Nanocomposite having hierarchical architecture of MXene-WO3 nanorod@rGOsponge and porous carbon for cathode and anode materials for high-performance flexible all-solid-state asymmetric supercapacitor device

2D-Ti3C2Tx MXene-supported Cu2S nanoflakes for supercapacitors and electrocatalytic oxygen evolution reaction

“…2f, which consists of two peaks at 685.7 and 688.8 eV, corresponding to F-Ti and F-O, respectively. 36 The formation of Cu 2 S, MXene, and Cu 2 S-MXene heterostructures was conrmed by the above-mentioned analyses. In the synthesis Cu 2 S nanoakes, ethylenediamine plays a pivotal role in the crystal growth process.…”

“…: 02-1284). 35 Ti 3 C 2 T x MXene was synthesized from its Ti 3 AlC 2 MAX phase via an LiF/HCl etching process and the reactions involved can be represented by the following equations: 36 LiF (aq) + HCl (aq) / HF (aq) + LiCl (aq)…”

“…S7a †), MXene showed an oxidation and reduction peak at 0.42 and 0.3 V, respectively, when the scan rate was 10 mV s −1 owing to its reversible surface reactions with KOH (eqn ( 5) and ( 6)). 30,36 (5)…”

Heterostructures of MXenes and transition metal oxides for supercapacitors: an overview

“…Moreover, MXene surface terminations could be systematically directed to reduce the irreversible capacity since the electrochemical properties of MXenes greatly depend on the surface chemistry. 48–51,75–80 This minireview systematically focuses on the formation strategies of such heterostructures and highlights the aspects governing their improved energy storage capability.…”

Spent Tea-Waste-Derived Porous Carbon-Supported Truncated Octahedral Cu2O for Highly Efficient Energy Storage Devices

“…Biomass-derived porous carbon is considered an excellent electrode material in recent years owing to its low cost, good chemical stability, high charge storage performance and conductivity, large surface area with a hierarchical porous network, and long cycle life. ,,− However, the low specific capacitance ( C S ) and energy density, and sluggish charge–discharge rate limit its full-blown applications. , Transition metal oxides (TMOs) are another group of materials which is gaining immense attention in recent years. The presence of multiple active sites, rich valences, superior electronic conductivity, and fast electrochemical reaction rates because of reversible reaction mechanisms has proved their potential to be used for the preparation of energy storage materials. − Cu 2 O, having an octahedral structure, is one of the copper-based pseudocapacitive materials which is a promising electrode material because of its large earth abundance, good conductivity, nontoxicity, high C S value, and low cost. But these materials suffer from low energy density and fast capacitive decay. − Thus, the cathode material was rationally designed by immobilizing the octahedral (truncated at the corners)-shaped Cu 2 O on the porous matrix of PC TW to achieve a greater performing electrode material having the advantages of both the materials .…”