Hydrogen-bonded micelle assembly directed conjugated microporous polymers for nanospherical carbon frameworks towards dual-ion capacitors

微型多孔材料 胶束 聚合物 材料科学 共轭微孔聚合物 碳纤维 对偶(语法数字) 离子 共轭体系 化学工程 纳米技术 高分子化学 化学 有机化学 水溶液 复合数 工程类 复合材料 艺术 文学类
作者
Yang Qin,Sanjiv K. Jha,Chengmin Hu,Ziyang Song,Ling Miao,Yumin Chen,Pingxuan Liu,Yaokang Lv,Lihua Gan,Mingxian Liu
出处
期刊:Journal of Colloid and Interface Science [Elsevier BV]
卷期号:675: 1091-1099 被引量:9
标识
DOI:10.1016/j.jcis.2024.07.052
摘要

Well-orchestrated carbon nanostructure with superb stable framework and high surface accessibility is crucial for zinc-ion hybrid capacitors (ZIHCs). Herein, a hydrogen-bonded micelle self-assembly strategy is proposed for morphology-controllable synthesis of conjugated microporous polymers (CMPs) derived carbon to boost zinc ion storage capability. In the strategy, F127 micellar assembly through intermolecular hydrogen bonds serves as structure-directed agent, directing CMPs' oligomers grow into nanospherical assembly. The nanospherical carbon frameworks derived from CMPs (CNS-2) have shown maximized surface accessibility due to their plentiful tunable porosity and hierarchical porous structure with abundant mesoporous interconnected channels, and superb stability originating from CMPs' robust framework, thus the CNS-2-based ZIHCs exhibit ultrahigh energy density of 163 Wh kg−1 and ultralong lifespan with 93 % capacity retention after 200, 000 cycles at 20 A g−1. Charged ion storage efficiency also lies in dual-ion alternate uptake of Zn2+ and CF3SO3− as well as chemical redox of Zn2+ with carbonyl/pyridine motifs forming O–Zn–N bonds. Maximized surface accessibility and dual-ion storage mechanism ensure excellent electrochemical performance. Thus, the hydrogen-bond-guide micelle self-assembly strategy has provided a facile way to design nanoarchitectures of CMPs derived carbon for advanced cathodes of ZIHCs.
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