Effect of titania concentration on the grain boundary conductivity of Ce0.8Gd0.2O1.9 electrolyte

Lin Ge; Ruifeng Li; Shoucheng He; Han Chen; Lucun Guo

doi:10.1016/j.ijhydene.2012.08.031

Effect of titania concentration on the grain boundary conductivity of Ce_0.8Gd_0.2O_1.9 electrolyte

Lin Ge, Ruifeng Li, Shoucheng He, 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

22 引用（Scopus）

摘要

The effect of titania (TiO₂) addition on the densification, crystal structure and electrical property of Ce_0.8Gd _0.2O_1.9 (GDC) are examined. TiO₂ addition reduces GDC sintering temperature by ∼200 °C and considerably improves grain boundary conduction. The minimum grain boundary resistivity is obtained at 0.8 mol% TiO₂ concentration. XRD analysis suggests that the solubility limit of TiO₂ in GDC is ∼0.6 mol%. The optimum doping level (0.8 mol%) is slightly higher than the solubility limit (0.6 mol%), which implies that a small amounts of TiO₂ (∼0.2 mol%) at the grain boundaries benefits the grain-boundary conduction.

源语言	英语
页（从-至）	16123-16129
页数	7
期刊	International Journal of Hydrogen Energy
卷	37
期	21
DOI	https://doi.org/10.1016/j.ijhydene.2012.08.031
出版状态	已出版 - 11月 2012

联合国可持续发展目标

此成果有助于实现下列可持续发展目标：

访问文件

10.1016/j.ijhydene.2012.08.031

其它文件与链接

链接到 Scopus 的出版物

引用此

@article{f1b01b5139bb49269f56cae0cd179b7c,

title = "Effect of titania concentration on the grain boundary conductivity of Ce0.8Gd0.2O1.9 electrolyte",

abstract = "The effect of titania (TiO2) addition on the densification, crystal structure and electrical property of Ce0.8Gd 0.2O1.9 (GDC) are examined. TiO2 addition reduces GDC sintering temperature by ∼200 °C and considerably improves grain boundary conduction. The minimum grain boundary resistivity is obtained at 0.8 mol% TiO2 concentration. XRD analysis suggests that the solubility limit of TiO2 in GDC is ∼0.6 mol%. The optimum doping level (0.8 mol%) is slightly higher than the solubility limit (0.6 mol%), which implies that a small amounts of TiO2 (∼0.2 mol%) at the grain boundaries benefits the grain-boundary conduction.",

keywords = "Doped ceria, Grain-boundary conduction, Solid oxide fuel cell, Titania",

author = "Lin Ge and Ruifeng Li and Shoucheng He and Han Chen and Lucun Guo",

year = "2012",

month = nov,

doi = "10.1016/j.ijhydene.2012.08.031",

language = "英语",

volume = "37",

pages = "16123--16129",

journal = "International Journal of Hydrogen Energy",

issn = "0360-3199",

publisher = "Elsevier Ltd",

number = "21",

}

TY - JOUR

T1 - Effect of titania concentration on the grain boundary conductivity of Ce0.8Gd0.2O1.9 electrolyte

AU - Ge, Lin

AU - Li, Ruifeng

AU - He, Shoucheng

AU - Chen, Han

AU - Guo, Lucun

PY - 2012/11

Y1 - 2012/11

N2 - The effect of titania (TiO2) addition on the densification, crystal structure and electrical property of Ce0.8Gd 0.2O1.9 (GDC) are examined. TiO2 addition reduces GDC sintering temperature by ∼200 °C and considerably improves grain boundary conduction. The minimum grain boundary resistivity is obtained at 0.8 mol% TiO2 concentration. XRD analysis suggests that the solubility limit of TiO2 in GDC is ∼0.6 mol%. The optimum doping level (0.8 mol%) is slightly higher than the solubility limit (0.6 mol%), which implies that a small amounts of TiO2 (∼0.2 mol%) at the grain boundaries benefits the grain-boundary conduction.

AB - The effect of titania (TiO2) addition on the densification, crystal structure and electrical property of Ce0.8Gd 0.2O1.9 (GDC) are examined. TiO2 addition reduces GDC sintering temperature by ∼200 °C and considerably improves grain boundary conduction. The minimum grain boundary resistivity is obtained at 0.8 mol% TiO2 concentration. XRD analysis suggests that the solubility limit of TiO2 in GDC is ∼0.6 mol%. The optimum doping level (0.8 mol%) is slightly higher than the solubility limit (0.6 mol%), which implies that a small amounts of TiO2 (∼0.2 mol%) at the grain boundaries benefits the grain-boundary conduction.

KW - Doped ceria

KW - Grain-boundary conduction

KW - Solid oxide fuel cell

KW - Titania

UR - http://www.scopus.com/inward/record.url?scp=84867403234&partnerID=8YFLogxK

U2 - 10.1016/j.ijhydene.2012.08.031

DO - 10.1016/j.ijhydene.2012.08.031

M3 - 文章

AN - SCOPUS:84867403234

SN - 0360-3199

VL - 37

SP - 16123

EP - 16129

JO - International Journal of Hydrogen Energy

JF - International Journal of Hydrogen Energy

IS - 21

ER -

Effect of titania concentration on the grain boundary conductivity of Ce0.8Gd0.2O1.9 electrolyte

摘要

联合国可持续发展目标

访问文件

其它文件与链接

指纹

引用此

Effect of titania concentration on the grain boundary conductivity of Ce_0.8Gd_0.2O_1.9 electrolyte