Gigot Arnaud, Fontana Marco, Pirri Candido Fabrizio, Rivolo Paola
Center for Sustainable Future Technologies, Istituto Italiano di Tecnologia, 10129 Torino, Italy.
Dipartimento di Scienza Applicata e Tecnologia, Politecnico di Torino, 10129 Torino, Italy.
Materials (Basel). 2017 Dec 30;11(1):57. doi: 10.3390/ma11010057.
Ruthenium active species containing Ruthenium Sulphide (RuS₂) is synthesized together with a self-assembled reduced graphene oxide (RGO) aerogel by a one-pot hydrothermal synthesis. Ruthenium Chloride and L-Cysteine are used as reactants. The hydrothermal synthesis of the innovative hybrid material occurs at 180 °C for 12 h, by using water as solvent. The structure and morphology of the hybrid material are fully characterized by Raman, XRD, XPS, FESEM and TEM. The XRD and diffraction pattern obtained by TEM display an amorphous nanostructure of RuS₂ on RGO crystallized flakes. The specific capacitance measured in planar configuration in 1 M NaCl electrolyte at 5 mV s is 238 F g. This supercapacitor electrode also exhibits perfect cyclic stability without loss of the specific capacitance after 15,000 cycles. In summary, the RGO/Ruthenium active species hybrid material demonstrates remarkable properties for use as active material for supercapacitor applications.
含硫化钌（RuS₂）的钌活性物种通过一锅水热合成法与自组装还原氧化石墨烯（RGO）气凝胶一起合成。氯化钌和L-半胱氨酸用作反应物。通过使用水作为溶剂，在180°C下进行12小时，合成这种创新的混合材料。通过拉曼光谱、X射线衍射（XRD）、X射线光电子能谱（XPS）、场发射扫描电子显微镜（FESEM）和透射电子显微镜（TEM）对混合材料的结构和形态进行了全面表征。XRD和TEM获得的衍射图谱显示，在RGO结晶薄片上RuS₂为非晶纳米结构。在1 M NaCl电解液中，以5 mV s的扫描速率在平面配置下测得的比电容为238 F g。这种超级电容器电极还表现出完美的循环稳定性，在15000次循环后比电容没有损失。总之，RGO/钌活性物种混合材料作为超级电容器应用的活性材料表现出卓越的性能。
