材料科学
静电纺丝
纳米纤维
阴极
电解质
氧化物
电化学
化学工程
电极
极化(电化学)
阳极
纳米技术
固体氧化物燃料电池
复合材料
聚合物
化学
冶金
物理化学
工程类
作者
Mingxu Sun,B.L. Wang,Bing Yang,Li Peng,Ken‐Ming Yin,Lushan Ma,Bo Li,Jing Chen,Xuzhuo Sun
标识
DOI:10.1016/j.ijhydene.2024.03.354
摘要
In this study, Sm0.5Sr0.5CoO3-δ (SSC) nanofiber materials were prepared by electrospinning for solid oxide fuel cells (SOFCs). We presented an efficient strategy for fabricating fiber electrodes with a good three-dimensional network structure using PVP as a softening agent. The SSC nanofibers prepared by electrospinning method have good contact with the electrolyte and excellent electrochemical performance as SOFCs cathode material. Compared to the SSC nanoparticles cathode, the cathodic polarization resistance of SSC nanofiber cathode decreased by 32.3%, 27.9%, 27.7%, and 12.1% at 500 °C, 550 °C, 600 °C, and 650 °C, respectively. It is proposed that the high-voltage electric field can inhibit the Sr bias on the surface of the material, which favoring the migration of oxygen ions and electrons. Furthermore, in a single cell with SSC nanofiber electrodes, we achieved a maximum power density of 0.494 W/cm2 and 0.766 W/cm2 at 600 °C and 650 °C, respectively, which demonstrating good electrochemical output performance.
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