Electrical conductivity improvement of Nd2Ce2O 7 ceramic co-doped with Gd2O3 and ZrO 2

Z. G. Liu; J. H. Ouyang; K. N. Sun

doi:10.1002/fuce.201000184

Electrical conductivity improvement of Nd₂Ce₂O ₇ ceramic co-doped with Gd₂O₃ and ZrO ₂

Z. G. Liu^*, J. H. Ouyang, K. N. Sun

^*Corresponding author for this work

Harbin Institute of Technology

Research output: Contribution to journal › Article › peer-review

33 Citations (Scopus)

Abstract

(Nd_1-xGd_x)₂(Ce _1-xZr_x)₂O₇ (0 ≤ x ≤ 0.5) ceramic powders synthesised by the chemical-coprecipitation and calcination method were pressureless-sintered at 1,973 K for 10 h in air. The structure and electrical conductivity of (Nd_1-xGd_x) ₂(Ce_1-xZr_x)₂O₇ ceramics were investigated by the X-ray diffraction and impedance spectroscopy measurements. (Nd_1-xGd_x)₂(Ce _1-xZr_x)₂O₇ (0 ≤ x ≤ 0.5) ceramics exhibit a single phase of defect fluorite-type structure. The electrical conductivity of (Nd_1-xGd_x) ₂(Ce_1-xZr_x)₂O ₇ ceramics increases with temperature in the range 623-1,173 K following an Arrhenius law. At identical temperature levels, the measured electrical conductivity of (Nd_1-xGd_x) ₂(Ce_1-xZr_x)₂O ₇ ceramics varies with doping different Gd₂O₃ and ZrO₂ contents and exhibits a maximum at x = 0.1.

Original language	English
Pages (from-to)	153-157
Number of pages	5
Journal	Fuel Cells
Volume	11
Issue number	2
DOIs	https://doi.org/10.1002/fuce.201000184
Publication status	Published - Apr 2011
Externally published	Yes

Keywords

(Nd Gd)(Ce Zr)O
Ceramics
Electrical Conductivity
Impedance Spectroscopy

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1002/fuce.201000184

Cite this

@article{3b4800aad8e84a4a9ad99d19d71a1938,

title = "Electrical conductivity improvement of Nd2Ce2O 7 ceramic co-doped with Gd2O3 and ZrO 2",

abstract = "(Nd1-xGdx)2(Ce 1-xZrx)2O7 (0 ≤ x ≤ 0.5) ceramic powders synthesised by the chemical-coprecipitation and calcination method were pressureless-sintered at 1,973 K for 10 h in air. The structure and electrical conductivity of (Nd1-xGdx) 2(Ce1-xZrx)2O7 ceramics were investigated by the X-ray diffraction and impedance spectroscopy measurements. (Nd1-xGdx)2(Ce 1-xZrx)2O7 (0 ≤ x ≤ 0.5) ceramics exhibit a single phase of defect fluorite-type structure. The electrical conductivity of (Nd1-xGdx) 2(Ce1-xZrx)2O 7 ceramics increases with temperature in the range 623-1,173 K following an Arrhenius law. At identical temperature levels, the measured electrical conductivity of (Nd1-xGdx) 2(Ce1-xZrx)2O 7 ceramics varies with doping different Gd2O3 and ZrO2 contents and exhibits a maximum at x = 0.1.",

keywords = "(Nd Gd)(Ce Zr)O, Ceramics, Electrical Conductivity, Impedance Spectroscopy",

author = "Liu, \{Z. G.\} and Ouyang, \{J. H.\} and Sun, \{K. N.\}",

year = "2011",

month = apr,

doi = "10.1002/fuce.201000184",

language = "English",

volume = "11",

pages = "153--157",

journal = "Fuel Cells",

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T1 - Electrical conductivity improvement of Nd2Ce2O 7 ceramic co-doped with Gd2O3 and ZrO 2

AU - Liu, Z. G.

AU - Ouyang, J. H.

AU - Sun, K. N.

PY - 2011/4

Y1 - 2011/4

N2 - (Nd1-xGdx)2(Ce 1-xZrx)2O7 (0 ≤ x ≤ 0.5) ceramic powders synthesised by the chemical-coprecipitation and calcination method were pressureless-sintered at 1,973 K for 10 h in air. The structure and electrical conductivity of (Nd1-xGdx) 2(Ce1-xZrx)2O7 ceramics were investigated by the X-ray diffraction and impedance spectroscopy measurements. (Nd1-xGdx)2(Ce 1-xZrx)2O7 (0 ≤ x ≤ 0.5) ceramics exhibit a single phase of defect fluorite-type structure. The electrical conductivity of (Nd1-xGdx) 2(Ce1-xZrx)2O 7 ceramics increases with temperature in the range 623-1,173 K following an Arrhenius law. At identical temperature levels, the measured electrical conductivity of (Nd1-xGdx) 2(Ce1-xZrx)2O 7 ceramics varies with doping different Gd2O3 and ZrO2 contents and exhibits a maximum at x = 0.1.

AB - (Nd1-xGdx)2(Ce 1-xZrx)2O7 (0 ≤ x ≤ 0.5) ceramic powders synthesised by the chemical-coprecipitation and calcination method were pressureless-sintered at 1,973 K for 10 h in air. The structure and electrical conductivity of (Nd1-xGdx) 2(Ce1-xZrx)2O7 ceramics were investigated by the X-ray diffraction and impedance spectroscopy measurements. (Nd1-xGdx)2(Ce 1-xZrx)2O7 (0 ≤ x ≤ 0.5) ceramics exhibit a single phase of defect fluorite-type structure. The electrical conductivity of (Nd1-xGdx) 2(Ce1-xZrx)2O 7 ceramics increases with temperature in the range 623-1,173 K following an Arrhenius law. At identical temperature levels, the measured electrical conductivity of (Nd1-xGdx) 2(Ce1-xZrx)2O 7 ceramics varies with doping different Gd2O3 and ZrO2 contents and exhibits a maximum at x = 0.1.

KW - (Nd Gd)(Ce Zr)O

KW - Ceramics

KW - Electrical Conductivity

KW - Impedance Spectroscopy

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