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.)
In situ filling of a robust carbon sponge with hydrogel electrolyte: a type of omni-healable electrode for flexible supercapacitors
Journal of Materials Chemistry A ( IF 10.7 ) Pub Date : 2020-04-02 , DOI: 10.1039/d0ta01764g Liaoyuan Xia 1, 2, 3, 4 , Le Huang 1, 2, 3, 4 , Yan Qing 1, 2, 3, 4 , Xueqin Zhang 1, 2, 3, 4 , Yiqiang Wu 1, 2, 3, 4 , Wenping Jiang 1, 2, 3, 4 , Xihong Lu 4, 5, 6, 7, 8
Journal of Materials Chemistry A ( IF 10.7 ) Pub Date : 2020-04-02 , DOI: 10.1039/d0ta01764g Liaoyuan Xia 1, 2, 3, 4 , Le Huang 1, 2, 3, 4 , Yan Qing 1, 2, 3, 4 , Xueqin Zhang 1, 2, 3, 4 , Yiqiang Wu 1, 2, 3, 4 , Wenping Jiang 1, 2, 3, 4 , Xihong Lu 4, 5, 6, 7, 8
Affiliation
|
A sandwich-type supercapacitor consisting of self-healing layers and electrode layers can easily delaminate during deformation, thereby seriously affecting its reliability. In this work, a type of omni-healable electrode (denoted as CS@PANa–Fe3+–LiCl) is reported, which completely integrates a three-dimensional (3D) electrode material, a self-healing hydrogel and an electrolyte. Consequently, the ease of delamination and the large contact resistance due to the sandwich-type structure can be effectively overcome. Herein, the 3D porous carbon sponge (CS) serves both as an electroactive material and a carrier for the Fe3+-crosslinked sodium polyacrylate–LiCl (denoted as PANa–Fe3+–LiCl) hydrogel electrolyte. Combining the high electrical conductivity and good capacitance of the CS with the high ionic conductivity and excellent self-healability of the PANa–Fe3+–LiCl hydrogel electrolyte, the omnidirectionally integrated electrode exhibits good electrochemical and mechanical properties as well as excellent self-healing characteristics; furthermore, its capacity retention rate remains high (91.6%) even after five cutting/healing cycles. The as-fabricated CS@PA-SC device exhibits full self-healability, high energy density, good cycling stability, and integration characteristics. This investigation offers a facile and versatile strategy to integrate omni-healable electrodes that can be utilized to construct completely self-healable supercapacitors for wearable electronics.
中文翻译：
用水凝胶电解质原位填充坚固的碳海绵：一种用于全能型超级电容器的全愈合电极
由自愈层和电极层组成的三明治型超级电容器在变形过程中容易分层，从而严重影响其可靠性。在这项工作中，报告了一种全能修复的电极（表示为CS @ PANa–Fe 3+ –LiCl），它完全集成了三维（3D）电极材料，自修复水凝胶和电解质。因此，可以有效地克服由于夹心式结构引起的分层的容易性和大的接触电阻。在此，3D多孔碳海绵（CS）既用作电活性材料，又用作Fe 3+交联聚丙烯酸钠LiCl（表示为PANa–Fe 3+）的载体–LiCl）水凝胶电解质。全向集成电极将CS的高电导率和良好的电容与PANa–Fe 3+ –LiCl水凝胶电解质的高离子电导率和出色的自修复性相结合，具有良好的电化学和机械性能以及出色的自修复性特性 此外，即使经过五个切割/修复循环，其容量保持率仍然很高（91.6％）。组装后的CS @ PA-SC器件具有完全的自愈性，高能量密度，良好的循环稳定性和集成特性。这项研究提供了一种灵活且通用的策略来集成全能修复的电极，该电极可用于构造可穿戴电子产品的完全自修复的超级电容器。
更新日期：2020-04-02
中文翻译：
用水凝胶电解质原位填充坚固的碳海绵：一种用于全能型超级电容器的全愈合电极
由自愈层和电极层组成的三明治型超级电容器在变形过程中容易分层，从而严重影响其可靠性。在这项工作中，报告了一种全能修复的电极（表示为CS @ PANa–Fe 3+ –LiCl），它完全集成了三维（3D）电极材料，自修复水凝胶和电解质。因此，可以有效地克服由于夹心式结构引起的分层的容易性和大的接触电阻。在此，3D多孔碳海绵（CS）既用作电活性材料，又用作Fe 3+交联聚丙烯酸钠LiCl（表示为PANa–Fe 3+）的载体–LiCl）水凝胶电解质。全向集成电极将CS的高电导率和良好的电容与PANa–Fe 3+ –LiCl水凝胶电解质的高离子电导率和出色的自修复性相结合，具有良好的电化学和机械性能以及出色的自修复性特性 此外，即使经过五个切割/修复循环，其容量保持率仍然很高（91.6％）。组装后的CS @ PA-SC器件具有完全的自愈性，高能量密度，良好的循环稳定性和集成特性。这项研究提供了一种灵活且通用的策略来集成全能修复的电极，该电极可用于构造可穿戴电子产品的完全自修复的超级电容器。
京公网安备 11010802027423号