A Novel Architecture Intercalating Redox-Active Polymeric Groups within Graphene Frameworks to Host Platinum Nanoparticles for Methanol Oxidation

作者：Shi, Guoyu^*; Wang, Zonghua; Xia, Jianfei; Tang, Jie; Zhang, Feifei; Li, Yanhui; Xia, Yanzhi; Xia, Linhua

来源：International Journal of Electrochemical Science, 2013, 8(6): 8764-8773.

• Methanol oxidation
• Redox-active group
• Graphene
• Platinum nanoparticles
• Antipoisoning effect

Platinum nanoparticles (Pt NPs) are embedded onto poly(acrylic acid)-ferrocene modified graphene nanosheet (PAA-Fc/GN) to form a novel nanocomposite (Pt NPs/PAA-Fc/GN), which is tested for potential use as an anode material through the electrooxidation of methanol. Transmission electron microscope measurements show that Pt NPs evenly disperses onto PAA-Fc/GN with an average particle size of 5.4 nm. Electrochemical measurements demonstrate that Pt NPs/PAA-Fc/GN exhibits higher specific mass activity, enhanced CO-tolerance and superior kinetics for methanol oxidation compared with Pt/GN and traditional PtRu/C catalysts, which is of great significance in direct methanol fuel cell (DMFC) applications. The catalyst's high activity may be attributed to the unique redox-active polymeric frameworks within stacked graphene layers which can not only well accommodate Pt nanoparticles but also provide multidimensional pathways to facilitate the transport of electrons for methanol oxidation.

• 出版日期2013-6
• 单位青岛大学