Fuel Cell System and Engineering Laboratory, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, Liaoning 116023, China.
Nanoscale. 2017 May 25;9(20):6910-6919. doi: 10.1039/c7nr01491k.
Proton exchange membrane fuel cells are promising candidates for the next-generation power sources; however, poor durability and high cost impede their widespread application. To address this dilemma, a nanostructured membrane electrode assembly (MEA) based on Pt/NbO nanobelts (NBs) was constructed through hydrothermal synthesis and the physical vapour deposition method. Pt/NbO NBs were directly aligned with Nafion membrane without ionomer as a binder. The prepared catalyst layer is ultrathin and has ultralow Pt loading. A single cell performance of 5.80 kW g (cathode) and 12.03 kW g (anode) was achieved by the Pt/NbO NBs-based MEA (66.0 μg cm). The accelerated durability test indicates that the Pt/NbO NBs-based MEA is far more stable than conventional Pt/C-based MEA.
质子交换膜燃料电池有望成为下一代能源的候选者；然而，较差的耐久性和高成本阻碍了它们的广泛应用。为了解决这一困境，通过水热合成和物理气相沉积法构建了基于 Pt/NbO 纳米带 (NBs) 的纳米结构膜电极组件 (MEA)。Pt/NbO NBs 直接与 Nafion 膜对齐，没有离聚物作为粘结剂。所制备的催化剂层非常薄，Pt 负载量超低。基于 Pt/NbO NBs 的 MEA（66.0μg cm）实现了 5.80 kW g（阴极）和 12.03 kW g（阳极）的单电池性能。加速耐久性测试表明，基于 Pt/NbO NBs 的 MEA 比传统的 Pt/C 基 MEA 稳定得多。
