Grigoriev Sergey A, Fateev Vladimir N, Pushkarev Artem S, Pushkareva Irina V, Ivanova Natalia A, Kalinichenko Valery N, Yu Presnyakov Mikhail, Wei Xing
National Research University "Moscow Power Engineering Institute", 14, Krasnokazarmennaya st., Moscow 111250, Russia.
National Research Centre "Kurchatov Institute", 1, Akademika Kurchatova sq., Moscow 123182, Russia.
Materials (Basel). 2018 Aug 10;11(8):1405. doi: 10.3390/ma11081405.
Reduced graphene oxide (RGO) and RGO modified by ozone (RGO-O) and fluorine (RGO-F) were synthesized. Pt nanoparticles were deposited on these materials and also on Vulcan XC-72 using the polyol method. The structural and electrochemical properties of the obtained catalysts were investigated in a model glass three-electrode electrochemical cell and in a laboratory PEM fuel cell. Among the RGO-based catalysts, the highest electrochemically active surface area (EASA) was obtained for the oxidized RGO supported catalyst. The EASA of the fluorine-modified RGO-supported catalyst was half as big. In the PEM fuel cell the performance of RGO-based catalysts did not exceed the activity of Vulcan XC-72-based catalysts. However, the addition of an RGO-O-based catalyst to Vulcan XC-72-based catalyst (in contrast to the RGO-F-based catalyst) allowed us to increase the catalyst layer activity and PEM fuel cell performance. Possible reasons for such an effect are discussed.
合成了还原氧化石墨烯（RGO）以及经臭氧（RGO-O）和氟（RGO-F）改性的RGO。采用多元醇法将铂纳米颗粒沉积在这些材料以及Vulcan XC-72上。在一个典型的玻璃三电极电化学池中以及在一个实验室质子交换膜燃料电池中研究了所得催化剂的结构和电化学性能。在基于RGO的催化剂中，氧化RGO负载的催化剂具有最高的电化学活性表面积（EASA）。氟改性RGO负载的催化剂的EASA只有其一半大小。在质子交换膜燃料电池中，基于RGO的催化剂的性能未超过基于Vulcan XC-72的催化剂的活性。然而，向基于Vulcan XC-72的催化剂中添加基于RGO-O的催化剂（与基于RGO-F的催化剂相比）使我们能够提高催化剂层活性和质子交换膜燃料电池性能。讨论了产生这种效应的可能原因。
