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固体氧化物燃料电池的纳米阳极
Nano-Structured Anodes of Solid Oxide Fuel Cells
固体氧化物燃料电池技术的商业化进程需要发展在中低温操作时具有优良输出性能以及良好抗积炭与抗硫中毒能力的新型阳极材料,这主要通过对传统的镍基阳极进行修饰以及探索新型的金属或陶瓷材料来实现。研究发现,离子浸渍法是一种能够有效地对传统镍基阳极进行改性以及向多孔骨架中浸入新型阳极物种的手段。由于热处理的温度不高,所以浸渍粒子的尺寸通常控制在纳米量级,从而表现出卓越的电化学性能。本文结合本实验室的诸多研究成果以及文献中的一些经典报道,对这种纳米阳极的优越性和应用价值进行详细论述。
The commercialization of solid oxide fuel cell (SOFC) technologies requires the development of novel anode materials with high performance and good carbon and sulfur tolerance at intermediate-temperatures, either by modifying the state-of-the-art Ni based anodes, or through exploring alternative metal cermet or ceramic based materials. Wet impregnation is an effective approach for the optimization of traditional Ni-based anode and the incorporation of novel anode species into porous backbones. Due to the lower treatment temperature, the impregnated particles are usually nano-sized, thus exhibiting superior electrochemical performance. In this paper, the superiority and application of these nano-structured anodes are discussed in details, based on the obtained results in our laboratory, as well as some reports in the literatures.
Contents
1 Introduction
2 Theoretical TPB lengths of conventional anode and nano-structured anode
3 Effects of impregnation method and anode microstructure on the cell performance
3.1 Performance of nano-structured SOFC anodes
3.2 Effects of impregnation parameters on nano-structured SOFC anode performance
3.3 Effects of impregnation species on anode performance
4 Application of nano-structured impregnated anodes in hydrocarbon fuels SOFC
4.1 Nano-structured Ni-based impregnated anodes
4.2 Nano-structured Cu-based impregnated anodes
4.3 Nano-structured perovskite-based impregnated anodes
5 Sulfur tolerance of nano-structured impregnated anodes
6 Summary and outlook
离子浸渍法
ion impregnation
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