Rational Engineering of Anode Current Collector for Dendrite-Free Lithium Deposition: Strategy, Application, and Perspective

Abstract

Lithium metal anodes have attracted extensive attention due to their high theoretical capacity and low redox potential. However, low Coulombic efficiency, serious parasitic reaction, large volume change, and dendrite growth during cycling have hindered their practical application. The engineering of an anode current collector provides important advances to solve these problems, eliminate excess lithium usage, and substantially increase the energy density. In this review, we summarize the engineering strategies of an anode current collector with emphasis on different methods and applications in lithium metal-based systems. Finally, the perspectives and challenges of current collector engineering for lithium metal anode are discussed.

MOF‐Derived Materials Enabled Lithiophilic 3D Hosts for Lithium Metal Anode — A Review

“…As a result, in order to improve the Li affinity, many strategies have been taken for modifying the 3D hosts, such as electrodeposition, [ 45 ] atomic layer deposition, [ 46‐49 ] thermal spraying, [ 50‐51 ] and so on. The advantages and disadvantages of modifying 3D hosts in different ways mentioned above have been reviewed well in ref., [ 27,52‐53 ] thus these reported methods in previous studies are not the topic of this work.…”

Improvements in the Magnesium Ion Transport Properties of Graphene/CNT‐Wrapped TiO2‐B Nanoflowers by Nickel Doping

“…In addition, lithium dendrites will be produced during charging and discharging of lithium batteries, which will cause serious safety problems. [11,12] Therefore, researchers propose a post-lithium strategy, which is mainly to develop some new rechargeable batteries with higher energy density. The excellent combination of high energy density, low cost, and superior safety (owing to the absence of dendrite-related issues) has made the magnesium-ion battery an attractive candidate for nextgeneration rechargeable batteries.…”

Enhancing the Cycle Life of Lithium‐Anode‐Free Batteries through Polydopamine‐Coated Substrates

“…electrolyte decomposition, breakage of SEI layers, and formation of lithium dendrites or dead lithium. [9,13,[17][18][19][20][21] Moreover, irreversible consumption of deposited lithium on copper during the initial cycles was a significant challenge for anode-free cells. [9,12,22] Therefore, several approaches have been implemented to enhance the electrochemical performances, such as combining two different electrolytes, [22,23] modifying the chemical composition of the SEI layer through electrolyte design, [20,23] and introducing a stabilized layer on the current collector.…”