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dc.contributor.authorCai, Yixiaoen_US
dc.contributor.authorChen, Yangen_US
dc.contributor.authorAkbar, Muhammaden_US
dc.contributor.authorJin, Binen_US
dc.contributor.authorTu, Zhengwenen_US
dc.contributor.authorMushtaq, Naveeden_US
dc.contributor.authorWang, Baoyuanen_US
dc.contributor.authorQu, Xiangyangen_US
dc.contributor.authorXia, Chenen_US
dc.contributor.authorHuang, Yizhongen_US
dc.identifier.citationCai, Y., Chen, Y., Akbar, M., Jin, B., Tu, Z., Mushtaq, N., Wang, B., Qu, X., Xia, C. & Huang, Y. (2021). A bulk-heterostructure nanocomposite electrolyte of Ce0.8Sm0.2O2-δ–SrTiO3 for low-temperature solid oxide fuel cells. Nano-Micro Letters, 13(1), 46-.
dc.description.abstractSince colossal ionic conductivity was detected in the planar heterostructures consisting of fluorite and perovskite, heterostructures have drawn great research interest as potential electrolytes for solid oxide fuel cells (SOFCs). However, so far, the practical uses of such promising material have failed to materialize in SOFCs due to the short circuit risk caused by SrTiO3. In this study, a series of fluorite/perovskite heterostructures made of Sm-doped CeO2 and SrTiO3 (SDC–STO) are developed in a new bulk-heterostructure form and evaluated as electrolytes. The prepared cells exhibit a peak power density of 892 mW cm−2 along with open circuit voltage of 1.1 V at 550 °C for the optimal composition of 4SDC–6STO. Further electrical studies reveal a high ionic conductivity of 0.05–0.14 S cm−1 at 450–550 °C, which shows remarkable enhancement compared to that of simplex SDC. Via AC impedance analysis, it has been shown that the small grain-boundary and electrode polarization resistances play the major roles in resulting in the superior performance. Furthermore, a Schottky junction effect is proposed by considering the work functions and electronic affinities to interpret the avoidance of short circuit in the SDC–STO cell. Our findings thus indicate a new insight to design electrolytes for low-temperature SOFCs.en_US
dc.relation.ispartofNano-Micro Lettersen_US
dc.rights© 2021 The Author(s). Open Access. This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit
dc.titleA bulk-heterostructure nanocomposite electrolyte of Ce0.8Sm0.2O2-δ–SrTiO3 for low-temperature solid oxide fuel cellsen_US
dc.typeJournal Articleen
dc.contributor.schoolSchool of Materials Science and Engineeringen_US
dc.description.versionPublished versionen_US
dc.subject.keywordsSolid Oxide Fuel Cell Electrolyteen_US
dc.description.acknowledgementThe authors acknowledge funding from the Shanghai Pujiang Program, the National Natural Science Foundation of China (12004103), Hubei Provincial Natural Science Foundation of China (No. 2020CFB414), Fundamental Research Funds for the Central Universities (19D111317, 20D110638/003 and 274-10-0001/003), and start-up grant from Donghua University (No. 113-07-0053058).en_US
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