High-Entropy Spinel Oxide Nanostructures as Stable Cathodes for Solid Oxide Fuel Cells

IF 9.6 1区材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Nano Letters Pub Date : 2025-04-09 DOI:10.1021/acs.nanolett.4c06461

Zhaohui Chen, Ben Ma, Chen Dang, Jiahao Song, Yingke Zhou

{"title":"High-Entropy Spinel Oxide Nanostructures as Stable Cathodes for Solid Oxide Fuel Cells","authors":"Zhaohui Chen, Ben Ma, Chen Dang, Jiahao Song, Yingke Zhou","doi":"10.1021/acs.nanolett.4c06461","DOIUrl":null,"url":null,"abstract":"Solid oxide fuel cells (SOFCs) represent a promising clean energy technology for efficient chemical-to-electrical energy conversion with minimal environmental impact. However, the development of cathode materials that can maintain both high performance and long-term stability remains challenging, particularly due to the degradation of nanostructured cathodes caused by particle coarsening. This study employs an impregnation method to fabricate high-entropy spinel oxide (Mg0.2Fe0.2Co0.2Ni0.2Cu0.2)Fe2O4 (MFCNCF) nanoparticles with varying loadings on a porous Ce0.9Gd0.1O1.95 (GDC) skeleton. The optimized cathode with 30 wt % MFCNCF loading achieves a remarkably low polarization resistance of 0.12 Ω·cm2 and maximum power density of 1063.94 mW·cm–2 at 800 °C. Most significantly, the entropy stabilization effect enables the high-entropy spinel oxide nanoparticles to maintain their microstructure throughout 240 h of operation with negligible performance degradation. The study introduces a novel strategy combining high-entropy design with nanostructure engineering to develop stable and high-performance cathode materials for SOFCs.","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"21 1","pages":""},"PeriodicalIF":9.6000,"publicationDate":"2025-04-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Nano Letters","FirstCategoryId":"88","ListUrlMain":"https://doi.org/10.1021/acs.nanolett.4c06461","RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}

引用次数: 0

Abstract

Solid oxide fuel cells (SOFCs) represent a promising clean energy technology for efficient chemical-to-electrical energy conversion with minimal environmental impact. However, the development of cathode materials that can maintain both high performance and long-term stability remains challenging, particularly due to the degradation of nanostructured cathodes caused by particle coarsening. This study employs an impregnation method to fabricate high-entropy spinel oxide (Mg_0.2Fe_0.2Co_0.2Ni_0.2Cu_0.2)Fe₂O₄ (MFCNCF) nanoparticles with varying loadings on a porous Ce_0.9Gd_0.1O_1.95 (GDC) skeleton. The optimized cathode with 30 wt % MFCNCF loading achieves a remarkably low polarization resistance of 0.12 Ω·cm² and maximum power density of 1063.94 mW·cm^–2 at 800 °C. Most significantly, the entropy stabilization effect enables the high-entropy spinel oxide nanoparticles to maintain their microstructure throughout 240 h of operation with negligible performance degradation. The study introduces a novel strategy combining high-entropy design with nanostructure engineering to develop stable and high-performance cathode materials for SOFCs.

Abstract Image

查看原文本刊更多论文

求助全文

约1分钟内获得全文求助全文

来源期刊

Nano Letters 工程技术-材料科学：综合

CiteScore

16.80

自引率

2.80%

发文量

1182

审稿时长

1.4 months

期刊介绍： Nano Letters serves as a dynamic platform for promptly disseminating original results in fundamental, applied, and emerging research across all facets of nanoscience and nanotechnology. A pivotal criterion for inclusion within Nano Letters is the convergence of at least two different areas or disciplines, ensuring a rich interdisciplinary scope. The journal is dedicated to fostering exploration in diverse areas, including: - Experimental and theoretical findings on physical, chemical, and biological phenomena at the nanoscale - Synthesis, characterization, and processing of organic, inorganic, polymer, and hybrid nanomaterials through physical, chemical, and biological methodologies - Modeling and simulation of synthetic, assembly, and interaction processes - Realization of integrated nanostructures and nano-engineered devices exhibiting advanced performance - Applications of nanoscale materials in living and environmental systems Nano Letters is committed to advancing and showcasing groundbreaking research that intersects various domains, fostering innovation and collaboration in the ever-evolving field of nanoscience and nanotechnology.