Recent Developments in All-Solid-State Micro-Supercapacitors Based on Two-Dimensional Materials

Abstract

Owing to their unique features such as high surface area, rich electroactive sites, ultrathin thickness, excellent flexibility and mechanical stability and multiple surface functionalities enables outstanding electrochemical response which provides high energy and power density supercapacitors based on them. Also, the Van der Waals gap between layered 2D materials encourages the fast ion transport with shorter ion diffusion path. 2D materials such as MXenes, graphene, TMDs, and 2D metal–organic frame work, TMOs/TMHs materials, have been described with regard to their electrochemical properties for MSCs. We have summarized the recent progress in MSC based on well-developed 2D materials-based electrodes and its potential outcomes with different architectures including interdigitated pattern, stacked MSC and 3D geometries for on-chip electronics. This chapter provides a brief overview of the recent developments in the field of 2D material based all-solid-state microsupercapacitors (MSCs). A brief note on the MSC device configuration and microfabrication methods for the microelectrodes have been discussed. Taking advantage of certain 2D materials such as 2D MXenes, TMDs, TMOs/TMHs that provide good surface chemistry, tunable chemical and physical properties, intercalation, surface modification (functionalization), heterostructures, phase transformations, defect engineering etc. are beneficial for enhancement in pseudocapacitance as it promotes the redox activity.

Recent developments, challenges and future prospects of magnetic field effects in supercapacitors

“…128,129 Factors such as low energy storage capability, low cycling stability, volume expansion and aggregation during electrochemical reactions are a few of the inherent deciencies of pristine supercapacitor electrode materials. 130,131 Studies across the globe revealed that a hybrid formation of these pristine electrode materials can overcome many of these deciencies. [132][133][134] One of the well-established hybrid formations is pseudocapacitor/EDLC hybrids.…”

From fundamental to CO2 and COCl2 gas sensing properties of pristine and defective Si2BN monolayers

“…1 Although 2D materials have arisen as hopeful candidates for numerous applications, only a few dozen 2D materials have been successfully exfoliated and synthesized. 2 Furthermore, numerous experimental and theoretical studies on different families of 2D materials have been carried out to examine their properties for different potential applications in rechargeable metal-ion batteries as the anode, [3][4][5][6][7][8][9][10] environmental gas monitors, 11,12 biosensors, [13][14][15] supercapacitors, 16 and catalysts. [17][18][19][20] The 2D materials composed of light elements such as B, C, and N have received more attention due to their extraordinary structural and electronic properties, mechanical strength, and adsorption properties in their pristine and defect-filled forms.…”