Development of pristine and Au-decorated Bi₂O₃/Bi₂WO₆nanocomposites for supercapacitor electrodes

Abstract

Pristine and Au-decorated Bi2O3/Bi2WO6 nanocomposites were synthesized via a facile hydrothermal method, and find its application in supercapacitor.

Ultrathin α-Bi2O3 Nanosheets Prepared via Hydrothermal Method for Electrochemical Supercapacitor Applications

“…The equivalent series resistance (R s ), also known as solution resistance which is a blend of electrolyte ionic resistance, inherent resistance of electrode material, and contact resistance at electrolyte-electrode interface can be estimated from the intercept of the nyquist plot with real axis in the high frequency region. 47 Low value of equivalent series resistance obtained (R s = 0.22 Ω) substantiated good ionic response of the electrode. Moreover the semicircle diameter gives charge transfer resistance (R ct ) and slope of the linear portion in lowfrequency region represents Warburg impedance (Z w ) generated by ion diffusion at the electrode-electrolyte interface.…”

Unleashing the Potential: Augmented Supercapacitor Performance of Bi2O3/MnO2@MWCNT Nanocomposites with Redox Additive Electrolyte

“…Meanwhile, the rapid proliferation of drones, laptops, tablets, smartphones, and other electronic devices had emphasized the importance of electrochemical devices, like supercapacitors, which offered a higher power density (P d ). 7,8 Despite their advantages of a higher P d (greater than 10 kW/kg) 9−11 and moderate lifespan compared to other storage devices, 12,13 their energy density (E d ) was still inadequate for direct utilization in smart energy storage systems, which required both high power and energy. 13,14 Consequently, there was a need to develop energy storage devices with advanced materials and/or designs to achieve higher P d and E d values, as well as excellent cycling, chemical and thermal stabilities, and robustness.…”

“…The field of technology had rapidly advanced, but the existing energy devices were insufficient to meet the demands, , specifically in automotive industries, where there was a need for durable and high-power storage devices to support the demand for electric-drive vehicles. − However, the limitations of the current battery technology hindered the widespread adoption of these vehicles. Meanwhile, the rapid proliferation of drones, laptops, tablets, smartphones, and other electronic devices had emphasized the importance of electrochemical devices, like supercapacitors, which offered a higher power density ( P d ). , Despite their advantages of a higher P d (greater than 10 kW/kg) − and moderate lifespan compared to other storage devices, , their energy density ( E d ) was still inadequate for direct utilization in smart energy storage systems, which required both high power and energy. , Consequently, there was a need to develop energy storage devices with advanced materials and/or designs to achieve higher P d and E d values, as well as excellent cycling, chemical and thermal stabilities, and robustness. − Various electrode materials, such as conducting polymers, layered double hydroxides, metal hydroxides, nitrides, chalcogenides, metal oxides, and carbonaceous materials, had been extensively investigated for their potential as electrode materials in energy storage systems. ,, …”

One‐step Electrodeposition Synthesis of Ni(OH)2/PANI/rGO for High‐performance Supercapacitor Electrodes

“…[2] And in PCs, electrode materials such as metallic hydroxide, metallic oxides/sulfides and conducting polymers are the basic candidate materials. [3][4][5][6][7][8] However, their applications are restricted because of their drawbacks. For EDLCs, the charge storage capacity for these carbon materials cannot satisfy the demand of modern high energy supercapacitor systems, due to the limited absorption of electrolytes on the surface of carbon materials.…”

“…Among them, the main electrode materials of EDLCs are carbon materials with large specific surface area, such as graphene, activated carbon, carbon aerogel or carbon nanotubes, etc [2] . And in PCs, electrode materials such as metallic hydroxide, metallic oxides/sulfides and conducting polymers are the basic candidate materials [3–8] . However, their applications are restricted because of their drawbacks.…”