The authors are grateful for many discus-sions about theoretical calculation of triboelectric generator with Prof. Tao Jiang from Beijing Institute of Nanoenergy and Nanosys-tems, Chinese Academy of Sciences, China. We also thank Prof. Bin Ding, Donghua University, China, for his great support for electric Measurements and Xue Chen, School of Entrepreneur-ship and Management, ShanghaiTech University, China, for draw-ings in Fig. 1. Mechanical tests were carried out at the Analytical Instrumentation Center (AIC) of School of Physical Science and Technology, ShanghaiTech University. SEM characterization was performed at the Center for High-resolution Electron Microscopy (C?EM) at the School of Physical Science and Technology (SPST), ShanghaiTech University. This work was supported by the National Natural Science Foundation of China (No. 51973116, U1832109, 21935002), Shanghai Pujiang Program (18PJ1408600), the starting grant of ShanghaiTech University and Shanghai Sailing Program (17YF1411500). S. Ling and J. Ren designed the study, analyzed the results, and wrote the manuscript. C. Ye performed the experi-ments and analyzed the data. S. Dong analyzed the data and per-formed simulations and theoretical calculation. （AIC）