We report a simple, scalable approach to improve interfacial characteristics of carbon semi-coated titania nanorods-supported-Pt with superior peak power density as compared to Pt/C with thin metal loading of 150 μg cm⁻². Thin layer of carbon coated titania nanorod is synthesized by hydrothermal method. Carbon coated titania nanorods boosts the Pt oxygen reduction reaction activity than carbon. The crystal structure, dispersion of platinum nanoparticles, surface morphology and oxidation state are studied by X-ray diffraction, transmission electron microscopy and X-ray photoelectron spectroscopy, respectively. Studies using conventional three electrode setup shows that Pt/CCT-30 retains 48% of initial electrochemical surface area even after 40,000 potential cycles between 0.6 and 1.2 V. The solid fuel cell mode accelerated stress durability studies show that thin layer of carbon coated titania nanorods-Pt (Pt/CCT 30) significantly enhances stability and preserves 75% of initial fuel cell performance even after 10,000 potential cycles between 1 and 1.5 V. In comparison, only 20% of performance is retained for Pt supported on carbon after 3000 cycles.

我们报告了一种简单，可扩展的方法，与具有150μgcm ^-2的薄金属负载的Pt / C相比，具有更高的峰值功率密度，可改善碳半涂层二氧化钛纳米棒支撑的Pt的界面特性。通过水热法合成了碳包覆的二氧化钛纳米棒的薄层。碳包覆的二氧化钛纳米棒比碳提高了Pt氧还原反应的活性。分别通过X射线衍射，透射电子显微镜和X射线光电子能谱研究了晶体结构，铂纳米颗粒的分散，表面形貌和氧化态。使用常规的三电极设置进行的研究表明，即使经过0.6至1.2 V的40,000个电势循环，Pt / CCT-30仍保留了48％的初始电化学表面积。固体燃料电池模式加速应力耐久性研究表明，碳包覆的二氧化钛纳米棒的薄层-Pt（Pt / CCT 30）可以显着提高稳定性，即使在10,000到1.5 V之间的10,000个潜在循环后，仍可以保持初始燃料电池性能的75％。