Room-temperature Self-healing and Recyclable PDMS Elastomers with Superior Mechanical Properties for Triboelectric Nanogenerators
作者机构：School of Chemistry Joint Innovation Center of Thermal Protection Materials Xi'an Jiaotong University School of Electrical Engineering Xi'an Jiaotong University School of Textile Science and Engineering Xi'an Polytechnic University
出 版 物：《Chinese Journal of Polymer Science》 (高分子科学(英文版))
年 卷 期：2024年第42卷第10期
页 面：1566-1577页
核心收录：
学科分类：080801[工学-电机与电器] 0808[工学-电气工程] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 0703[理学-化学]
基 金：supported by the National Key Research and Development Program of China (No. 2023YFB2407100) the National Natural Science Foundation of China (No. 52173080)
主 题：Aromatic disulfide bonds Hydrogen bonds Polydimethylsiloxane Room temperature self-healing Triboelectric nanogenerator
摘 要：Polydimethylsiloxane (PDMS) is an electron-withdrawing material that is widely used in triboelectric nanogenerators (TENGs). However, PDMS has poor mechanical properties after curing and is easily damaged when subjected to long-term workloads. Thus, the long-term stable operation of TENGs under mechanical deformation cannot be guaranteed. In this work, multiple hydrogen bonds and aromatic disulfide bonds were introduced into PDMS elastomers. These elastomers exhibited high toughness (a tensile strength of 1.91 MPa and an elongation at break of 340%), good recyclability, and room-temperature self-healing properties (healing efficiency of 96.4%in 24 h). Recyclable sandwich-like triboelectric nanogenerators with excellent electrical output performance (13.5 V) and room-temperature self-healing performance (24 h, 98% recovery of self-generating performance) were prepared by utilizing the hydrogen bonding between the PDMS elastomer and MXene. The work reported herein offers theoretical guidance and a compelling strategy for developing high-performance TENG negative friction layers.
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