Electrochemical properties of LaCePr-oxide/K2WO4 composite electrolyte for low-temperature SOFCs

Chen Xia; Baoyuan Wang; Yixiao Cai; Wei Zhang; Muhammad Afzal; Bin Zhu

doi:10.1016/j.elecom.2016.12.013

Electrochemical properties of LaCePr-oxide/K₂WO₄ composite electrolyte for low-temperature SOFCs

Chen Xia
, Baoyuan Wang
, Yixiao Cai
, Wei Zhang
, Muhammad Afzal
, Bin Zhu

KTH Royal Institute of Technology
Hubei University
National University of Singapore

科研成果: 期刊稿件 › 文章 › 同行评审

35 引用（Scopus）

摘要

In this study, we introduced tungstate into solid oxide fuel cells (SOFCs) for the first time by using a La/Pr-doped CeO₂ (LCP)/K₂WO₄ composite as the electrolyte, which exhibited remarkably enhanced grain boundary conduction compared to that of single-phase LCP. The composition dependence of the electrical conductivity was investigated. As a result, the composite with 10 wt% K₂WO₄ was proven to be the optimum ratio, revealing a significantly higher ionic conductivity than LCP, along with a negligible electronic conductivity. The fuel cell using the LCP/K₂WO₄ electrolyte displayed an encouraging performance of 500 mW cm^− 2 at 550 °C. These findings indicate that the LCP/K₂WO₄ composite is a promising electrolyte for low-temperature SOFCs.

源语言	英语
页（从-至）	44-48
页数	5
期刊	Electrochemistry Communications
卷	77
DOI	https://doi.org/10.1016/j.elecom.2016.12.013
出版状态	已出版 - 1 4月 2017
已对外发布	是

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10.1016/j.elecom.2016.12.013

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@article{3037ee6cc6974e9893321794f0b4b4a0,

title = "Electrochemical properties of LaCePr-oxide/K2WO4 composite electrolyte for low-temperature SOFCs",

abstract = "In this study, we introduced tungstate into solid oxide fuel cells (SOFCs) for the first time by using a La/Pr-doped CeO2 (LCP)/K2WO4 composite as the electrolyte, which exhibited remarkably enhanced grain boundary conduction compared to that of single-phase LCP. The composition dependence of the electrical conductivity was investigated. As a result, the composite with 10 wt\% K2WO4 was proven to be the optimum ratio, revealing a significantly higher ionic conductivity than LCP, along with a negligible electronic conductivity. The fuel cell using the LCP/K2WO4 electrolyte displayed an encouraging performance of 500 mW cm− 2 at 550 °C. These findings indicate that the LCP/K2WO4 composite is a promising electrolyte for low-temperature SOFCs.",

keywords = "Composite electrolyte, Electrical property, KWO, LaCePr-oxide, Solid oxide fuel cells",

author = "Chen Xia and Baoyuan Wang and Yixiao Cai and Wei Zhang and Muhammad Afzal and Bin Zhu",

note = "Publisher Copyright: {\textcopyright} 2017 Elsevier B.V.",

year = "2017",

month = apr,

day = "1",

doi = "10.1016/j.elecom.2016.12.013",

language = "英语",

volume = "77",

pages = "44--48",

journal = "Electrochemistry Communications",

issn = "1388-2481",

publisher = "Elsevier Inc.",

}

TY - JOUR

T1 - Electrochemical properties of LaCePr-oxide/K2WO4 composite electrolyte for low-temperature SOFCs

AU - Xia, Chen

AU - Wang, Baoyuan

AU - Cai, Yixiao

AU - Zhang, Wei

AU - Afzal, Muhammad

AU - Zhu, Bin

PY - 2017/4/1

Y1 - 2017/4/1

N2 - In this study, we introduced tungstate into solid oxide fuel cells (SOFCs) for the first time by using a La/Pr-doped CeO2 (LCP)/K2WO4 composite as the electrolyte, which exhibited remarkably enhanced grain boundary conduction compared to that of single-phase LCP. The composition dependence of the electrical conductivity was investigated. As a result, the composite with 10 wt% K2WO4 was proven to be the optimum ratio, revealing a significantly higher ionic conductivity than LCP, along with a negligible electronic conductivity. The fuel cell using the LCP/K2WO4 electrolyte displayed an encouraging performance of 500 mW cm− 2 at 550 °C. These findings indicate that the LCP/K2WO4 composite is a promising electrolyte for low-temperature SOFCs.

AB - In this study, we introduced tungstate into solid oxide fuel cells (SOFCs) for the first time by using a La/Pr-doped CeO2 (LCP)/K2WO4 composite as the electrolyte, which exhibited remarkably enhanced grain boundary conduction compared to that of single-phase LCP. The composition dependence of the electrical conductivity was investigated. As a result, the composite with 10 wt% K2WO4 was proven to be the optimum ratio, revealing a significantly higher ionic conductivity than LCP, along with a negligible electronic conductivity. The fuel cell using the LCP/K2WO4 electrolyte displayed an encouraging performance of 500 mW cm− 2 at 550 °C. These findings indicate that the LCP/K2WO4 composite is a promising electrolyte for low-temperature SOFCs.

KW - Composite electrolyte

KW - Electrical property

KW - KWO

KW - LaCePr-oxide

KW - Solid oxide fuel cells

UR - https://www.scopus.com/pages/publications/85013435367

U2 - 10.1016/j.elecom.2016.12.013

DO - 10.1016/j.elecom.2016.12.013

M3 - 文章

AN - SCOPUS:85013435367

SN - 1388-2481

VL - 77

SP - 44

EP - 48

JO - Electrochemistry Communications

JF - Electrochemistry Communications

ER -

Electrochemical properties of LaCePr-oxide/K2WO4 composite electrolyte for low-temperature SOFCs

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Electrochemical properties of LaCePr-oxide/K₂WO₄ composite electrolyte for low-temperature SOFCs