直接甲醇燃料电池阳极Pt基催化剂研究进展

Research Progress on Anode Pt-Based Catalysts for Direct Methanol Fuel Cells

直接甲醇燃料电池(DMFCs)由于其高效、安全便捷、无环境污染等优点,有望成为替代化石能源的高效能量转化装置。Pt由于具有优异的物理化学特性,使得其成为DMFCs最优异的阳极催化剂之一,然而由于其价格高且易被毒化等原因,在很大程度上限制了DMFCs的发展。因此,为了更好地推动DMFCs商业化发展,迫切需要开发出一种新型的阳极催化剂。基于此,如何开发出一种高活性和高稳定性的Pt基催化剂成为当前DMFCs领域研究的热点之一。本文首先阐述了DMFCs反应机理,其次详细讨论了Pt基二元合金催化剂、三元合金催化剂和高熵合金催化剂的研究进展,并总结了不同因素对甲醇氧化反应催化性能的影响,最后对甲醇燃料电池Pt基催化剂的未来发展趋势进行了展望。

As an efficient energy conversion device, direct methanol fuel cells (DMFCs) are expected to replace fossil energy because of their high efficiency, safety and convenience, non-environmental pollution, etc. Platinum (Pt) is one of the most excellent anode catalysts for DMFCs due to its excel-lent physical and chemical properties. However, the development of DMFCs has been limited due to their high price and easily suffered from CO poisoning. Therefore, in order to promote the commer-cial development of DMFCs, it is urgent to develop a new type of anode catalyst. Based on this guid-ance, how to develop a Pt-based catalyst with high activity and stability has become one of the hot topics in DMFCs. This work first focuses on the reaction mechanism of methanol oxidation reaction (MOR). Next, the research progress of Pt-based-binary alloy catalysts, ternary alloy catalysts and high entropy alloy catalysts will be discussed in detail. Finally, we will summarize the influence of different factors on MOR performance, and the future development of Pt-based catalysts trend will be prospected.