One-step synthesis of composite electrolytes of Eu-doped ceria and alkali metal carbonates

Europium-doped ceria (EDC, Ce0.9Eu0.1O2 d)/alkaline carbonate (LNC, (Li,Na)2CO3) composite ceramics prepared through a one-step citrate-based route were analyzed by powder X-ray diffraction, infrared and laser Raman spectroscopies as well as scanning and transmission electron microscopy. The electro...

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Principais autores: Nascimento, Rubens Maribondo do, Rajesh, Surendran, Macedo, Daniel Araújo de, Souza, Graziele Lopes de, Figueiredo, Filipe Miguel Henriques Lebre Ramos, Marques, Fernando M. B.
Formato: article
Idioma:English
Publicado em: Elsevier
Assuntos:
Composite electrolytes
Ceria
Electrical conductivity
One-step synthesis
Endereço do item:https://repositorio.ufrn.br/handle/123456789/46476
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spelling ri-123456789-464762023-02-07T20:34:09Z One-step synthesis of composite electrolytes of Eu-doped ceria and alkali metal carbonates Nascimento, Rubens Maribondo do Rajesh, Surendran Macedo, Daniel Araújo de Souza, Graziele Lopes de Figueiredo, Filipe Miguel Henriques Lebre Ramos Marques, Fernando M. B. Composite electrolytes Ceria Electrical conductivity One-step synthesis Europium-doped ceria (EDC, Ce0.9Eu0.1O2 d)/alkaline carbonate (LNC, (Li,Na)2CO3) composite ceramics prepared through a one-step citrate-based route were analyzed by powder X-ray diffraction, infrared and laser Raman spectroscopies as well as scanning and transmission electron microscopy. The electrochemical behavior of the electrolyte material was studied by impedance spectroscopy in air, CO2 and N2 þ H2 (90/10 vol%, respectively) gas mixtures, in the temperature range 300e600 C. The sub micrometric and even nanosized ceramic particles appeared as merged inside the mixed carbonates, with modest grain to grain necking. The EDC/LNC composite electrolytes showed a conductivity of 0.27 S cm 1 at 600 C in air, amongst the best ever reported, exceeding the usual requirements for fuel cell applications 2022-03-09T18:57:03Z 2022-03-09T18:57:03Z 2013-12-13 article RAJESH, Surendran; MACEDO, Daniel A.; NASCIMENTO, Rubens M.; SOUZA, Graziele L.; FIGUEIREDO, Filipe M. L.; MARQUES, Fernando M. B. One-step synthesis of composite electrolytes of Eu-doped ceria and alkali metal carbonates. International Journal of Hydrogen Energy, [S.L.], v. 38, n. 36, p. 16539-16545, dez. 2013. Disponível em: https://www.sciencedirect.com/science/article/abs/pii/S036031991301286X?via%3Dihub. Acesso em: 08 abr. 2021. http://dx.doi.org/10.1016/j.ijhydene.2013.05.090. 0360-3199 https://repositorio.ufrn.br/handle/123456789/46476 10.1016/j.ijhydene.2013.05.090 en Elsevier
institution Repositório Institucional
collection RI - UFRN
language English
topic Composite electrolytes
Ceria
Electrical conductivity
One-step synthesis
spellingShingle Composite electrolytes
Ceria
Electrical conductivity
One-step synthesis
Nascimento, Rubens Maribondo do
Rajesh, Surendran
Macedo, Daniel Araújo de
Souza, Graziele Lopes de
Figueiredo, Filipe Miguel Henriques Lebre Ramos
Marques, Fernando M. B.
One-step synthesis of composite electrolytes of Eu-doped ceria and alkali metal carbonates
description Europium-doped ceria (EDC, Ce0.9Eu0.1O2 d)/alkaline carbonate (LNC, (Li,Na)2CO3) composite ceramics prepared through a one-step citrate-based route were analyzed by powder X-ray diffraction, infrared and laser Raman spectroscopies as well as scanning and transmission electron microscopy. The electrochemical behavior of the electrolyte material was studied by impedance spectroscopy in air, CO2 and N2 þ H2 (90/10 vol%, respectively) gas mixtures, in the temperature range 300e600 C. The sub micrometric and even nanosized ceramic particles appeared as merged inside the mixed carbonates, with modest grain to grain necking. The EDC/LNC composite electrolytes showed a conductivity of 0.27 S cm 1 at 600 C in air, amongst the best ever reported, exceeding the usual requirements for fuel cell applications
format article
author Nascimento, Rubens Maribondo do
Rajesh, Surendran
Macedo, Daniel Araújo de
Souza, Graziele Lopes de
Figueiredo, Filipe Miguel Henriques Lebre Ramos
Marques, Fernando M. B.
author_facet Nascimento, Rubens Maribondo do
Rajesh, Surendran
Macedo, Daniel Araújo de
Souza, Graziele Lopes de
Figueiredo, Filipe Miguel Henriques Lebre Ramos
Marques, Fernando M. B.
author_sort Nascimento, Rubens Maribondo do
title One-step synthesis of composite electrolytes of Eu-doped ceria and alkali metal carbonates
title_short One-step synthesis of composite electrolytes of Eu-doped ceria and alkali metal carbonates
title_full One-step synthesis of composite electrolytes of Eu-doped ceria and alkali metal carbonates
title_fullStr One-step synthesis of composite electrolytes of Eu-doped ceria and alkali metal carbonates
title_full_unstemmed One-step synthesis of composite electrolytes of Eu-doped ceria and alkali metal carbonates
title_sort one-step synthesis of composite electrolytes of eu-doped ceria and alkali metal carbonates
publisher Elsevier
publishDate 2022
url https://repositorio.ufrn.br/handle/123456789/46476
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