Enhanced durability of a proton conducting oxide fuel cell with a purified yttrium-doped barium zirconate-cerate electrolyte

Hakim, M. J.; Yoo, Chung‐Yul; Joo, Jong Hoon; Yu, Ji Haeng

doi:10.1016/j.jpowsour.2014.12.046

Cited by 24 publications

(10 citation statements)

References 30 publications

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“…Note that the cell durability depends on not only the cathodeelectrolyte compositional combinations, but also anode, working gas, temperature and the applied voltage. [45][46][47] More detailed evaluation with longer tests is required. As shown in Fig.…”

Section: O ½Vmentioning

confidence: 99%

High-performance protonic ceramic fuel cell cathode using protophilic mixed ion and electron conducting material

Kim

Niu

et al. 2022

J. Mater. Chem. A

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Section: O ½Vmentioning

confidence: 99%

High-performance protonic ceramic fuel cell cathode using protophilic mixed ion and electron conducting material

Kim

Niu

et al. 2022

J. Mater. Chem. A

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“…Although partial substitution of Ce by Zr in BaCeO 3 -based oxides can improve the H 2 Otolerance of material, it has been reported that this approach can't completely stabilize the BaCeO 3 -based oxides in an atmosphere containing high humidity [30] . Hakim et al [30] have observed Ba(OH) 2 ·8H 2 O on the BCZY53 electrolyte after 110 h operation and the formation of Ba(OH) 2 ·8H 2 O is due to the reaction between BCZY53 and H 2 O. Yang et al [31] have also reported that BaCO 3 and CeO 2 can be found in BaCe 0. other dopants such as Yb have been explored. Yang et al [32] reported for the first time that Yb doping can greatly improve the stability of BaCe [33] .…”

Section: Bace 1-x Zr X O 3 -Based Materialsmentioning

confidence: 99%

Progress Report on Proton Conducting Solid Oxide Electrolysis Cells

Lei

Zhang

Yuan

et al. 2019

Adv Funct Materials

161

114

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The proton-conducting solid oxide electrolysis cell (H-SOEC) is a promising device that converts electrical energy to chemical energy. H-SOECs have been actively studied in the past few years, due to their advantages over oxygen-ion-conducting solid oxide electrolysis cells (O-SOECs), such as lower operation temperature, relatively lower activation energy, and easier gas separation. A critical overview of recent progress in H-SOECs is presented, focusing particularly on the period from 2014-2018. This review focuses on three aspects of H-SOECs, namely the materials, modeling and current leakage in proton conducting oxide electrolytes. Specifically, the current leakage in proton conducting oxides, which is often neglected, leads to two problems in the studies of H-SOECs. One is the distortion of the electrochemical impedance spectra (EIS) and the other is low faradaic efficiency of electrolysis. Based on the comprehensive and critical discussion in these three sections, challenges in the development of H-SOECs are highlighted and prospective research in H-SOECs is outlined.Received: ((will be filled in by the editorial staff))Revised: ((will be filled in by the editorial staff))

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“…A tecnologia das células a combustíveis é de grande importância para a geração de energia sustentável, sendo esta uma fonte de energia limpa para geração de energia elétrica (HA et al, 2013). Nesta célula a energia química é convertida em energia térmica e elétrica, através da combustão eletroquímica de um combustível, geralmente o hidrogênio (GIANLUCA et al, 2018;HAKIM et al, 2015;WACHSMAN et al, 2011).…”

Section: Introductionunclassified

“…A síntese de materiais com condução protônica contribui para a produção de eletrólitos sólidos condutores protônicos, bastante utilizados no funcionamento das células a combustíveis (BORGES et al, 2017;HAKIM et al, 2015).…”

Section: Introductionunclassified

“…Com a dopagem do zirconato de bário com óxido de ítrio (BZYO) o cátion de Y 3+ substitui parcialmente os sítios do Zr 4+ , levando a produção de vacâncias de oxigênio na rede cristalina. A cada dois íons ítrio que entram na rede cristalina há a formação de uma vacância de oxigênio e, observa-se que a concentração de defeitos protônicos será proporcional à concentração de vacâncias de oxigênio e, portanto proporcional a concentração de dopante (HAKIM et al, 2015;YAMAZAKI et Al., 2013).…”

Section: Introductionunclassified

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Sinterização de cerâmicas de BaZr1− xYxO3 − δ para uso em células a combustíveis de óxido sólido

Borges¹,

Gonçalves²,

Rodrigues³

et al. 2019

RBES

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ResumoOs materiais cerâmicos a base de zirconato de bário dopado com 8, 15 e 20 % em mol de ítrio (BaZr 1− x Y x O 3 − δ ) foram sintetizados pelo método dos precursores poliméricos com calcinação em 700, 800 e 900ºC por 2 horas. As nanopartículas foram analisadas por difração de raios X obtendo-se a estrutura cúbica do tipo perovskita. Pela equação de Scherrer calculou-se o tamanho médio dos cristalitos, sendo de 20,89; 18,30 e 15,17 nm para a dopagem com 8, 15 e 20 % em mol de ítrio, respectivamente. A sinterabilidade para o zirconato de bário dopado com 15% em mol de ítrio foi verificada por análise dilatométrica, Microscopia Eletrônica de Varredura por Efeito de Campo (MEV/FEG) e pelo método de Arquimedes. As amostras sinterizadas a 1600 °C por 4 horas apresentaram 56,8; 58,9 e 73,8% de densificação para 8, 15 e 20 % em mol de ítrio, respectivamente. A partir disso, verifica-se um aumento na sinterização com a inserção de maior concentração de dopante, sendo de grande importância para a aplicação em eletrólitos sólidos condutores protônicos utilizados em células a combustível. Palavras-chave: eletrólito sólido condutor protônico, precursores poliméricos, energia limpa AbstractCeramic materials based on barium zirconate doped-yttrium with 8; 15 and 20 mol% (BaZr 1− x Y x O 3 − δ ), were synthesized by the polymeric precursor method with calcination at 900 °C for 2 hours. The nanoparticles were analyzed by X-ray diffraction obtaining the cubic structure of the perovskite type. By the Scherrer equation the average crystallite size was calculated, being 20.89; 18.30 and 15.17 nm for doping with 8, 15 and 20 mol% of yttrium, respectively. The sinterability of the materials was verified by dilatometric analysis, scanning electron microscopy (SEM/FEG) and by the Archimedes method. Samples sintered at 1600 °C for 4 hours showed 56.8; 58.9 and 73.8% densification to 8, 15 and 20 mol% yttrium, respectively. From this, there is an increase in sintering with the insertion of higher dopant concentration, being of great importance for the application in proton conducting solid oxide fuel cells.

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Enhanced durability of a proton conducting oxide fuel cell with a purified yttrium-doped barium zirconate-cerate electrolyte

Cited by 24 publications

References 30 publications

High-performance protonic ceramic fuel cell cathode using protophilic mixed ion and electron conducting material

High-performance protonic ceramic fuel cell cathode using protophilic mixed ion and electron conducting material

Progress Report on Proton Conducting Solid Oxide Electrolysis Cells

Sinterização de cerâmicas de BaZr1− xYxO3 − δ para uso em células a combustíveis de óxido sólido

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