Atomically Thin Nanosheets Confined in 2D Heterostructures: Metal‐Ion Batteries Prospective

Abstract

Owing to the surge of energy storage devices, lithium and beyond‐lithium metal ion batteries (MIBs) have gained considerable research attention. The large size and multivalent ions drastically deteriorate the performance of conventional battery electrode materials which demands unique types of structures in order to fulfill the electrode requirements of next‐generation MIBs. Developing atomically thin nanosheets confined in 2D heterostructures is a favorable choice to synergistically handle the deficiencies of individual 2D materials and achieve distinct physical and electrochemical properties, retaining their 2D features. This article sheds light on the significance and characteristics of graphene‐based and beyond‐graphene 2D heterostructures as electrode materials in lithium‐ion, sodium‐ion, potassium‐ion, magnesium‐ion, and aluminum‐ion batteries. In this regard, the pathways for the selection of 2D heterostructures electrode materials and their possible geometric configurations are first recognized. Second, the fundamental science, underlying charge storage mechanisms, and robust interfacial charge transfer processes in 2D heterostructures are discussed comprehensively in the context of recent computational studies. Third, the recent state‐of‐the‐art experimental approaches for the fabrication of novel 2D heterostructures and their performance as anode and cathode materials for MIBs are discussed systematically. Finally, the current challenges facing 2D heterostructures and potential future research directions in the context of advanced MIBs are highlighted.

Biomass‐Derived Carbon for High‐Performance Batteries: From Structure to Properties

“…[223,224] Meanwhile, the electrons are effectively transmitted along carbon sheets, which greatly improves the conductivity of the material, and provides convenient conditions for the design and application of BDC materials. [225,226]…”

Robust Lithium–Sulfur Batteries Enabled by Highly Conductive WSe2‐Based Superlattices with Tunable Interlayer Space

“…To the best of our knowledge, this is the widest continuous adjustable range of interlayer spacing reported for a 2D material, which opens the door to a wide range of applications not only in the field of rechargeable batteries but also in other fields like ionic sieves. [7] As obtained with the four-point probe method, the NG/WSe 2 superlattices annealed at 800 °C displayed a high electrical conductivity, up to 6.47 S cm −1 , which was two orders of magnitude above that of WSe 2 -800 (Figure S7, Supporting Information). As expected, the electrical conductivity significantly increased with the calcination temperature.…”

“…[ 10,14 ] In the field of energy storage, proper tailoring of the interlayer spacing has great potential for the engineering of the next generation of hybrid ion supercapacitors and secondary batteries based on Mg/K/Zn for instance. [ 7 ] However, effective optimization of the material's functional properties requires a precise tuning of its structural and chemical properties that has remained elusive. While superlattice materials with enlarged interlayer spacing have been reported, [ 5 ] a continuous and precise adjustment of the interlayer spacing to provide ion‐selective 2D channels is yet to be accomplished.…”

Prospective advances in MXene inks: screen printable sediments for flexible micro-supercapacitor applications

“…In this context, conductive and semi-conductive two-dimensional (2D) nanomaterials with a high surface area and unique physicochemical properties have been more focused on in the last decade as functional material inks for this purpose. 6–10 2D nanomaterials (2DNMs) such as graphene, 6,11 MoS 2 , 12,13 MoSe 2 , 9,12,14 g-C 3 N 4 , 15 h-BN, 16 etc. , are well studied as active ingredients in ink formulation for the printing of high-quality electronic devices in varieties of applications such as MSCs, 2 micro-batteries (MBs), 17 sensors, 18 photodetectors, 19 electromagnetic interference shielding, 20,21 and solar cells.…”