Two‐Dimensional Metal Oxide Nanomaterials for Next‐Generation Rechargeable Batteries

Abstract

The exponential increase in research focused on two-dimensional (2D) metal oxides has offered an unprecedented opportunity for their use in energy conversion and storage devices, especially for promising next-generation rechargeable batteries, such as lithium-ion batteries (LIBs) and sodium-ion batteries (NIBs), as well as some post-lithium batteries, including lithium-sulfur batteries, lithium-air batteries, etc. The introduction of well-designed 2D metal oxide nanomaterials into next-generation rechargeable batteries has significantly enhanced the performance of these energy-storage devices by providing higher chemically active interfaces, shortened ion-diffusion lengths, and improved in-plane carrier-/charge-transport kinetics, which have greatly promoted the development of nanotechnology and the practical application of rechargeable batteries. Here, the recent progress in the application of 2D metal oxide nanomaterials in a series of rechargeable LIBs, NIBs, and other post lithium-ion batteries is reviewed relatively comprehensively. Current opportunities and future challenges for the application of 2D nanomaterials in energy-storage devices to achieve high energy density, high power density, stable cyclability, etc. are summarized and outlined. It is believed that the integration of 2D metal oxide nanomaterials in these clean energy devices offers great opportunities to address challenges driven by increasing global energy demands.

Scalable 2D Mesoporous Silicon Nanosheets for High‐Performance Lithium‐Ion Battery Anode

“…To date, various 2D anode materials like titanium oxides, transition metal oxides, metal phosphides/sulfides/nitrides, have been extensively applied for LIBs. Among these 2D anode materials, 2D silicon have received intense attention as one of the most promising high‐capacity electrodes for the next‐generation LIBs due to its ultrahigh theoretical lithium storage capacity, faster Li diffusion rates, and relatively low discharge potential, as well as lower diffusion energy barrier (0.23 eV) of lithium ions .…”

3D Current Collectors for Lithium‐Ion Batteries: A Topical Review

“…The current issues of the limited energy/capacity/power output, unstable cyclic performance, and short life span are roadblocks to the development of advanced EESDs. To overcome these issues, in the last few decades, progress on EESDs has been achieved in improving the cathodes and anodes, in particular in the development of novel structured micro‐ and nanosized active materials for the electrodes . In addition, there are reports about novel electrolytes and separators to improve the performance of EESDs.…”

Hierarchy Design in Metal Oxides as Anodes for Advanced Lithium‐Ion Batteries

“…Thus far, decreasing the size of the metal oxide anode materials to micro‐/nanodimensions has remained the primary strategy to improve their electrochemical performances. Many metal oxide nanostructures, including nanoparticles, nanotubes, and nanosheets, have been designed to enhance the Li + /e − transport kinetics as well as buffer the volume expansion/contraction during the discharge/charge process. However, low‐dimensional nanostructures tend to aggregate during the reaction process, resulting in poor cycle life and low capacities at high rate .…”