具有抗碳沉积能力的高性能阳极负载sofc的低成本制造

Shang Peng , Zhao Liu , Pairuzha Xiaokaiti , Tiancheng Fang , Jiwei Wang , Guoqing Guan , Abuliti Abudula
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摘要

开发高性价比的固体氧化物燃料电池是实现其大规模应用的关键。在本研究中,采用浆液喷涂和旋涂技术相结合的方法制备了阳极负载的SOFC单电池,在保持低生产成本的同时,获得了致密的钇稳定氧化锆(YSZ)电解质层。以氢气和干甲烷为燃料,对制备的SOFC的电化学性能进行了评价。显微结构分析证实,YSZ电解质具有致密性,厚度约为10 μm,具有良好的气密性和防止燃料交叉。NiO- ysz阳极表现出良好的孔隙率,烧结良好的NiO颗粒形成坚固的框架,有利于电化学反应。性能评估表明,在氢气操作下,SOFC在1000°C下实现了1.408 W/cm²的峰值功率密度,开路电压(ocv)与理论预测非常吻合。当与干甲烷一起工作时,SOFC保持稳定的性能,在1000°C时达到0.96 W/cm²的峰值功率密度,突出了其直接利用碳氢化合物的潜力。阳极排气的气体成分分析证实没有过量的碳沉积,表明阳极微观结构在减轻甲烷氧化过程中的结焦方面是有效的。这些发现表明,喷雾涂层和旋转涂层SOFC设计为提高燃料电池效率和成本效益提供了一种有前途的方法。未来的研究应集中在优化电解质制造方法和提高碳氢燃料操作中阳极的稳定性,以进一步推进SOFC技术的商业化。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Low-cost fabrication of high-performance anode-supported SOFCs with anti-carbon deposition capability

Low-cost fabrication of high-performance anode-supported SOFCs with anti-carbon deposition capability
The development of cost-effective solid oxide fuel cells (SOFCs) is crucial for the large-scale application. In this study, anode-supported SOFC single cells were fabricated using a combination of slurry spraying and spin-coating technique to achieve a dense Yttria Stabilized Zirconia (YSZ) electrolyte layer while maintaining low production cost. The electrochemical performance of the fabricated SOFC was evaluated using hydrogen and dry methane as fuels. Microstructural analysis confirmed that the YSZ electrolyte exhibited high densification with a thickness of approximately 10 μm, ensuring excellent gas-tightness and preventing fuel crossover. The NiO-YSZ anode demonstrated favorable porosity, with well-sintered NiO particles forming a robust framework to facilitate electrochemical reactions. Performance evaluations revealed that under hydrogen operation, the SOFC achieved a peak power density of 1.408 W/cm² at 1000 °C, with open-circuit voltages (OCVs) closely matching theoretical predictions. When operated with dry methane, the SOFC maintained stable performance, reaching a peak power density of 0.96 W/cm² at 1000 °C, highlighting its potential for direct hydrocarbon utilization. Gas composition analysis of the anode exhaust confirmed the absence of excessive carbon deposition, indicating the effectiveness of the anode microstructure in mitigating coking during methane oxidation. These findings demonstrate that the spray-coated and spin-coated SOFC design offers a promising approach to improving fuel cell efficiency and cost-effectiveness. Future research should focus on optimizing electrolyte fabrication methods and enhancing anode stability in hydrocarbon-fueled operation to further advance the commercialization of SOFC technology.
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