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Solvothermal synthesis of triphenylamine-based covalent organic framework nanofibers with excellent cycle stability for supercapacitor electrodes
Journal of Applied Polymer Science ( IF 2.7 ) Pub Date : 2021-08-05 , DOI: 10.1002/app.51510 Shanxin Xiong 1 , Jian Liu 1 , Yuancheng Wang 1 , Xiaoqin Wang 1 , Jia Chu 1 , Runlan Zhang 1 , Ming Gong 1 , Bohua Wu 1
Journal of Applied Polymer Science ( IF 2.7 ) Pub Date : 2021-08-05 , DOI: 10.1002/app.51510 Shanxin Xiong 1 , Jian Liu 1 , Yuancheng Wang 1 , Xiaoqin Wang 1 , Jia Chu 1 , Runlan Zhang 1 , Ming Gong 1 , Bohua Wu 1
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Covalent organic framework (COF) is a new class of porous materials used in energy storage devices. By solvothermal method, the triphenylamine-based covalent organic framework was synthesized using Schiff base coupling reaction between tris(4-aminophenyl) amine (TAPA) and tris(4-formylphenyl) amine. The regular pore structure of TPA-COFs not only exposes more active sites of triphenylamine structure to electrolyte solution during the charge–discharge process, but also accelerates the transport of ions in the active layer. At the same time, the π-electron conjugated system and the interlayer π-π stacking effect effectively promote the conduct of electrons in the two-dimensional and three-dimensional directions of COFs materials, which improves the electrochemical performance of the materials. TPA-COFs show a higher specific capacitance of 263.1 F/g at 0.1 A/g. At the same time, TPA-COFs materials exhibit a high specific surface area of 398.59 m2/g. After 5000 cycles of charge–discharge, the capacitance retention rate of TPA-COFs is 111%, showing excellent cycle stability.
中文翻译：
具有优异循环稳定性的三苯胺基共价有机骨架纳米纤维的溶剂热合成超级电容器电极
共价有机骨架（COF）是一类用于储能装置的新型多孔材料。通过溶剂热法，利用三（4-氨基苯基）胺（TAPA）和三（4-甲酰基苯基）胺之间的席夫碱偶联反应合成了基于三苯胺的共价有机骨架。TPA-COFs的规则孔结构不仅在充放电过程中将更多的三苯胺结构活性位点暴露在电解液中，而且加速了活性层中离子的传输。同时，π-电子共轭体系和层间π-π堆积效应有效促进了COFs材料二维和三维方向的电子传导，提高了材料的电化学性能。TPA-COF 的比电容更高，为 263。1 F/g 在 0.1 A/g。同时，TPA-COFs材料表现出398.59 m的高比表面积2 /克。经过5000次充放电循环后，TPA-COFs的电容保持率为111%，表现出优异的循环稳定性。
更新日期：2021-10-06
中文翻译：
具有优异循环稳定性的三苯胺基共价有机骨架纳米纤维的溶剂热合成超级电容器电极
共价有机骨架（COF）是一类用于储能装置的新型多孔材料。通过溶剂热法，利用三（4-氨基苯基）胺（TAPA）和三（4-甲酰基苯基）胺之间的席夫碱偶联反应合成了基于三苯胺的共价有机骨架。TPA-COFs的规则孔结构不仅在充放电过程中将更多的三苯胺结构活性位点暴露在电解液中，而且加速了活性层中离子的传输。同时，π-电子共轭体系和层间π-π堆积效应有效促进了COFs材料二维和三维方向的电子传导，提高了材料的电化学性能。TPA-COF 的比电容更高，为 263。1 F/g 在 0.1 A/g。同时，TPA-COFs材料表现出398.59 m的高比表面积2 /克。经过5000次充放电循环后，TPA-COFs的电容保持率为111%，表现出优异的循环稳定性。
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