An Overview of the Applications of Graphene‐Based Materials in Supercapacitors

Abstract

Due to their unique 2D structure and outstanding intrinsic physical properties, such as extraordinarily high electrical conductivity and large surface area, graphene-based materials exhibit great potential for application in supercapacitors. In this review, the progress made so far for their applications in supercapacitors is reviewed, including electrochemical double-layer capacitors, pseudo-capacitors, and asymmetric supercapacitors. Compared with traditional electrode materials, graphene-based materials show some novel characteristics and mechanisms in the process of energy storage and release. Several key issues for improving the structure of graphene-based materials and for achieving better capacitor performance, along with the current outlook for the field, are also discussed.

Supercapacitors specialities - Materials review

“…An overview of graphene based materials and their applications in supercapacitors is given in [47]. Graphene oxide is the main precursor for the preparation of different graphene derivatives materials [48].…”

Water-soluble polyaniline/graphene composites as materials for energy storage applications

“…Combining the unique properties of graphene and polyaniline, graphene/polyaniline composites are a new class of performing materials that have attracted much attention of researchers in the last years due to the synergistic effects on their thermal, electronic and mechanical properties [13][14][15]. They have been developed and investigated for use mainly as high-performance supercapacitor electrode materials [16], microwave shielding [17], corrosion protection [18] or counter-electrode for dye-sensitized solar cells [19]. The performances of graphene/PANI composites are strongly dependent on the interfacial interactions between partners providing a blending to molecular level, without segregation during synthesis and operation.…”

Flexible Supercapacitors – Development of Bendable Carbon Architectures

“…[55] Its unique structure and properties make graphene promising for a EDLC electrodes. [56] Although pure graphene sheets with high quality can be prepared by mechanical cleavage of graphite [57] or CVD method at high temperature, [58][59][60][61][62][63][64][65][66][67][68][69][70][71][72][73][74][75][76] these methods suffer from high cost, high temperature, substrate limitation, and extremely low yield. In addition, the surface of pristine graphene is so hydrophobic that pristine graphene tend to agglomerate in solvents, leading to the loss of excellent properties of monolayer graphene sheets.…”