Modulation of two-dimensional Pt-based intermetallic nanoplates for fuel cells

Recently, ultrathin two-dimensional (2D) noble-metal-based nanomaterials have gained a lot of attention due to their interesting physicochemical properties and widespread promising applications. In particular, 2D Pt-based intermetallic nanoplates (IMNPs) have been widely studied in cathodic oxygen reduction reaction (ORR), anodic methanol, formic acid, and ethanol oxidation reactions (MOR, FAOR, and EOR) of fuel cells (FCs). In this article, we first give a fundamental understanding of the FCs. Subsequently, several modulation strategies for 2D Pt-based IMNPs including alloying, doping, facet engineering, heterogeneous structure construction, defect and interface engineering, as well as their applications in ORR, MOR, FAOR, and EOR are briefly summarized. Finally, we discuss the current challenges and give our perspectives on the synthesis of high-performance 2D Pt-based IMNPs toward FCs.