One-pot two-step synthesis of micro- and mesoporous organic fibrils for efficient pseudocapacitors,Journal of Materials Chemistry A

当前位置： X-MOL 学术 › J. Mater. Chem. A › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

One-pot two-step synthesis of micro- and mesoporous organic fibrils for efficient pseudocapacitors
Journal of Materials Chemistry A ( IF 10.7 ) Pub Date : 2022-08-08 , DOI: 10.1039/d2ta03308a
Minwoo Yang ₁ , Woon Ju Song ₁

Affiliation

Porous organic polymers (POPs) have emerged as promising materials for electrochemical devices on account of their diverse functional groups and morphologies. Herein, we describe a one-pot two-step synthesis of redox-active and permeable POPs as uniformly shaped fibrils with homogeneous micropores and hierarchical mesoporous channels. Owing to the high fraction of redox-active groups and porous structure, the active material (PI-Fiber) exhibited a high charge capacity of 83.3 mA h g⁻¹ over 0.5 V even at a current density of 75 A g⁻¹, a coulombic efficiency of over 95%, and stability to endure nearly 10 000 cycles. Additionally, high energy and power densities were observed in a two-electrode cell, indicating that PI-Fiber can be adapted for pseudocapacitive energy storage systems. Therefore, our work illustrates that a novel molecular design, supramolecular assembly, and hierarchical architecture of POPs can aid the development of novel and versatile energy-storage materials.

中文翻译：

用于高效赝电容器的微孔和中孔有机原纤维的一锅两步合成

多孔有机聚合物（POPs）由于其不同的官能团和形态已成为电化学装置的有前途的材料。在这里，我们描述了氧化还原活性和可渗透持久性有机污染物的一锅两步合成，作为具有均匀微孔和分级介孔通道的形状均匀的原纤维。由于高比例的氧化还原活性基团和多孔结构，即使在 75 A g ^{-1的电流密度下，活性材料（PI-Fiber）也表现出 83.3 mA hg}^{-1超过 0.5 V 的高充电容量}，库仑效率超过 95%，稳定性可承受近 10 000 次循环。此外，在双电极电池中观察到高能量和功率密度，表明 PI-Fiber 可适用于赝电容储能系统。因此，我们的工作表明，持久性有机污染物的新型分子设计、超分子组装和分层结构有助于开发新型多功能储能材料。

更新日期：2022-08-08

点击分享查看原文

点击收藏

阅读更多本刊最新论文本刊介绍/投稿指南11