期刊
ENERGIES
卷 16, 期 17, 页码 -出版社
MDPI
DOI: 10.3390/en16176404
关键词
SOFC; hydrocarbons; direct utilisation; fuel flexibility
The main advantage of solid oxide fuel cells (SOFCs) in fuel flexibility is an interesting subject for further exploration. Recent studies have shown promising results in the direct utilization of hydrocarbons as fuel for SOFCs, with various approaches described for using methane and heavier hydrocarbons. The use of hydrocarbons can occur through direct internal reforming or gradual internal reforming, with precautionary measures to mitigate carbon formation. The focus of further research is on refining strategies, enhancing efficiency, and ensuring long-term stability and performance of hydrocarbon-fueled SOFC systems.
Solid oxide fuel cells (SOFCs)' main advantage in fuel flexibility appears to be an interesting subject for further exploration. From the literature survey, direct utilisation of hydrocarbon as fuel for SOFCs has garnered attention with promising results reported. Various approaches, showcasing potential for using methane (CH4) and heavier hydrocarbons in SOFCs, have been described. The direct use of hydrocarbons can occur through either direct internal reforming or gradual internal reforming, with requisite precautionary measures to mitigate carbon formation. While the internal reforming process could proceed via steam reforming, dry reforming or partial oxidation, an exciting development in the direct use of pure hydrocarbons, seems to progress well. Further exploration aims to refine strategies, enhance efficiency and ensure the long-term stability and performance of hydrocarbon-fuelled SOFC systems. This review delves into the progress in this field, primarily over the past two decades, offering comprehensive insights. Regardless of fuel type, studies have largely concentrated on catalyst compositions, modifications and reaction conditions to achieve better conversion and selectivity. Finding suitable anode materials exhibiting excellent performance and robustness under demanding operating conditions, remains a hurdle. Alternatively, ongoing efforts are directed towards lowering working temperatures, enabling consideration of a wider range of materials with improved electrochemical performance.
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