Covalent Organic Frameworks for Separator Modification of Lithium–Sulfur Batteries,Macromolecular Rapid Communications

当前位置： X-MOL 学术 › Macromol. Rapid Commun. › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

Covalent Organic Frameworks for Separator Modification of Lithium–Sulfur Batteries
Macromolecular Rapid Communications ( IF 4.2 ) Pub Date : 2022-11-17 , DOI: 10.1002/marc.202200760
Yaxin Wang ₁ , Xuemiao Yang ₁ , Pengyue Li _{1,

2} , Fangling Cui ₁ , Ruihu Wang ₁ , Xiaoju Li _{1,

2}

Affiliation

Lithium–sulfur (Li–S) batteries are regarded as one of the promising energy storage systems. However, rapid capacity attenuation caused by shuttle effect of soluble polysulfides is major challenge in practical application. The separator modification is regarded as one countermeasure besides the construction of sulfur host materials. Covalent organic frameworks (COFs) are one type of outstanding candidates for suppressing shuttle effect of polysulfides. Herein, recent advances of COFs in the application as commercial separator modifiers are summarized. COFs serve as ionic sieves, the importance of porous size and surface environments in inhibiting soluble polysulfides shuttling and promoting lithium ions conduction is highlighted. The superiority of charge-neutral COFs, ionic COFs, and the composites of COFs with conductive materials for improving reversible capacity and cycling stability is demonstrated. Some new strategies for the design of COF-based separator modifiers are proposed to achieving high energy density. The review provides new perspectives for future development of high-performance Li–S batteries.

中文翻译：

用于锂硫电池隔膜改性的共价有机框架

锂硫（Li-S）电池被认为是有前途的储能系统之一。然而，可溶性多硫化物的穿梭效应引起的快速容量衰减是实际应用中的主要挑战。隔膜改性被认为是除硫主体材料构建之外的一种对策。共价有机框架 (COF) 是抑制多硫化物穿梭效应的一类杰出候选材料。本文总结了 COF 在商业隔膜改性剂应用中的最新进展。COF 作为离子筛，多孔尺寸和表面环境在抑制可溶性多硫化物穿梭和促进锂离子传导方面的重要性得到强调。电中性COF、离子COF的优越性，并展示了 COF 与导电材料的复合材料，以提高可逆容量和循环稳定性。提出了一些设计基于 COF 的隔膜改性剂的新策略，以实现高能量密度。该综述为高性能锂硫电池的未来发展提供了新的视角。

更新日期：2022-11-17

点击分享查看原文

点击收藏

阅读更多本刊最新论文本刊介绍/投稿指南11