Post-synthetic Fully π-Conjugated Three-Dimensional Covalent Organic Frameworks for High-Performance Lithium Storage
Renzeng Chen, Jingteng Zhao, Zefang Yu, Minghao Cong, Yuancheng Wang, Mingsen Wang, Guoxing Li, Zhibo Li, Yingjie Zhao
Abstract
A fully π-conjugated nitrogen-rich three-dimensional covalent organic framework (PYTRI-COF-2) containing both pyrazine and triazine units was prepared through a post-synthetic strategy. The imine linkages in the pre-prepared PYTRI-COF-1 were converted into heterocyclic quinoline by the Povarov reaction. The obtained PYTRI-COF-2 displayed high Li-ion storage capacity and excellent cycling stability when it was used as the lithium (Li)-ion battery electrode.
Topics & Concepts
Covalent organic frameworkMaterials scienceConjugated systemCovalent bondLithium (medication)ImineTriazineQuinolinePyrazineIonChemical engineeringCombinatorial chemistryOrganic chemistryPolymer chemistryPolymerCatalysisChemistryMedicineComposite materialEndocrinologyEngineeringCovalent Organic Framework ApplicationsMetal-Organic Frameworks: Synthesis and ApplicationsGraphene research and applications