【作者】 武明星； 武克忠； 朱亚静； 郑海阔； 高晨静； 韩乾戟；

【Author】 Wu Mingxing;Wu Kezhong;Zhu Yajing;Zheng Haikuo;Gao Chenjing;Han Qianji;College of Chemistry and Material Science,Hebei Normal University;

【机构】 河北师范大学化学与材料科学学院；

【摘要】 本工作将包括实心碳球、空心碳球、以及表面开口碳球在内的三种碳球作为对电极用于染料敏化太阳能电池(图1)。实验结果表明碳球的催化性能受表面形貌、内部结构以及粒径大小的影响。以这三种碳球为对电极的电池效率分别达到7.8%(实心碳球),8.7%(开口碳球),8.1%(空心碳球),这三种碳球电极表现出取代昂贵Pt电电极的巨大潜力[1,2]。表面开口为电池电解液提供扩散通道,有利于电对分别与碳球的内部和表面接触,所以这种电极表现出超高的催化活性。不仅仅局限在催化领域,表面开口这种设计策略对药物传输、纳米器件、吸附都有重要的研究意义。更多还原

【Abstract】 In this work, we introduced three kinds of carbon spheres as counter electrodes(CE) in dye-sensitized solar cells(DSCs), containing solid and hollow carbon spheres(SCS, OCS), and a new kind of carbon sphere(denoted as OCS) with an open end on the surface(Fig.1). The experimental results proved that the catalytic activities were influenced by the surface morphologies, inner structures, and diameters of the carbon spheres. The DSCs using SCS, OCS, and HCS CEs yield high efficiencies of 7.8, 8.7, and 8.1%, respectively, indicating great potential to replace the expensive Pt CE [1,2]. The high catalytic activity of OCS benefits from the sufficient contact between the redox shuttle with the external and internal surfaces of OCS because the open ends provide diffusion channel for the electrolyte. The strategy for designing open-ended structure is highly important for the fields of drug delivery, nano-device, and adsorption, but not confined to catalysis.更多还原