▎ 摘　　要

Graphene-based flexible electronics, particularly those with self-powered ability and stretchability, are greatly promising candidates in the applications of portable and wearable devices. However, complicated deformation of human body and harsh environment inevitably leads to the degradation of conductivity of wearable electronics due to the intrinsic brittleness and crack sensitivity of graphene. Herein, a metamaterial-inspired stretchable and stable conductive network fabricated by 3D printing polyether-ether-ketone (PEEK) and double-side laser scribing graphene (LSG) techniques is demonstrated, which is called LSGCN. The double-side LSG covers the outer surfaces of printed PEEK filaments and forms a special core-shell structure, and its conductivity is 2.72 times of traditional flat graphene. Moreover, the parametric design of LSGCN can increase the stretchability of the structure from 20% to 118%, while ensuring that the change rate of resistance is limited to 1.06 within the 60% strain range. Based on the triboelectric effect, we also demonstrate LSGCN-based self-powered devices, including wearable smart belts and human-computer interaction gloves. Particularly, the LSGCN glove integrates 21 interactive channels, and it can work as the input equipment to control the simulated calculator, display the slides and even play the 3D games. This hybrid-fabricating method of LSGCN provides a novel strategy to fabricate stretch-stable conductive structures for applications in bio-energy harvesting and self-powered sensing devices, which opens up a new avenue for the future Internet of Things.