Solid Oxide Fuel Cells with 3D Inkjet Printing Modified LSM-YSZ Interface

IF 1.8 4区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

ECS Journal of Solid State Science and Technology Pub Date : 2024-05-23 DOI:10.1149/2162-8777/ad4fbf

C. Jenkins, Jiashen Tian, Yan Dou, Qiong Nian, R. Milcarek

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Abstract

In this study, pillar shaped yttria-stabilized zirconia (YSZ) 3D microstructures with ~60 to 90 m diameter and 12 to 20 m height are fabricated by 3D inkjet printing to improve the topology of the electrolyte/cathode interface. The microstructures increase the surface area of the cell by ~ 2.4% to 4.0% and enhance the connection between the dense YSZ electrolyte and mixed YSZ-lanthanum strontium manganite (LSM) cathode. The morphology and microstructure of the YSZ interface are characterized with scanning electron microscopy. Polarization curves confirm that the power density improves by 47% to 107% at 0.55V, depending on the dimensions of the microstructures, in comparison to a flat interface. The non-linear improvement in power density with the size of microstructures is confirmed by calculating the uncertainty with repeated tests. Based on electrochemical impedance spectroscopy and distribution of relaxation times analysis, the performance improvement is attributed to changes in the oxygen surface exchange kinetics and O2- diffusivity in the cathode.

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采用三维喷墨打印改性 LSM-YSZ 接口的固体氧化物燃料电池

在这项研究中，通过三维喷墨打印技术制造了直径约为 60 至 90  米、高度为 12 至 20  米的柱状钇稳定氧化锆（YSZ）三维微结构，以改善电解质/阴极界面的拓扑结构。这些微结构使电池的表面积增加了约 2.4% 至 4.0%，并增强了致密 YSZ 电解质与混合 YSZ-镧锶锰矿（LSM）阴极之间的连接。扫描电子显微镜对 YSZ 界面的形态和微观结构进行了表征。极化曲线证实，与平面界面相比，在 0.55V 电压下，功率密度提高了 47% 至 107%，具体取决于微结构的尺寸。通过计算重复测试的不确定性，证实了功率密度随微结构大小的非线性改善。根据电化学阻抗光谱和弛豫时间分布分析，性能的提高归因于阴极中氧表面交换动力学和 O2- 扩散率的变化。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

ECS Journal of Solid State Science and Technology MATERIALS SCIENCE, MULTIDISCIPLINARY-PHYSICS, APPLIED

CiteScore

4.50

自引率

13.60%

发文量

455

期刊介绍： The ECS Journal of Solid State Science and Technology (JSS) was launched in 2012, and publishes outstanding research covering fundamental and applied areas of solid state science and technology, including experimental and theoretical aspects of the chemistry and physics of materials and devices. JSS has five topical interest areas: carbon nanostructures and devices dielectric science and materials electronic materials and processing electronic and photonic devices and systems luminescence and display materials, devices and processing.