Silver Nanoparticles Decorated Polyaniline/Multiwalled Carbon Nanotubes Nanocomposite for High-Performance Supercapacitor Electrode

Abstract

In the modern era, it is still a challenge to develop an easy, inexpensive, and scalable technique to fabricate an energy storage system. Here, a low-cost and simple process was used to fabricate a silver−polyaniline/multiwalled carbon nanotubes ((Ag-PANI)/MWCNTs) nanocomposite for high-performance supercapacitor electrodes. The possible interactions between Ag and PANI were characterized by Fourier transform infrared and UV−visible spectroscopies. Morphological study confirmed the formation of Ag nanoparticles in the PANI surface, and the MWCNTs were uniformly coated by PANI with the presence of Ag nanoparticles. The nanocomposite showed better electrical conductivity of 4.24 S/cm at room temperature and also attained nonlinear current−voltage characteristics. The highest specific capacitance of 528 F/g has been obtained for the nanocomposite at 5 mV/s scan rate. The nanocomposite also showed better energy as well as power density. Ag-PANI/CNT based supercapacitors with outstanding energy and power density make them a potentially promising candidate for future energy storage systems.

Polyaniline integrated carbon nanohorn: A superior electrode materials for advanced energy storage

“…In the PACN composites, PANI coated CNH increased the intimate interaction between them (PANI and CNH) that facilitate to enhance the charge transfer among the components with high electrical conductivity. Thus, the effective charge transfers in the electrode takes part a crucial role to enhance the specific capacitance value as well as rate capability of the composites [30,31]. The well-ordered nanostructure in the PACN composites can reduce the ionic diffusion path, facilitate ionic motion to the inner part, and improve utilization of electrode materials.…”

Hierarchically porous metallic silver monoliths: facile synthesis, characterization and its evaluation as an electrode material for supercapacitors

“…/Ag which contributes to the Faradaic current. Metallic silver in its porous structure gets oxidized at 0.27 ± 0.01 V and its reverse reduction peak is obtained at 0.14 ± 0.01 V [26,27]. However, CV curve obtained at pAg/GCE (Fig.…”

“…In addition, porous materials find their applications as electrode materials in electrochemical double-layer capacitors (EDLCs) due to advantageous features such as three dimensional porous morphology, high internal energy storage, good electrical conductivity, and adequate corrosion resistance [7][8][9].…”

Manganese oxides-based composite electrodes for supercapacitors

“…However, most of the reports only focus on the influence of one of these two factors. These researches are rare that enhance materials' property by designing the combination between capacitor materials with different activity under the micro or Nano scale, therefore it's still not clear about the synergy effect of different components neither size effect on the performance [7][8]. It is a great challenge to realize low-cost and large-scale fabrication of flexible SCs with high performance.…”