Operating proton exchange membrane fuel cell (PEMFC) under low humidity is important for applications of small electrical devices such as drone. Hydrophilic catalyst is prepared by depositing Pt nanoparticles on oxygen-functionalized carbon supports while commercial Pt/C is used as hydrophobic catalyst. Dual catalyst layer (dual-CL) electrodes are prepared with an inner hydrophilic layer and an outer hydrophobic layer for a membrane electrode assembly (MEA), and it is applied for PEMFC under low humidity. The dual-CL MEA shows enhanced cell performance and durability than MEAs with a single hydrophobic or hydrophilic catalyst layer. Hydrophilicity in anode is the most important to enhance performance.

在低湿度下运行质子交换膜燃料电池（PEMFC）对于小型电气设备（如无人机）的应用非常重要。亲水性催化剂是通过将Pt纳米颗粒沉积在氧官能化的碳载体上制备的，而商用Pt / C则用作疏水性催化剂。制备具有用于膜电极组件（MEA）的内部亲水层和外部疏水层的双催化剂层（dual-CL）电极，并将其应用于低湿度的PEMFC。与具有单个疏水或亲水催化剂层的MEA相比，双CL MEA显示出更高的电池性能和耐久性。阳极的亲水性对于提高性能最为重要。