Stable Flavone‐Linked Covalent Organic Frameworks for High‐Performance Lithium‐ion Battery Anodes
Year: 2025
Type: article
Abstract: The design and synthesis of stable and efficient anode materials for organic lithium‐ion batteries (LIBs) are critical for achieving environmental sustainability. Herein, a flavone‐linked covalent organic framework (FV‐COF) with high crystallinity is synthesized via a cascade reaction based on the Claisen‐Schmidt condensation for anodes of LIBs. The incorporation of an oxygen‐rich flavonoid structure and a fully conjugated framework endows FV‐COF with exceptional physicochemical stability and reversible redox capacity. Thus, FV‐COF demonstrates exceptional performance as an anode material, delivering a high steady‐state capacity of 1136.8 mA h g−1 after ten cycles at 0.1 A g−1 and excellent rate capability. In particular, the cyclic stability of FV‐COF retained a capacity of 546.5 mAh g−1 at 5.0 A g−1 after 10 000 cycles, accompanied by a Coulombic efficiency exceeding 98%. This work demonstrates that COFs with rich redox site and stable linkages are promising candidates for developing lightweight batteries.
Source: Small
Authors: Cheng‐Peng Niu, Rui Zhang, Zhen‐Wen Zhang, Tie‐Ying Shi, Li‐Ling Chen, Yun‐Peng Wu, Zhi‐Hai Peng, Cheng‐Rong Zhang, Li Zhang, Ru‐Ping Liang, Jian‐Ding Qiu
Institutions: Nanchang University, East China University of Technology
Language: English
Subfield: Electrical and Electronic Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: bronze
OpenAlex ID: W4409647883