Investigation and fabrication of asymmetrical supercapacitor using nanostructured Mn3O4 immobilized carbon nanotube composite

Asymmetric Supercapacitors Based on Hierarchically Nanoporous Carbon and ZnCo2O4 From a Single Biometallic Metal-Organic Frameworks (Zn/Co-MOF)

“…However, it is not easy to find the proper electrode materials for ASCs, because the required materials must not only deliver excellent electrochemical performance but also match well with each other (Zhao et al, 2018 ). Up to now, most reports on ASCs are concerned with the development of a positive electrode only; various metal oxides have been rationally designed, fabricated, and used as positive electrode materials (Choudhary et al, 2017 ; Ranjithkumar et al, 2020 ; Zhu et al, 2020 ). In most instances, activated carbon (AC) has been employed as the negative electrode, and the asymmetric performance of such ASCs was not ideal.…”

Molten salt technique for the synthesis of carbon-based materials for supercapacitors

“…Based on this mechanism, the selection of electrode materials is crucial for achieving high energy density capacitors. [22][23][24][25][26] Carbon based materials have become one of the most widely used energy storage materials due to their…”

CNT/turanite/FeNdCo-alloy electrodes to enhance the capacitance of waterproof/eco-friendly supercapacitors

“…Moreover, carbon nanotubes (CNTs) are widely used for the fabrication of SCs due to their high thermal conductivity (500-2000 W m À1 K À1 ), 16 high theorical surface area of 1315 m 2 g À1 , high charge mobility from 20 to 10 000 cm 2 V À1 s À1 and high young modulus of 1 TPa. 17,18 For this reason, researchers have reported the synthesis and utilization of CNT composites as electrodes for SCs, which produced capacitances and energy densities of: CNT/ZnO (189 F g À1 , 10.7 W h kg À1 ), 19 CNT-Polyaniline (491 F g À1 , 37 W h kg À1 ), 20 Mn 3 O 4 -CNT (499 F g À1 , 19 W h kg À1 ), 21 NiO/ MnO 2 /CNT (1320 F g À1 , 0.15 W h kg À1 ), 22 Polypyrrole-coated NiCoP@CNT (1807.8 F g À1 , 34.8 W h kg À1 ), 23 ZnWO 4 -CNT (4552 F g À1 , 75.1 W h kg À1 ). 24 Despite the high capacitances obtained with CNT based composites, these ones were obtained in three electrode configuration and the energy densities obtained are still low (o100 W h kg À1 ) for commercial applications.…”