A facile method to fabricate proton-conducting BaZr0·85Y0·15O3-δ electrolyte with a large grain size and high conductivity

Lin Ge; Jiahui Jiao; Zongchao zhu; Qixi Zhang; Yifeng Zheng; Han Chen; Lucun Guo

doi:10.1016/j.ceramint.2019.08.202

A facile method to fabricate proton-conducting BaZr_0·85Y_0·15O_3-δ electrolyte with a large grain size and high conductivity

Lin Ge, Jiahui Jiao, Zongchao zhu, Qixi Zhang, Yifeng Zheng, Han Chen, Lucun Guo

材料科学与工程学院

Nanjing Tech University

科研成果: 期刊稿件 › 文章 › 同行评审

16 引用（Scopus）

摘要

Y-doped BaZrO₃ has been widely investigated as an electrolyte material for intermediate-temperature solid oxide fuel cells, However, its poor sinterability and high grain boundary resistance are major barriers to its practical application. In the present research, large-grained and high-conductive BaZr_0·85Y_0·15O_3-δ (BZY15) electrolytes are fabricated via a facile method using Ba(NO₃)₂ and (ZrO₂)_0·92(Y₂O₃)_0.08 as the starting materials. For comparison, BaCO₃ and Ba(CH₃COO)₂ are also used as Ba sources to prepare BZY15. Micro-analysis indicates that BZY15 powders with large particle sizes and a homogenous morphology could be obtained at very low temperature due to the liquid phase environment provided by Ba(NO₃)₂. The Ba(NO₃)₂-derived pellet presents a homogeneous composition, in contrast to the Y segregation observed in the BaCO₃- and Ba(CH₃COO)₂-derived pellets after sintering. Moreover, the widely used sintering aid, NiO, could further improve the sinterability and electrical properties of BZY15. The resulting BZY15 electrolyte shows a high conductivity of 3.9 × 10⁻³ S cm⁻¹ at 600 °C.

源语言	英语
页（从-至）	24946-24952
页数	7
期刊	Ceramics International
卷	45
期	18
DOI	https://doi.org/10.1016/j.ceramint.2019.08.202
出版状态	已出版 - 15 12月 2019

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10.1016/j.ceramint.2019.08.202

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@article{c19873748f01470eb6f392abf6c8289c,

title = "A facile method to fabricate proton-conducting BaZr0·85Y0·15O3-δ electrolyte with a large grain size and high conductivity",

abstract = "Y-doped BaZrO3 has been widely investigated as an electrolyte material for intermediate-temperature solid oxide fuel cells, However, its poor sinterability and high grain boundary resistance are major barriers to its practical application. In the present research, large-grained and high-conductive BaZr0·85Y0·15O3-δ (BZY15) electrolytes are fabricated via a facile method using Ba(NO3)2 and (ZrO2)0·92(Y2O3)0.08 as the starting materials. For comparison, BaCO3 and Ba(CH3COO)2 are also used as Ba sources to prepare BZY15. Micro-analysis indicates that BZY15 powders with large particle sizes and a homogenous morphology could be obtained at very low temperature due to the liquid phase environment provided by Ba(NO3)2. The Ba(NO3)2-derived pellet presents a homogeneous composition, in contrast to the Y segregation observed in the BaCO3- and Ba(CH3COO)2-derived pellets after sintering. Moreover, the widely used sintering aid, NiO, could further improve the sinterability and electrical properties of BZY15. The resulting BZY15 electrolyte shows a high conductivity of 3.9 × 10−3 S cm−1 at 600 °C.",

keywords = "Ba source, BaZrO, Conductivity, Electrolyte, Proton conductor",

author = "Lin Ge and Jiahui Jiao and Zongchao zhu and Qixi Zhang and Yifeng Zheng and Han Chen and Lucun Guo",

note = "Publisher Copyright: {\textcopyright} 2019 Elsevier Ltd and Techna Group S.r.l.",

year = "2019",

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doi = "10.1016/j.ceramint.2019.08.202",

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TY - JOUR

T1 - A facile method to fabricate proton-conducting BaZr0·85Y0·15O3-δ electrolyte with a large grain size and high conductivity

AU - Ge, Lin

AU - Jiao, Jiahui

AU - zhu, Zongchao

AU - Zhang, Qixi

AU - Zheng, Yifeng

AU - Chen, Han

AU - Guo, Lucun

PY - 2019/12/15

Y1 - 2019/12/15

N2 - Y-doped BaZrO3 has been widely investigated as an electrolyte material for intermediate-temperature solid oxide fuel cells, However, its poor sinterability and high grain boundary resistance are major barriers to its practical application. In the present research, large-grained and high-conductive BaZr0·85Y0·15O3-δ (BZY15) electrolytes are fabricated via a facile method using Ba(NO3)2 and (ZrO2)0·92(Y2O3)0.08 as the starting materials. For comparison, BaCO3 and Ba(CH3COO)2 are also used as Ba sources to prepare BZY15. Micro-analysis indicates that BZY15 powders with large particle sizes and a homogenous morphology could be obtained at very low temperature due to the liquid phase environment provided by Ba(NO3)2. The Ba(NO3)2-derived pellet presents a homogeneous composition, in contrast to the Y segregation observed in the BaCO3- and Ba(CH3COO)2-derived pellets after sintering. Moreover, the widely used sintering aid, NiO, could further improve the sinterability and electrical properties of BZY15. The resulting BZY15 electrolyte shows a high conductivity of 3.9 × 10−3 S cm−1 at 600 °C.

AB - Y-doped BaZrO3 has been widely investigated as an electrolyte material for intermediate-temperature solid oxide fuel cells, However, its poor sinterability and high grain boundary resistance are major barriers to its practical application. In the present research, large-grained and high-conductive BaZr0·85Y0·15O3-δ (BZY15) electrolytes are fabricated via a facile method using Ba(NO3)2 and (ZrO2)0·92(Y2O3)0.08 as the starting materials. For comparison, BaCO3 and Ba(CH3COO)2 are also used as Ba sources to prepare BZY15. Micro-analysis indicates that BZY15 powders with large particle sizes and a homogenous morphology could be obtained at very low temperature due to the liquid phase environment provided by Ba(NO3)2. The Ba(NO3)2-derived pellet presents a homogeneous composition, in contrast to the Y segregation observed in the BaCO3- and Ba(CH3COO)2-derived pellets after sintering. Moreover, the widely used sintering aid, NiO, could further improve the sinterability and electrical properties of BZY15. The resulting BZY15 electrolyte shows a high conductivity of 3.9 × 10−3 S cm−1 at 600 °C.

KW - Ba source

KW - BaZrO

KW - Conductivity

KW - Electrolyte

KW - Proton conductor

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U2 - 10.1016/j.ceramint.2019.08.202

DO - 10.1016/j.ceramint.2019.08.202

M3 - 文章

AN - SCOPUS:85071095079

SN - 0272-8842

VL - 45

SP - 24946

EP - 24952

JO - Ceramics International

JF - Ceramics International

IS - 18

ER -

A facile method to fabricate proton-conducting BaZr0·85Y0·15O3-δ electrolyte with a large grain size and high conductivity

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A facile method to fabricate proton-conducting BaZr_0·85Y_0·15O_3-δ electrolyte with a large grain size and high conductivity