Dual Role is Always Better than Single: Ionic Liquid as a Reaction Media and Electrolyte for Carbon‐Based Materials in Supercapacitor Applications

Abstract

The burgeoning energy demand necessitates the demand for alternative sources of energy worldwide. The development and enhancement of energy storage devices are the main focus of researchers for sustainable energy production. Carbon supercapacitors have the potential applicability as a commercial source of power. Carbon‐based materials have been synthesized by utilization of ionic liquids (ILs). ILs exhibit unique properties, making them valuable materials to be utilized as a precursor, template, reaction media, and electrolytes for forming carbon‐based materials and enhancing supercapacitors (SCs) performance. This review article provides detailed information about ILs in the field of SCs. First, different attractive properties are illustrated, and then the role of ILs in producing carbon‐based materials in the SCs field is described. The next part provides detailed information regarding the utilization of ILs as electrolytes in carbon‐based SCs. Further, the implementations of ILs as electrolytes in different carbon‐based materials (such as activated carbon, graphene carbon nanotubes, and carbon nanofibers) in SCs are listed. Lastly, the importance of IL‐based materials from other materials and future prospects are provided to the readers, which helps further improve the sustainable development of SCs.

Oxygen-Enriched Hierarchical Nanoporous Carbon Electrodes for Supercapacitors

“…However, with the increase of ultrasonic treatment time, C A began to show a downward trend, which is presumably caused by the damage of the LPC structure. The highest C A value of LPC samples treated by immersion and ultrasonic activation was about 70 mF cm –2 , which revealed that the physical activation methods mainly promoted the electrolyte absorption of LPC. , …”

“…The highest C A value of LPC samples treated by immersion and ultrasonic activation was about 70 mF cm −2 , which revealed that the physical activation methods mainly promoted the electrolyte absorption of LPC. 55,56 Furthermore, we also discussed the influence of three electrochemical activation strategies on the performance of LPC. Specifically, the CV cycle test was carried out at three voltage scanning rates of 20, 50, and 100 mV s −1 until the area of the CV curve region no longer increased.…”

Covalent–Organic Framework-Based Materials in Theranostic Applications: Insights into Their Advantages and Challenges

“…ILs are molten salts with melting points less than 100 °C and have been considered environmentally friendly solvents, making them promising materials for industrial applications. 33 Thomas and his team synthesized porous crystalline COFs via an ionothermal technique. 34 A mixture of molten ZnCl 2 and nitrile was heated at 400 °C, which affords the covalent triazine-based framework (CTF), where ZnCl 2 acts as a solvent and catalyst in a reversible cyclotrimerization reaction.…”

Cellulose‐based smart materials: Novel synthesis techniques, properties, and applications in energy storage and conversion devices

“…Supercapacitors need an electrolyte that links the two electrodes ionically in addition to having the two electrodes separated by an ion-permeable separator. [174][175][176] The four steps of the vapor phase polymerized (VPP) approach are illustrated in Figure 15A: (1) inking the CP matrix with Fe 3þ oxidant media; (2) water-assisted vacuum vapor step polymerization; (3) flushing the sample to release excess oxidant; and (4) drying of the polymerized CP model and CP matrix. Two VPP operations using the aforementioned phases are experienced by one VPP cycle, which is examined in this paper.…”