石墨烯基电催化剂的合成与燃料电池性能研究

Synthesis of Graphene-based Electro-catalyst and Study on Its Fuel Cell Performance

如今,生物乙醇及清洁能源,如醇类燃料电池(DAFCs)作为绿色能源引起广泛社会关注。最为明显是在设计和开发有效的阳极催化材料方面。本文使用一步溶剂热法合成还原态氧化石墨烯(reduced graphene oxide,RGO)/二氧化钛二元复合催化剂(RGO/TiO_2),以氧化石墨和钛酸四丁酯作为前驱体。并通过紫外光还原法,以H_2PtCl_6·6H_2O为前驱体,将Pt纳米颗粒直接沉积在石墨烯和TiO_2的界面间,制备出RGO/TiO_2/Pt三元复合材料,并对产物的形貌和结构进行了深入的研究。RGO/TiO_2/Pt三元纳米复合材料有望比传统的铂催化剂和RGO/Pt具有更高的催化活性和稳定性。

Nowadays, bio ethanol and clean energy as a green energy, such as direct alcohol fuel cell（DAFCs）, have attracted widespread social attention. The most obvious aspect is the design and development of effective anode catalytic materials. The reduced graphene oxide（reduced graphene oxide, RGO）/titanium dioxide two element composite catalyst（RGO/TiO_2） was synthesized by solvothermal method in this paper. And graphite oxide and four butyl titanate were used as precursors. By UV reduction, H_2PtCl_6·6H_2O was used as precursor to deposit Pt nanoparticles directly on the interface between graphene and TiO_2, and RGO/TiO_2/Pt three element composite was prepared. The morphology and structure of the products were studied. RGO/TiO_2/Pt three element nanoscale composite is expected to have higher catalytic activity and stability than traditional platinum catalysts and RGO/Pt.