Two‐Dimensional Metal‐Containing Nanomaterials for Battery Anode Applications

Abstract

Secondary batteries, as portable energy storage and supply devices, are becoming an attractive research field that is drawing a lot of attention. Selection of electrode materials plays a crucial role in the battery performances. However, most bulk materials have a lot of limitations when used as battery anodes for lithium‐ion batteries (LIBs) and sodium‐ion batteries (SIBs). Recently, two‐dimensional nanomaterials (2D materials) have been fabricated to address these problems. The high specific surface area of 2D materials can facilitate the electrochemical process during charge–discharge cycles. Therefore, anode materials with expected performances can be designed and be synthesized. In this Review, we summarize the recent development of metal‐containing 2D nanomaterials for battery anode applications. The relation between 2D structure and electrochemical performance of materials have been presented. Additionally, existing problems and possible solutions have also been discussed.

Addressing Irreversibility and Structural Distortion in WS2 Inorganic Fullerene-Like Nanoparticles: Effects of Voltage Cutoff Experiments in Beyond Li+-Ion Storage Applications

“…Only the low-voltage region of the 0.01 V peak continued through the 100th cycle. The discontinuation of peaks may nonetheless be ascribed to mechanical stress generation within the WS 2 IFs and structure pulverization upon repeated Li + -ion insertion/extraction. − A possible explanation for reaction peak discontinuation might be that the structure completely changes after specific cycles due to repeated cycling; therefore, no reaction proceeds further because no sites are available. Comparatively, for the 0.01–1.5 V cell, during lithiation, cumulative peaks around 0.01–0.6 V maintain their intensity in Figure S4b1.…”

Self‐Assembled 2D VS2/Ti3C2Tx MXene Nanostructures with Ultrafast Kinetics for Superior Electrochemical Sodium‐Ion Storage

“…Two‐dimensional (2D) nanostructures have been extensively adopted as anode materials for sodium‐ion batteries (SIBs) due to their unusual physical/chemical properties. [ 1 , 2 , 3 , 4 , 5 ] Compared with zero‐dimensional (0D) and one‐dimensional (1D) nanostructures, 2D nanostructured electrodes show larger and more active spaces and locations, contributing to the rapid electrochemical reaction kinetics. [ 6 , 7 ] However, 2D materials are very easy to aggregate and self‐stack, which inevitably limits the sodium storage performance.…”