Heterogeneous self-healing assembly of MXene and graphene oxide enables producing free-standing and self-reparable soft electronics and robots

• 作者: Jia-Nan Ma Yong-Lai Zhang Yu-Qing Liu Dong-Dong Han Jiang-Wei Mao Jia-Rui Zhang Wu-Chao Zhao Hong-Bo Sun
• 来源期刊: 科学通报（英文版）
• 年，卷（期）: 2022,（5）
• 所属期刊栏目: ARTICLES
• 页码范围: 501-511
• 页数: 11页
• 语种: 英文

摘要

Self-healing materials (SHMs) with unique mechanical and electronic properties are promising for self-reparable electronics and robots.However,the self-healing ability of emerging two-dimensional(2D) materials,for instance,MXenes,has not been systematically investigated,which limits their appli-cations in self-healing electronics.Herein,we report the homogeneous self-healing assembly (homo-SHA) of MXene and the heterogeneous self-healing assembly (hetero-SHA) of MXene and graphene oxide(GO) under moisture treatments.The self-healing mechanism has been attributed to the hydration induced interlayer swelling of MXene and GO and the recombination of hydrogen bond networks after water desorption.The multiform hetero-SHA of MXene and GO not only enables facile fabrication of free-standing soft electronics and robots,but also endows the resultant devices with damage-healing properties.As proof-of-concept demonstrations,free-standing soft electronic devices including a generator,a humidity sensor,a pressure sensor,and several robotic devices have been fabricated.The hetero-SHA of MXene and GO is simple yet effective,and it may pioneer a new avenue to develop minia-ture soft electronics and robots based on 2D materials.