【摘要】 以间苯二酚和甲醛为碳前体,合成了一种新型碳纳米材料碳纳米带(CNRs),并采用透射电镜(TEM)、X射线衍射(XRD)及氮气吸附/脱附测试对CNRs进行了结构表征.结果表明,所合成的CNRs具有很高的石墨化程度及较规则的带状结构,带宽约为8~20 nm,BET比表面积为283 m2/g,氮气等温线为type-Ⅳ型,表明CNRs为中孔结构,平均孔径约为8.2 nm.以CNRs为载体通过多元醇法制备了45%PtRu/CNRs电催化剂,该催化剂与以Vulcan XC-72R为载体的PtRu电催化剂相比,直接甲醇燃料电池单池性能得到明显提高.更多还原

【Abstract】 Carbon nanoribbons(CNRs) were synthesized using the resorcinol-formaldehyde gel as a precursor and were characterized by(X-ray) diffraction,transmission electron microscopy,and nitrogen adsorption-desorption.CNRs are highly graphitized and the width of the ribbon is 8-20 nm.The BET surface area of CNRs is 283 m~2/g,and the nitrogen isotherm for the CNRs with an average pore size of 8.2 nm is classified as(type-Ⅳ.) A platinum-based binary electrocatalyst,PtRu/CNRs,using CNRs as the support and having a metal loading of 45% was prepared using a modified polyol process.The performance of the single cell using PtRu/CNRs as the anode electrocatalyst is significantly improved when compared with that using Vulcan XC-72R as the support,indicating that CNRs are promising electrocatalyst supports for direct methanol fuel cells.更多还原