Review—Methods of Graphene Synthesis and Graphene-Based Electrode Material for Supercapacitor Applications

Abstract

Various types of carbon-based materials have been used as electrode materials for high-performance supercapacitor applications over the years. Graphene is one of the most extensively used carbon-based materials due to its unique properties, which include a high surface area and great conductivity. To take advantage of more of its intriguing features, graphene is customised to make graphene oxide and reduced graphene oxide, which have better water dispersibility and are easy to combine with other materials to form binary or even ternary composites. Due to the fact that binary composites cannot meet the requirements of a high-performance supercapacitor, ternary composites have sparked a lot of attention recently. As a result, a variety of ways have been used to create ternary composites for high-performance supercapacitor applications by combining three different types of electroactive materials. The supercapacitive performance of graphene-based ternary composites with various active components, such as conducting polymers, metal oxide, and other carbon-based materials, is the subject of this research. The performance of graphene-based composites as electrodes in supercapacitors has been greatly improved. This article discusses the synthesis, graphene based supercapacitor electrode materials as well as the application of graphene based nanocomposites as supercapacitor application

Reduced Graphene Oxide Supported TiO2 and P(ANI‐co‐IN) Nanocomposite for Environmental Remediation: Degradation of Dye Pollutants from Toxic Rhodamine B

“…At room temperature, the acquired sample was dried. Using water and ascorbic acid, which is environmentally beneficial, it was then further reduced [32] …”

“…Using water and ascorbic acid, which is environmentally beneficial, it was then further reduced. [32]…”

Graphene Nanocomposite Materials for Supercapacitor Electrodes

“…Following the enthusiastic reports about the properties of graphene and later of graphene-related materials like graphene oxide (GO), reduced graphene oxide (rGO) and further materials like crumpled graphene [1][2][3][4], suggestions of their use in electrochemistrywherein carbon in its numerous forms has been a popular material for electrodes or as components of electrode materials has been around for decades-and in particular in devices for electrochemical energy conversion and storage (EES) [5,6] followed. These suggestions later included their use in supercapacitors [5,[7][8][9][10][11][12][13][14][15][16][17][18]. As an electrode material in the latter application (as well as in battery applications), materials should meet some general requirements:…”

Symmetric supercapacitor based on lamellar coal pitch-derived mesoporous activated carbon

“…Despite exhibiting a higher speci c capacitance, these materials typically suffer from drawbacks such as insu cient cycling stability, high electrical resistivity, and expensive material costs [11][12]. The primary characteristic of the double-layer capacitor resides in its ability to generate an electric double layer consisting of ions or electrons on the electrode material of surface, thereby achieving the storage and discharge of electrical energy [13][14][15]. The electrode material of the bilayer is mainly a porous carbon material, which gives it better cycling stability and rate performance [16][17].…”