Fabrication of High-Performance Asymmetric Supercapacitor Consists of Nickel Oxide and Activated Carbon (NiO//AC)

Abstract

Exploring faster, safer, and more efficient energy storage devices will motivate scientists to develop novel energy storage products with high performance. Herein, we report porous NiO nanoparticles have been prepared by a simple hydrothermal method with CTAB and laboratory tissue paper as a template followed by calcination at three different temperatures (300, 500, and 700 °C). The electrochemical characteristics of the prepared materials were examined in a three-electrode cell configuration using aqueous potassium hydroxide (2.0 M KOH) electrolyte. The NiO-300 electrode displayed the supreme capacitance of 568.7 F g−1 at 0.5 A g−1. The fascinating NiO morphology demonstrates a crucial part in offering simple ion transport, shortening electron, and ion passage channels and rich energetic spots for electrochemical reactions. Finally, the asymmetric supercapacitor (ASC), NiO//AC was constructed using positive and negative electrode materials of NiO-300 and activated carbon (AC), respectively. The assembled ASC displayed excellent supercapacitive performance with a high specific energy (52.4 Wh kg−1), specific power (800 W kg−1), and remarkable cycle life. After quick charging (25 s), such supercapacitors in the series will illuminate the light emitting diode for an extended time, suggesting improvements in energy storage, scalable integrated applications, and ensuring business efficacy. This work will lead to a new generation of high-performance ASCs to portable electronic displays and electric automobiles.

Microwave engineered NiZrO3@GNP as efficient electrode material for energy storage applications

“…The practicability of the NG material as device was assessed by fabrication of an asymmetric type supercapacitor cell in an electrode configuration. 21 The activated carbon and NG nanocomposite were constructed as anode and cathode correspondingly. 22 The slurry of active material (NG), PVDF, and carbon black in the ratio of 80 : 5 : 15 was prepared and coated on the electrode which is used as anode.…”

Recent progress in metal oxide-based electrode materials for safe and sustainable variants of supercapacitors

“…This result also showed that a temperature of 250°C is good for EC properties. Vinodh et al (2022) synthesized the NiO NPs by the hydrothermal method; annealed the material at 300°C, 500°C, and 700°C; and observed the morphology and EC behavior of the material in the presence of a 2 M KOH electrolyte. At 300°C, the prepared material NiO showed a good capacitance of 569 F/g at 0.5 A/g.…”

Recent Advanced Supercapacitor: A Review of Storage Mechanisms, Electrode Materials, Modification, and Perspectives

“…In order to effectively address these problems, the development of hybrid electrodes by combining metal oxides with carbon materials with a high specific surface area, such as activated carbon, graphene, CNTs, and carbon aerogels, has attracted widespread attention. Various metal oxide/carbon material composite electrodes for supercapacitors are summarized in Table 2 [ 181 , 182 , 183 , 184 , 185 , 186 , 187 , 188 , 189 , 190 , 191 , 192 , 193 , 194 , 195 , 196 , 197 , 198 , 199 , 200 , 201 ].…”