燃料电池作为一种清洁能源有很大的发展前景,其阴极氧还原反应多采用铂基催化剂,但由于贵金属铂的储量稀少、价格昂贵等原因,严重阻碍了燃料电池的商业化进程。寻找高活性、高稳定性的新材料来替代阴极铂基催化剂成为燃料电池大规模商业化亟待解决的关键问题之一。研究表明,以生物质为原料的碳材料有望成为商业铂基氧还原催化剂的一种理想替代品。本文综述了这方面的研究进展,并且展望了未来的发展趋势。
Fuel cells as a kind of clear energy source have great prospects, and Pt-based catalysts are often used to boost the cathode oxygen reduction reaction (ORR). However the limited Pt reserves and high cost seriously obstruct the commercialization of fuel cells. To find new cheap materials with high ORR activity and stability to replace traditional Pt-based catalyst becomes one of the key issues of large-scale commercialization of fuel cells. Carbon-based materials derived from biomass are considered to be one of the ideal alternatives, which have been intensively investigated recently. The research progress in biomass-based carbon materials as ORR electrocatalysts was reviewed and the future development was prospected.