Cubane cluster interfaced carbon nanotube by ball milling for supercapacitors

Abstract

Interest in the field of next generation energy storage devices using eco-friendly and economic pathways has grown dramatically by utilizing the nanocomposites. Nevertheless, their interim energy retainability and insignificant strength are interpreted as limitations to overcome. In the current work we integrated copper-based cubane cluster with carbon nanotube (cubane@CNT) by a facile green ball milling technique followed by crystallization with hot toluene. The structural integration of the cubane@CNT composite is resolved by the assistance of analytical tools. The Transmission electron microscopy (TEM) and Field emission scanning electron microscope (FESEM) analysis indicated the well-organized cubane on CNT. The specific capacitance shown by pristine cubane is 327 F/g. The cubane@CNT nanoarchitecture demonstrated an elevated capacitance of 396 F/g at current intensity of 2 mA/cm2 and a cyclic retention of 96 % with 5000 charge/discharge cycles. In adding up, the cubane@CNT showed an excellent power density of 123.75 W h/kg and energy density of 1.5 W/kg. The findings would flag a new approach of eco-friendly synthetic protocols for preparing ingredients concerning the enhanced-performing energy storing tools and commercial viability.