Room-temperature Self-healing and Recyclable PDMS Elastomers with Superior Mechanical Properties for Triboelectric Nanogenerators  

作　　者：Shu-Juan Wang Lu Wang Hong-Zhe Su Zhi-Cheng Wu Qiao-Gen Zhang Wei Fan Xin-Li Jing 

机构地区：[1]School of Chemistry,Joint Innovation Center of Thermal Protection Materials,Xi’an Jiaotong University,Xi’an,710049,China [2]School of Electrical Engineering,Xi’an Jiaotong University,Xi’an,710049,China [3]School of Textile Science and Engineering,Xi’an Polytechnic University,Xi’an,710048,China

出　　处：《Chinese Journal of Polymer Science》2024年第10期1566-1577,I0014,共13页高分子科学（英文版）

基　　金：supported by the National Key Research and Development Program of China(No.2023YFB2407100);the National Natural Science Foundation of China(No.52173080)。

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.

关 键 词：POLYDIMETHYLSILOXANE Aromatic disulfide bonds Hydrogen bonds Room temperature self-healing Triboelectric nanogenerator 

分 类 号：TM31[电气工程—电机] TQ334[化学工程—橡胶工业]