We report a strategy to employ two-dimensional Ti3C2Tx MXene as flexible, conductive, and electrochemically active binder for one-step fabrication of MXene-bonded activated carbon flexible electrode supercapacitors in an organic electrolyte. In this electrode, the particles are encapsulated between layers, eliminating need insulative polymer binders. plays multifunctional role including binder, backbone, conductive additive, additional material. The synergetic effect constructs...

2D transition-metal carbides and nitrides, named MXenes, are promising materials for energy storage, but suffer from aggregation restacking of the nanosheets, which limits their electrochemical performance. In order to overcome this problem realize full potential MXene a 3D foam with developed porous structure is established via simple sulfur-template method, freestanding, flexible, highly conductive, can be directly used as electrode in lithium-ion batteries. The architecture offers massive...

Abstract Hard carbon (HC) is a promising anode material for sodium‐ion batteries (SIBs) and potassium‐ion (PIBs), but the volume change during insertion/extraction of Na + or K limits cycle life, especially PIBs due to large ion size . Moreover, conventional anodes fabricated through coating method cannot satisfy requirement flexible devices. Here, it shown that 2D carbide flakes Ti 3 C 2 T x MXene can be used as multifunctional conductive binders HC electrodes. The use nanosheets eliminates...

Abstract Lithium–sulfur (Li–S) batteries with a theoretical energy density of 2567 Wh kg −1 are very promising next‐generation storage systems, but suffer from the insulativity sulfur and Li 2 S, shuttle effect due to dissolution migration polysulfides, lithium dendrite issue. MXenes, family 2D transition metal carbides/nitrides, which have metallic conductivity, structural variety, strong chemical adsorption ability effective catalytic for fast kinetics, inducing uniform growth Li, exhibit...

ZnS has great potentials as an anode for lithium storage because of its high theoretical capacity and resource abundance; however, the large volume expansion accompanied with structural collapse low conductivity cause severe fading inferior rate capability during storage. Herein, 0D-2D nanodots/Ti3C2Tx MXene hybrids are prepared by anchoring nanodots on Ti3C2Tx nanosheets through coordination modulation between MOF precursor (ZIF-8) followed sulfidation. The substrate coupled can...

MXenes, a new family of two-dimensional (2D) materials with excellent electronic conductivity and hydrophilicity, have shown distinctive advantages as highly conductive matrix material for lithium-ion battery anodes. Herein, facile electrostatic self-assembly SnO2 quantum dots (QDs) on Ti3C2Tx MXene sheets is proposed. The as-prepared SnO2/MXene hybrids unique 0D–2D structure, in which the 0D QDs (~ 4.7 nm) are uniformly distributed over 2D controllable loading amount. serve high capacity...

Lithium-sulfur batteries are one of the most promising energy storage devices with high density, but their practical application is hindered by serious capacity fading due to shuttle effect resulting from migration polysulifdes during charge-discharge. Using small sulfur molecules (S2-4), in place conventional cyclo-S8, as cathode materials an efficient method fundamentally eradicate effect. To satisfy demands flexible electronic devices, this paper, two-dimensional (2D) MXene nanosheets...

Sodium-ion batteries (SIBs) are regarded as a kind of promising candidate for large-scale energy storage technology. The development advanced carbon anodes with high Na-storage capacity and initial Coulombic efficiency (ICE) from low cost, resources abundant precursors is critical SIBs. Here, microcrystalline hybridization route to synthesize hard carbons extensive pseudo-graphitic regions lignite coal the assistance sucrose proposed. Employing cross-linked interaction between generate...

Abstract The large‐scale deployment of aqueous Zn‐ion batteries is hindered by Zn anode instability including surface corrosion, hydrogen gas evolution, and irregular deposition. To tackle these challenges, a polyhydroxylated organic molecular additive, trehalose, incorporated to refine the solvation structure promote planar Within regions involving hydroxy groups participate in reconstruction bond networks, which increases overpotential for water decomposition reaction. Moreover, at...

Abstract For the development of electrolyte additives as an effective strategy to improve performance zinc‐ion batteries (ZIBs), most researchers focus on functional groups but overlook crucial molecular configuration. Herein, six stereoisomers 2,3,4,5‐tetrahydroxyvaleraldehyde with identical various spatial arrangements are studied additive in ZIBs. Based experimental analysis and theoretical calculations, adsorption Zn (002) plane is found be important dominant for stereoisomer enhance...

An in situ hard template strategy coupled with NaOH activation is proposed to prepare hierarchical porous carbons high surface area from biomass for high-performance supercapacitors. The preparation of the carbon includes sol–gel process lotus seed shell and sodium phytate, followed by carbonization activation. soluble phytate pyrolyzed nano-Na5P3O10 during then reacts convert nano-Na2CO3 nano-Na3PO4 particles, which are encapsulated matrix as templates leave large mesopores/macropores after...

Abstract MXene nanosheets have been used for preparing highly flexible integrated electrodes due to their two-dimensional (2D) morphology, flexibility, high conductivity, and abundant functional groups. However, restacking of 2D inhibits the ion transport in electrodes, limiting thickness, rate performance, energy storage capacity. Here, we employed a natural sedimentation method instead conventional vacuum-assisted filtration prepare Ti 3 C 2 T x films with enlarged interlayer spacing,...

A Ti₃C₂T_x/CNTs@P nanohybrid with stable Ti–O–P bonds is simply fabricated, which exhibits high capacity, excellent long-term cycling stability and superior rate capability as an anode for lithium ion batteries.

Abstract Bi 2 MoO 6 is a potentially promising anode material for lithium-ion batteries (LIBs) on account of its high theoretical capacity coupled with low desertion potential. Due to conductivity and large volume expansion/contraction during charge/discharge cycling , effective modification indispensable address these issues. In this study, plate-to-layer /Ti 3 C T x (MXene) heterostructure proposed by electrostatic assembling positive-charged nanoplates negative-charged MXene nanosheets....

By creatively utilizing natural inorganic/organic nanocomposites, shrimp skin byproduct was easily converted to nitrogen-rich mesoporous carbon, a promising anode material that showed excellent electrochemical performance for sodium ion batteries.

A review based on the preparation strategies of various MXene derivatives and their applications in field energy storage.

Fe3O4 is a potential anode material for lithium-ion batteries (LIBs) due to its high theoretical capacity (926 mAh g–1) and low cost, but practical application restricted by electrical conductivity large volume changes during lithiation/delithiation. Herein, rationally designed Fe3O4/MXene hybrid heterostructures are constructed using an interfacial self-assembly approach that allows spontaneous deposition of nanodots over Ti3C2Tx MXene nanosheets. The van der Waals-facilitated process...