Regulating the kinetic behaviours of polysulfides by designing an Au–COF interface in lithium–sulfur batteries

Li, Chan; Yang, Ke; Ma, Zelin; Zhao, Fei; Li, Juan; Xu, Xinwu; Hao, Xiaoyu; Qi, Haoyuan; He, Yibo

doi:10.1039/d3ta05859j

J. Mater. Chem. A

2024

DOI: 10.1039/d3ta05859j

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Regulating the kinetic behaviours of polysulfides by designing an Au–COF interface in lithium–sulfur batteries

Chan Li,

Ke Yang,

Zelin Ma

et al.

Abstract: Au–COF/rGO was designed to build a multifunctional interface, which can form an orderly connection between confinement–capture–conversion of polysulfides and promote the diffusion of Li+, achieving outstanding performance of Li–S batteries.

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Cited by 7 publications

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Pristine MOF Materials for Separator Application in Lithium–Sulfur Battery

Cheng,

Lian,

Zhang

et al. 2024

Advanced Science

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Lithium–sulfur (Li–S) batteries have attracted significant attention in the realm of electronic energy storage and conversion owing to their remarkable theoretical energy density and cost‐effectiveness. However, Li–S batteries continue to face significant challenges, primarily the severe polysulfides shuttle effect and sluggish sulfur redox kinetics, which are inherent obstacles to their practical application. Metal‐organic frameworks (MOFs), known for their porous structure, high adsorption capacity, structural flexibility, and easy synthesis, have emerged as ideal materials for separator modification. Efficient polysulfides interception/conversion ability and rapid lithium‐ion conduction enabled by MOFs modified layers are demonstrated in Li–S batteries. In this perspective, the objective is to present an overview of recent advancements in utilizing pristine MOF materials as modification layers for separators in Li–S batteries. The mechanisms behind the enhanced electrochemical performance resulting from each design strategy are explained. The viewpoints and crucial challenges requiring resolution are also concluded for pristine MOFs separator in Li–S batteries. Moreover, some promising materials and concepts based on MOFs are proposed to enhance electrochemical performance and investigate polysulfides adsorption/conversion mechanisms. These efforts are expected to contribute to the future advancement of MOFs in advanced Li–S batteries.

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Pristine MOF Materials for Separator Application in Lithium–Sulfur Battery

Cheng,

Lian,

Zhang

et al. 2024

Advanced Science

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Lithiophilic Covalent Organic Framework as Anode Coating for High‐Performance Lithium Metal Batteries

Wu,

Zhang,

et al. 2024

Angewandte Chemie

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The growth of disorganized lithium dendrites and weak solid electrolyte interphase greatly impede the practical application of lithium metal batteries. Herein, we designed and synthesized a new kind of stable polyimide covalent organic frameworks (COFs), which have a high density of well‐aligned lithiophilic quinoxaline and phthalimide units anchored within the uniform one‐dimensional channels. The COFs can serve as an artificial solid electrolyte interphase on lithium metal anode, effectively guiding the uniform deposition of lithium ions and inhibiting the growth of lithium dendrites. The unsymmetrical Li||COF‐Cu battery exhibits a Coulombic efficiency of 99% at a current density of 0.5 mA cm‐2, which can be well retained up to 400 cycles. Meanwhile, the Li‐COF||LFP full cell shows a Coulombic efficiency over 99% at a charge of 0.3 C. And its capacity can be well maintained up to 91% even after 150 cycles. Therefore, the significant electrochemical cycling stability illustrates the feasibility of employing COFs in solving the disordered deposition of lithium ions in lithium metal batteries.

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Lithiophilic Covalent Organic Framework as Anode Coating for High‐Performance Lithium Metal Batteries

Wu,

Zhang,

et al. 2024

Angew Chem Int Ed

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Regulating the kinetic behaviours of polysulfides by designing an Au–COF interface in lithium–sulfur batteries

Abstract: Au–COF/rGO was designed to build a multifunctional interface, which can form an orderly connection between confinement–capture–conversion of polysulfides and promote the diffusion of Li+, achieving outstanding performance of Li–S batteries.

Cited by 7 publications

References 58 publications

Pristine MOF Materials for Separator Application in Lithium–Sulfur Battery

Pristine MOF Materials for Separator Application in Lithium–Sulfur Battery

Lithiophilic Covalent Organic Framework as Anode Coating for High‐Performance Lithium Metal Batteries

Lithiophilic Covalent Organic Framework as Anode Coating for High‐Performance Lithium Metal Batteries

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