Review on MXene synthesis, properties, and recent research exploring electrode architecture for supercapacitor applications

Abstract

MXenes have potential applications in the field of supercapacitors. As a twodimensional material, how its structure, properties, and surface chemistry facilitate energy storage is discussed. A detailed analysis of the synthesis of MXenes and factors affecting energy storage in supercapacitor grounds is explained in detail. Possibilities of anode architecture to improve supercapacitor performance on industrial standards are discussed. This review will aid in planning better MXene hybrid anodes to assemble supercapacitors with desired electrochemical performance. Ways to improve capacitance, energy density, and voltage window of electrodes are explained based on literature reports. Electrochemical performance is evaluated by the effect of hierarchical structures, heterostructures, transition metal oxides, carbon compounds, polymers, and so on. Anode fabrication methods for modern micro-supercapacitors are also incorporated in this study. A good selection of electrolytes and fabrication techniques adapted for MXene-based anode fabrication is emphasized. This review will help in future options of supercapacitor anode designing.

Electrochemically Stable Carbazole-Derived Polyaniline for Pseudocapacitors

“…However, there is a need for both high-energy and high-power density in a single device, and supercapacitors (SC) can achieve both. Many materials such as metal oxides, metal–organic frameworks, MXenes, carbon-based nanomaterials, and CPs have been evaluated as SC materials; − however, the high cost, low capacitance, and instability of the devices are common problems with such materials. , Among the list of SC materials, CPs are attractive for flexible energy storage devices, due to their synthetic structural diversity, wide range of tunable properties (e.g., electrical, mechanical, electrochemical, and optical) and their potential for scalable device fabrication . The redox activity (i.e., pseudocapacitive energy storage) of CPs can be controlled by tailoring the chemical structure of the polymer backbone.…”

The synthesis of Ni/Mn hexacyanoferrate microcubes and nanorods for high‐performance asymmetric supercapacitor in neutral electrolyte

“…With low cost, small size, high power density, and long cycling life, supercapacitor has been regarded as a promising energy storage device in numerous applications such as electric automobile and mobile electronics 1,2 . Electrodes for supercapacitor can be classified as capacitive‐type electrodes and battery‐type electrodes.…”

“…With low cost, small size, high power density, and long cycling life, supercapacitor has been regarded as a promising energy storage device in numerous applications such as electric automobile and mobile electronics. 1,2 Electrodes for supercapacitor can be classified as capacitive-type electrodes and battery-type electrodes. For capacitive-type electrodes, which are usually based on carbon materials, the charges are stored in the double layer at the electrode/electrolyte interface.…”

Energetic Stability and Interfacial Complexity of Ti3C2Tx MXenes Synthesized with HF/HCl and CoF2/HCl as Etching Agents

“…1 These ultra-thin ceramics present great potential in various applications, especially in electrochemical energy storage. [2][3][4][5] Compositionally, MXenes are early transition metal carbides and nitrides in the form of Mn+1XnTx, where M is an early transition metal such as Ti or V, X is C or N, and Tx represents the capping end-groups (-F, -OH, =O, etc.) determined primarily by the synthesis environment.…”