Molecular modulation strategies for two-dimensional transition metal dichalcogenide-based high-performance electrodes for metal-ion batteries

Abstract

Through the purposeful modulation of specific parts or regions of TMD molecules, molecular modulation strategies aim to realize the effective modulation of TMDs' properties from an ‘internal’ perspective.

Bio-inspired carbon electrodes for metal-ion batteries

“…It is known that both reversible storage of ions within the crystalline layers and efficient ion transport within the electrode channels are critically important for achieving higher electrochemical performance. 39–41 By exploring the metal-ion deposition stability and transport principles in biological systems, bio-inspired structures with fast ion transport could be achieved for MIBs. During charge–discharge processes in MIBs, the anode with its conventional structure undergoes irreversible volume expansion, and the metal-ion anode eventually succumbs to structural damage leading to failure of the MIBs.…”

Carbon-Coated Si Nanosheets as Anode Materials for High-Performance Lithium-Ion Batteries

“…There is a long way to make full use of the Si anode materials. In recent years, researchers have made several innovative attempts in the design of nanostructures, the construction of composite materials, the improvement of polymer binders, and the optimization of electrolytes to address the aforementioned shortcomings of Si anodes and increase their electrochemical stability. − One of them offers a crucial technique to increase the cycle life of Si-based cationic materials: the construction of nanostructures. , In order to effectively reduce the volume effect of Si-based anode materials in the lithium/delithium process, Si materials have been designed as 0-dimensional nanoparticles, , 1-dimensional nanowires (nanotubes), , 2-dimensional (2D) nanofilms, and 3-dimensional porous nanostructures . Particularly, well-designed 2D structures (nanofilms and nanosheets) have drawn a lot of interest due to their numerous benefits.…”

A fluorine/oxygen co-doping scheme for biomass carbon provides excellent rapid reaction kinetics for sodium/potassium-ion batteries

“…20,21 Heteroatom doping enhances the electrochemical properties of a material by adjusting its electron arrangement, thereby improving battery performance. 22,23 However, the introduced heteroatoms usually have a higher adsorption energy with Na + /K + , which can exacerbate the irreversible adsorption of Na + /K + , leading to a decrease in the initial coulombic efficiency (ICE). Fortunately, this problem can be addressed by pre-sodiation/potassium or by adding sodium/potassium supplements.…”