Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/144035
Title: Two-dimensional (2D) covalent organic framework as efficient cathode for binder-free lithium-ion battery
Authors: Yao, Chang-Jiang
Wu, Zhenzhen
Xie, Jian
Yu, Fei
Guo, Wei
Xu, Zhichuan Jason
Li, Dong-Sheng
Zhang, Shanqing
Zhang, Qichun
Keywords: Engineering::Materials
Engineering::Chemical engineering
Issue Date: 2020
Source: Yao, C.-J., Wu, Z., Xie, J., Yu, F., Guo, W., Xu, Z. J., ... Zhang, Q. (2020). Two-dimensional (2D) covalent organic framework as efficient cathode for binder-free lithium-ion battery. ChemSusChem, 13(9), 2457-2463. doi:10.1002/cssc.201903007
Project: AcRF Tier 1 RG 111/17
AcRF Tier 1 RG 2/17
AcRF Tier 1 RG 114/16
AcRF Tier 1 RG 8/16
AcRF Tier 2 MOE 2017‐T2‐1‐021
AcRF Tier 2 MOE 2018‐T2‐1‐070
Australian Research Council (ARC) Discovery Project DP160102627
Australian Research Council (ARC) Discovery Project DP1701048343
Journal: ChemSusChem
Abstract: Searching new organic cathode materials to address the issues of poor cycle stability and low capacity in lithium ion batteries (LIBs) is very important and highly desirable. In this research, a 2D boroxine-linked chemically-active pyrene-4,5,9,10-tetraone (PTO) covalent organic framework (2D PPTODB COFs) was synthesized as an organic cathode material with remarkable electrochemical properties, including high electrochemical activity (four redox electrons), safe oxidation potential window (between 2.3 and 3.08 V vs. Li/Li+ ), superb structural/chemical stability, and strong adhesiveness. A binder-free cathode was obtained by mixing 70 wt % PPTODB and 30 wt % carbon nanotubes (CNTs) as a conductive additive. Promoted by the fast kinetics of electrons/ions, high electrochemical activity, and effective π-π interaction between PPTODB and CNTs, LIBs with the as-prepared cathode exhibited excellent electrochemical performance: a high specific capacity of 198 mAh g-1 , a superb rate ability (the capacity at 1000 mA g-1 can reach 76 % of the corresponding value at 100 mA g-1 ), and a stable coulombic efficiency (≈99.6 % at the 150th cycle). This work suggests that the concept of binder-free 2D electroactive materials could be a promising strategy to approach energy storage with high energy density.
URI: https://hdl.handle.net/10356/144035
ISSN: 1864-564X
DOI: 10.1002/cssc.201903007
Rights: This is the accepted version of the following article: Yao, C.-J., Wu, Z., Xie, J., Yu, F., Guo, W., Xu, Z. J., ... Zhang, Q. (2020). Two-dimensional (2D) covalent organic framework as efficient cathode for binder-free lithium-ion battery. ChemSusChem, 13(9), 2457-2463. doi:10.1002/cssc.201903007, which has been published in final form at 10.1002/cssc.201903007. This article may be used for non-commercial purposes in accordance with the Wiley Self-Archiving Policy [https://authorservices.wiley.com/authorresources/Journal-Authors/licensing/self-archiving.html].
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:MSE Journal Articles

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