Catalyst support is extremely important for future fuel cell devices. In this work, we developed double-shelled C/TiO₂ (DSCT) hollow spheres as an excellent catalyst support via a template-directed method. The combination of hollow structure, TiO₂ shell and carbon layer results in excellent electron conductivity, electrocatalytic activity, and chemical stability. These uniformed DSCT hollow spheres are used as catalyst support to synthesize Pt/DSCT hollow spheres electrocatalyst. The resulting Pt/DSCT hollow spheres exhibited high catalytic performance with a current density of 462 mA mg⁻¹ for methanol oxidation reaction, which is 2.52 times higher than that of the commercial Pt/C. Furthermore, the increased tolerance to carbonaceous poisoning with a higher I_f/I_b ratio and a better long-term stability in acid media suggests that the DSCT hollow sphere is a promising C/TiO₂-based catalyst support for direct methanol fuel cells applications.

催化剂支持对于未来的燃料电池设备极为重要。在这项工作中，我们通过模板定向方法开发了双壳C / TiO ₂（DSCT）空心球，作为极好的催化剂载体。中空结构，TiO ₂壳层和碳层的组合导致优异的电子传导性，电催化活性和化学稳定性。这些均一的DSCT中空球体用作催化剂载体，以合成Pt / DSCT中空球体电催化剂。所得的Pt / DSCT中空球表现出高催化性能，对于甲醇氧化反应的电流密度为462mA mg ^-1，比市售Pt / C的电流密度高2.52倍。此外，对碳中毒的耐受性增强，具有更高的I _f / I _b比和在酸性介质中更好的长期稳定性表明，DSCT中空球体是直接甲醇燃料电池应用中有前途的基于C / TiO ₂的催化剂载体。