Surface modification of Sr2Fe1.5Mo0.5O6-δ perovskite electrode with Ru nanoparticles via plasma-enhanced atomic layer deposition for solid oxide fuel cells

被引：1
作者：
Shin, Jeong Woo [1 ]
Park, Geonwoo [2 ]
Shin, Jiyoon [1 ]
Li, Hao-Yang [1 ]
An, Jihwan [3 ]
Su, Pei-Chen [1 ]
机构：
[1] Nanyang Technol Univ, Sch Mech & Aerosp Engn, 50 Nanyang Ave, Singapore 639798, Singapore
[2] Seoul Natl Univ Sci & Technol, Res Inst Energy & Environm, Seoul 01811, South Korea
[3] Pohang Univ Sci & Technol, Dept Mech Engn, Pohang 37673, South Korea
来源：
MATERIALS CHEMISTRY AND PHYSICS | 2025年 / 332卷
关键词：
Solid oxide fuel cells (SOFCs); Plasma-enhanced atomic layer deposition; (PEALD); Ruthenium nanoparticles; Perovskite mixed electronic and ionic; conductor (MIEC); Electrode surface modification; CATHODE; TEMPERATURE; PERFORMANCE;
D O I：
10.1016/j.matchemphys.2024.130255
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
This study demonstrates the use of plasma-enhanced atomic layer deposition (PEALD) to deposit uniformly distributed Ru nanoparticles on a Sr2Fe1.5Mo0.5O6-delta (SFMO) perovskite cathode as a surface modification strategy to improve electrode performance. The PEALD Ru nanoparticles covered the SFMO surface with superior uniformity and high density, significantly enhancing the surface reaction steps of oxygen reduction reactions (ORR). SOFCs with Ru-coated SFMO cathode showed a peak power density of 983 mW/cm2 at 700 degrees C, a 47 % increase over the SOFCs using bare SFMO cathode. In addition, the presence of high-density Ru nanoparticles also suppressed the Sr surface segregation, which is a chronic issue that deteriorates the long-term stability of Srcontaining perovskite electrodes. The cell performance was maintained for more than 20 h without significant degradation compared to cells using a bare SFMO cathode.
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页数：6
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