College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, P.R. China.
Nanoscale. 2018 Sep 13;10(35):16468-16473. doi: 10.1039/c8nr04918a.
Fuel cells have been gaining much interest due to their advantages of high energy conversion efficiency, easy handling, etc., whereas some drawbacks of anode catalysts regarding limited performances have seriously restricted their practical applications. Therefore, the development of anode nanocatalysts with higher activity and stability has become an urgent need. In view of this, we have developed a facile wet-chemical approach to synthesize 1D alloy ultrafine Pt-Fe NWs, and we have also revealed the formation mechanism of the ultrafine Pt-Fe NWs using time-dependent studies. More importantly, 1D ultrafine nanowires with anisotropy, superior flexibility, high surface area and excellent conductivity are promising candidates for the improvement of nanocatalytic activity and stability enhancement. Therefore, the electrocatalytic activities of ultrafine Pt3Fe NWs in the oxidation of ethylene glycol and glycerol are 3.9 and 2.5 times greater than that of commercial Pt/C, respectively. Moreover, they provide excellent long-term stability. Our efforts may potentially promote the commercialization of fuel cells to some extent.
燃料电池因其高能量转换效率、易于处理等优点而备受关注，然而，阳极催化剂在性能方面的一些局限性严重限制了它们的实际应用。因此，开发具有更高活性和稳定性的阳极纳米催化剂已成为当务之急。有鉴于此，我们开发了一种简便的湿化学方法来合成一维合金超细 Pt-Fe NWs，并且我们还通过时变研究揭示了超细 Pt-Fe NWs 的形成机制。更重要的是，一维超细纳米线具有各向异性、优异的柔韧性、高表面积和优异的导电性，是提高纳米催化活性和稳定性的理想选择。因此，超细 Pt3Fe NWs 在乙二醇和甘油氧化中的电催化活性分别比商业 Pt/C 高 3.9 倍和 2.5 倍。此外，它们还提供了优异的长期稳定性。我们的努力可能在一定程度上促进燃料电池的商业化。
