Khandare Lina N, Late Dattatray J, Chaure Nandu B
Department of Physics, Savitribai Phule Pune University, Pune, India.
Centre for Nanoscience and Nanotechnology, Amity University Maharashtra, Mumbai, India.
Front Chem. 2023 Aug 22;11:1166544. doi: 10.3389/fchem.2023.1166544. eCollection 2023.
The MoS nanobelts/Carbon hybrid nanostructure was synthesized by the simple hydrothermal method. The MoS nanobelts were distributed in the interlayers of Lemon grass-derived carbon (LG-C), provides the active sites and avoid restacking of the sheets. The structural and morphological characterization of MoS/LG-C and LG-C were performed by Raman spectroscopy, X-ray diffraction, field emission scanning electron microscopy, transmission electron microscopy, and X-ray photoelectron spectroscopy. The electrochemical measurements were studied with cyclic voltammetry, the galvanostatic charge-discharge method, and electrochemical impedance spectroscopy. The specific capacitance of MoS/LG-C and LG-C exhibits 77.5 F g and 30.1 F g at a current density of 0.5 A g. The MoS/LG-C-based supercapacitor provided the maximum power density and energy density of 273.2 W kg and 2.1 Wh kg, respectively. Furthermore, the cyclic stability of MoS/LG-C was tested using charging-discharging up to 3,000 cycles, confirming only a 71.6% capacitance retention at a current density of 3 A g. The result showed that MoS/LG-C is a superior low-cost electrode material that delivered a high electrochemical performance for the next generation of electrochemical energy storage.
通过简单的水热法合成了二硫化钼纳米带/碳混合纳米结构。二硫化钼纳米带分布在柠檬草衍生碳（LG-C）的层间，提供活性位点并避免片层的重新堆叠。通过拉曼光谱、X射线衍射、场发射扫描电子显微镜、透射电子显微镜和X射线光电子能谱对二硫化钼/LG-C和LG-C进行了结构和形态表征。用电化学循环伏安法、恒电流充放电法和电化学阻抗谱进行了电化学测量。在电流密度为0.5 A g时，二硫化钼/LG-C和LG-C的比电容分别为77.5 F g和30.1 F g。基于二硫化钼/LG-C的超级电容器的最大功率密度和能量密度分别为273.2 W kg和2.1 Wh kg。此外，使用充放电测试了二硫化钼/LG-C高达3000次循环的循环稳定性，结果表明在电流密度为3 A g时电容保持率仅为71.6%。结果表明，二硫化钼/LG-C是一种优异的低成本电极材料，可为下一代电化学储能提供高电化学性能。
