

2015

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Methods of synthesis and formation of a high dense ceramic prepared from barium cerate and zirconate, which is applied as electrolyte in solid oxide fuel cells, are considered in the present work. The main attention is devoted to the relatively new strategy of solid state reactive sintering method, which consists in the introduction of small amounts of sintering additives to initial precur sors. Analysis of published data on the effect of sintering additives on the physicochemical and trans port properties of proton conducting electrolytes is carried out. Fig. 4. The microstructure of (a) BaCe 0.9 Gd 0.1 O 3 -δ ceramic samples sintered at 1600°С for 3 h and (b) BaCe 0.89 Gd 0.1 Cu 0.01 O 3 -δ sintered at 1450°С for 3 h [69].

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“…32 However, the addition of sintering aids tends to reduce total conductivity. 7,14,32,33 For example, partial NiO might not dissolve in the perovskite lattice structure; instead, it reacts with BZCY to form BaY 2 NiO 5 impurity phase, thereby reducing the conductivity and the open-circuit voltage (OCV). 32 ZnO acted as an excellent densification aid that could decrease sintering temperature to 1200°C-1300°C; however, the total conductivity slightly decreased after the addition of ZnO.…”

Section: Introductionmentioning

confidence: 99%

Enhancing the sinterability and electrical properties of BaZr_0.1Ce_0.7Y_0.2O_3‐δ proton‐conducting ceramic electrolyte

Wang

Yang

et al. 2020

J. Am. Ceram. Soc.

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A novel strategy was proposed to enhance the sinterability and electrical properties of BaZr 0.1 Ce 0.7 Y 0.2 O 3-δ (BZCY) proton-conducting electrolyte by adding 10 wt.% La 0.9 Sr 0.1 Ga 0.8 Mg 0.2 O 3-δ (LSGM) to form a 90 wt.% BZCY-10 wt.% LSGM (BL91) composite electrolyte. XRD patterns showed that no reaction occurred between How to cite this article: Yu S, Wang Z, Yang L, et al. Enhancing the sinterability and electrical properties of BaZr 0.1 Ce 0.7 Y 0.2 O 3-δ proton-conducting ceramic electrolyte.

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The effect of Zn addition on the structure and transport properties of BaCe0.9−xZrxY0.1O3−δ

Cited by 52 publications

References 35 publications

Ionic transport modification in proton conducting BaCe0.6Zr0.3Y0.1O3−δ with transition metal oxide dopants

Ionic transport modification in proton conducting BaCe0.6Zr0.3Y0.1O3−δ with transition metal oxide dopants

Formation of dense electrolytes based on BaCeO3 and BaZrO3 for application in solid oxide fuel cells: The role of solid-state reactive sintering

Enhancing the sinterability and electrical properties of BaZr_0.1Ce_0.7Y_0.2O_3‐δ proton‐conducting ceramic electrolyte

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The effect of Zn addition on the structure and transport properties of BaCe0.9−xZrxY0.1O3−δ

Cited by 52 publications

References 35 publications

Ionic transport modification in proton conducting BaCe0.6Zr0.3Y0.1O3−δ with transition metal oxide dopants

Ionic transport modification in proton conducting BaCe0.6Zr0.3Y0.1O3−δ with transition metal oxide dopants

Formation of dense electrolytes based on BaCeO3 and BaZrO3 for application in solid oxide fuel cells: The role of solid-state reactive sintering

Enhancing the sinterability and electrical properties of BaZr0.1Ce0.7Y0.2O3‐δ proton‐conducting ceramic electrolyte

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Enhancing the sinterability and electrical properties of BaZr_0.1Ce_0.7Y_0.2O_3‐δ proton‐conducting ceramic electrolyte