Department of Chemistry, Thiagarajar College, Madurai 625 009, Tamil Nadu, India.
Department of Chemistry, Thiagarajar College, Madurai 625 009, Tamil Nadu, India.
Ultrason Sonochem. 2020 Apr;62:104871. doi: 10.1016/j.ultsonch.2019.104871. Epub 2019 Nov 12.
The fabrication of hetero structured materials with supercapacitor applications for industrial use remains a key challenge. This work reports a new supercapacitor material with high capacitance, comprising samaria and borazon (OSm/BN) synthesized ultrasonically (40 ± 3 kHz, 200 W). The successful synthesis, probable interfaces between OSm and BN and thermal stability of the nanocomposite were studied by UV-Vis. and FT-IR spectroscopies, X-ray diffraction (XRD) and thermo gravimetric analyses (TGA). The morphology of nanocomposite was investigated by scanning electron microscopy (SEM) and transmission electron microscopy (TEM). Elemental mapping analysis and energy dispersive X-ray analysis (EDAX) confirmed the elements present in the material. This supercapacitor material shows a maximum discharge capacitance of 414 Fg at 0.25 Ag and an exceptional retention of specific capacitance (92.5%) in 5000 cycles. Such nanocomposite with better specific capacitance and charge/discharge rates makes it a right candidate as next generation supercapacitor, which certainly finds applications in various unconventional energy storage devices.
用于工业用途的具有超级电容器应用的异质结构材料的制造仍然是一个关键挑战。本工作报道了一种具有高电容的新型超级电容器材料，该材料由钐和硼氮（OSm/BN）通过超声（40±3 kHz，200 W）合成。通过紫外-可见光谱、傅里叶变换红外光谱、X 射线衍射（XRD）和热重分析（TGA）研究了 OSm 和 BN 之间可能的界面和纳米复合材料的热稳定性。通过扫描电子显微镜（SEM）和透射电子显微镜（TEM）研究了纳米复合材料的形态。元素映射分析和能谱分析（EDAX）证实了材料中存在的元素。这种超级电容器材料在 0.25 Ag 时具有最大放电电容 414 Fg，在 5000 次循环中具有出色的比电容保持率（92.5%）。这种具有更好的比电容和充放电率的纳米复合材料使其成为下一代超级电容器的理想候选材料，它肯定会在各种非常规储能设备中得到应用。
