[口头报告]Achieving Strong Coherency for a Composite Electrode via One-Pot Method with Enhanced Electrochemical Performance in Reversible Solid Oxide Cells
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[口头报告]Achieving Strong Coherency for a Composite Electrode via One-Pot Method with Enhanced Electrochemical Performance in Reversible Solid Oxide Cells

Achieving Strong Coherency for a Composite Electrode via One-Pot Method with Enhanced Electrochemical Performance in Reversible Solid Oxide Cells
编号:259 稿件编号:131 访问权限:仅限参会人 更新:2024-05-15 17:48:54 浏览:295次 口头报告

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摘要
The oxygen electrode with a fast oxygen reduction reaction (ORR), oxygen evolution reaction (OER), and sufficient durability plays a pivotal role in reversible solid oxide cells (RSOCs). Here, we demonstrate a NdBa0.5Ca0.5Co1.5Fe0.5O5+δ@Gd0.1Ce0.9O2−δ (NBCCF@GDC) composite oxygen electrode via a one-pot method for exhibiting strong coherency, which result in boosting the electrochemical performance of RSOCs. The NBCCF@GDC electrode yields a very low polarization resistance (0.106 Ω cm2 at 800 °C), high electrolysis current density (1.45 A cm–2 with 70 vol % absolute humidity at 1.3 V), and high power density (∼1.3 W cm–2 at 800 °C) and shows excellent reversibility and stability. Notably, strong coherency in these NBCCF@GDC composite materials was successfully revealed by HT-XRD, XPS, STEM, and EELS. The phase contiguity and interfacial coherence between NBCCF and GDC increase the Co oxidation state and the number of active sites, which enhanced the electrocatalytic activity for perovskites. Overall, this work demonstrates a highly desirable strategy for the production of functionalized electrodes for next-generation reversible solid oxide cells.
 
关键字
one-pot method, oxygen electrode, NBCCF@GDC composite, reversible solid oxide cells, strong coherency.
报告人
云峰 田
副教授 中国矿业大学

稿件作者
云峰 田 中国矿业大学
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