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具有分离的钌纳米颗粒的SrMoO钙钛矿在固体氧化物燃料电池中用作阳极。

SrMoO Perovskite with Segregated Ru Nanoparticles Performing as Anode in Solid Oxide Fuel Cells.

作者信息

Cascos Vanessa, Chivite Lacaba Mónica, Biskup Neven, Fernández-Díaz María Teresa, Alonso José Antonio

机构信息

Departamento de Química Inorgánica, Universidad Complutense de Madrid, Madrid E-28040, Spain.

Instituto de Ciencia de Materiales de Madrid, C.S.I.C., Cantoblanco, Madrid E-28049, Spain.

出版信息

ACS Appl Mater Interfaces. 2024 Apr 10;16(14):17474-17482. doi: 10.1021/acsami.3c19099. Epub 2024 Apr 2.

DOI:10.1021/acsami.3c19099
PMID:38563237
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11009920/
Abstract

A new anode material, Ru-SrMoO, with a perovskite structure and segregated metallic Ru, has been tested in an intermediate-temperature solid oxide fuel cell (IT-SOFC) in an electrolyte-supported configuration giving substantial power densities as high as 840 mW/cm at 850 °C using pure H as fuel. This material has been prepared by the citrate method and structurally and microstructurally characterized at room temperature by different techniques such as X-ray diffraction (XRD), neutron powder diffraction (NPD), scanning electron microscopy (SEM), and scanning transmission electron microscopy (STEM). NPD was very useful to determine oxygen positions and vacancies, unveiling a cubic and oxygen-deficient perovskite SrMoO oxide with a 3 space group and potential ionic mobility. On the other hand, SEM and STEM studies have allowed to identify metallic segregated Ru nanoparticles providing the material with an excellent catalytic activity. Other properties such as the thermal expansion coefficient (TEC) and chemical compatibility with other cell components or electrical conductivity have also been studied to understand the excellent performance of this material as anode in IT-SOFC and correlate it with the crystallographic structure.

摘要

一种新型阳极材料Ru-SrMoO，具有钙钛矿结构且含有分离的金属Ru，已在中温固体氧化物燃料电池（IT-SOFC）中以电解质支撑结构进行了测试。在850℃下使用纯H₂作为燃料时，该结构可提供高达840 mW/cm²的可观功率密度。这种材料通过柠檬酸盐法制备，并在室温下采用不同技术进行了结构和微观结构表征，如X射线衍射（XRD）、中子粉末衍射（NPD）、扫描电子显微镜（SEM）和扫描透射电子显微镜（STEM）。NPD对于确定氧的位置和空位非常有用，揭示了一种具有空间群Pm-3m的立方且缺氧的钙钛矿SrMoO₃氧化物以及潜在的离子迁移率。另一方面，SEM和STEM研究能够识别出分离的金属Ru纳米颗粒，赋予该材料优异的催化活性。还研究了其他性能，如热膨胀系数（TEC）、与其他电池组件的化学兼容性或电导率，以了解这种材料作为IT-SOFC阳极的优异性能，并将其与晶体结构相关联。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/50e2/11009920/202e2d066915/am3c19099_0012.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/50e2/11009920/593a2916995d/am3c19099_0004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/50e2/11009920/8bc7ab85ed81/am3c19099_0005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/50e2/11009920/5cd857baa602/am3c19099_0006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/50e2/11009920/43ca85f586cf/am3c19099_0007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/50e2/11009920/d3831a69f341/am3c19099_0008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/50e2/11009920/44b3a0d21b9b/am3c19099_0009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/50e2/11009920/0a4be4ed6c98/am3c19099_0010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/50e2/11009920/95841667aeac/am3c19099_0011.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/50e2/11009920/202e2d066915/am3c19099_0012.jpg

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Solid oxide fuel cells.固体氧化物燃料电池
Chem Soc Rev. 2003 Jan;32(1):17-28. doi: 10.1039/b105764m.
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