Details

Autor(en) / Beteiligte

• Guo, Can
• Liu, Ming
• Gao, Guang‐Kuo
• Tian, Xi
• Zhou, Jie
• Dong, Long‐Zhang
• Li, Qi
• Chen, Yifa
• Li, Shun‐Li
• Lan, Ya‐Qian

Titel

Anthraquinone Covalent Organic Framework Hollow Tubes as Binder Microadditives in Li−S Batteries

Ist Teil von

• Angewandte Chemie International Edition, 2022-01, Vol.61 (3), p.e202113315-n/a

Auflage

International ed. in English

Ort / Verlag

Germany: Wiley Subscription Services, Inc

Erscheinungsjahr

2022

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• The exploration of new application forms of covalent organic frameworks (COFs) in Li−S batteries that can overcome drawbacks like low conductivity or high loading when typically applied as sulfur host materials (mostly ≈20 to ≈40 wt % loading in cathode) is desirable to maximize their low‐density advantage to obtain lightweight, portable, or high‐energy‐density devices. Here, we establish that COFs could have implications as microadditives of binders (≈1 wt % in cathode), and a series of anthraquinone‐COF based hollow tubes have been prepared as model microadditives. The microadditives can strengthen the basic properties of the binder and spontaneously immobilize and catalytically convert lithium polysulfides, as proved by density functional calculations, thus showing almost doubly enhanced reversible capacity compared with that of the bare electrode. Covalent organic frameworks could have implications as microadditives of binders (≈1 wt % in cathode) and a series of anthraquinone‐COF based hollow tubes have been prepared as model microadditives to obtain a high‐performance binder in Li−S batteries.