High-strength nacre-like composite films based on pre-polymerised polydopamine and polyethyleneimine cross-linked MXene layers via multi-bonding interactions

被引：13

作者：

Wang, Jianhua ^{[1
]}

Jiang, Degang ^{[2
]}

Zhang, Yi ^{[2
]}

Du, Yiqi ^{[1
]}

Sun, Yuesheng ^{[1
]}

Jiang, Mingyuan ^{[1
]}

Xu, Jiangtao ^{[1
]}

Liu, Jingquan ^{[1
]}

机构：

[1] Qingdao Univ, Inst Graphene Appl Technol Innovat, Coll Mat Sci & Engn, Ningxia Rd 308, Qingdao 266071, Peoples R China

[2] Deakin Univ, Inst Frontier Mat, Geelong Waurn Ponds Campus, Geelong, Vic 3216, Australia

来源：

JOURNAL OF COLLOID AND INTERFACE SCIENCE | 2024年 / 653卷

基金：

中国国家自然科学基金; 澳大利亚研究理事会;

关键词：

Polydopamine; Polyethyleneimine; Multi-bonding; MXene film; Flexible energy storage; EFFICIENT; STRATEGY;

D O I：

10.1016/j.jcis.2023.09.074

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Demands for high-strength flexible electrodes have significantly increased across various fields, especially in wearable electronics. Inspired by the strong integrated layered structure of the natural nacre via multi-bonding interactions, we report the fabrication of the strong integrated nacre-like composite films based on pre-polymerised polydopamine and polyethyleneimine cross-linked MXene layers (p-DEM), achieving the synergic effect of hydrogen bonding, covalent bonding and electrostatic interactions. As a result, a high-level tensile strength of similar to 302 MPa, 10.8 times higher than that of the plain MXene film, is obtained for the prepared p-DE0.5M composite film. Meanwhile, the composite film also delivers superior energy storage (similar to 1218F cm(-3) at 5 mV s(-1)) and rate performances (capacitance retention of 81.3% at 1000 mV s(-1)). To demonstrate the practical application of the composite films, a symmetrical supercapacitor based on p-DE0.5M electrodes is assembled, which shows stable energy storage performances under different deformation states such as bending angles at 0, 60, 90 and 180 degrees, or withstand repeated bending times (1000 cycles). This type of multi-bonding interactions induced strong integrated MXene assembly may promote the wide applications of MXene-based films in flexible electronics, artificial intelligence, and tissue engineering, to name a few.

引用

页码：229 / 237

页数：9