论文标题
热氧化的MOS $ _2基于$的杂种作为超级电容器和光电化学应用的优质电极
Thermally Oxidized MoS$_2$-Based Hybrids as Superior Electrodes for Supercapacitor and Photoelectrochemical Applications
论文作者
论文摘要
高电子传输和二硫化钼（MOS $ _2 $）的合理化学稳定性使其非常适合电化学应用。但是，与其他纳米结构相比，其能量存储容量仍然很低。在这项工作中，基于原始和热氧化的MOS $ _2 $（O@MOS $ _2 $）的杂种是通过一种简单的方法引入的，具有增强的电容性能，这要归功于协同效应的贡献。扫描电子显微镜（SEM），透射电子显微镜（TEM），X射线衍射（XRD），元素映射，紫外线可见和拉曼分析用于研究引入杂交的杂交的形态和结构结构。详细，对于MOS $ _2 $：O@mos $ _2 $混合体，与原始电极相比，质量比为2：1，达到了〜205.1 fg-1的最高重量电容。该电极还伴随着最长的放电时间和2000年连续充电循环后的〜％113的出色循环稳定性。此外，与MOS $ _2 $相比，引入电极的光电化学测试导致载体光发电增长约63％，这是由于杂种内有效的电荷分离，这使其适合于水分裂和氢生产应用。
High electronic transport and reasonable chemical stability of molybdenum disulfide (MoS$_2$) make it very suitable for electrochemical applications. However, its energy storage capacity is still low compared with other nanostructures. In this work, pristine and thermally oxidized MoS$_2$ (O@MoS$_2$) based hybrids are introduced by a simple method with enhanced capacitive performance thanks to the contribution of synergistic effects. Scanning electron microscopy (SEM), Transmission electron microscopy (TEM), X-ray diffraction (XRD), elemental mapping, UV-Visible, and Raman analyses are employed to investigate the morphological and crystalline structure of the introduced hybrids. In detail, the highest gravimetric capacitance of ~205.1 Fg-1 is achieved for the MoS$_2$:O@MoS$_2$ hybrid with a mass ratio of 2:1 compared to pristine and other electrodes. This electrode is also accompanied by the longest discharging time and excellent cyclic stability of ~%113 after 2000 continuous charge-discharge cycles. In addition, photoelectrochemical testing of the introduced electrode leads to a ~63% increase in carrier photogeneration compared to MoS$_2$ due to the effective charge separation within the hybrid, which makes it suitable for water splitting and hydrogen production applications.
