An Ultra‑Durable Windmill‑Like Hybrid Nanogenerator for Steady and Efficient Harvesting of Low‑Speed Wind Energy  

作　　者：Ying Zhang Qixuan Zeng Yan Wu Jun Wu Songlei Yuan Dujuan Tan Chenguo Hu Xue Wang 

机构地区：[1]Department of Applied Physics,State Key Laboratory of Power Transmission Equipment and System Security and New Technology,Chongqing University,Chongqing 400044,People’s Republic of China [2]Chongqing Key Laboratory of Soft Condensed Matter Physics and Smart Materials,Chongqing University,Chongqing 400044,People’s Republic of China

出　　处：《Nano-Micro Letters》2020年第12期228-238,共11页纳微快报（英文版）

基　　金：The authors gratefully acknowledge the financial support from the Natural Science Foundation of Chongqing(Grant No.cstc2017jcyjAX0307);the Fundamental Research Funds for the Central Universities(Grant Nos.CYFH201821,2020CDCGJ005,2018CDQYWL0046,2019CDXZWL001);the National Natural Science Foundation of China(Grant No.51402112).

摘　　要：Wind energy is one of the most promising and renewable energy sources;however,owing to the limitations of device structures,collecting low-speed wind energy by triboelectric nanogenerators(TENGs)is still a huge challenge.To solve this problem,an ultra-durable and highly efficient windmill-like hybrid nanogenerator(W-HNG)is developed.Herein,the W-HNG composes coupled TENG and electromagnetic generator(EMG)and adopts a rotational contact-separation mode.This unique design efficiently avoids the wear of friction materials and ensures a prolonged service life.Moreover,the generator group is separated from the wind-driven part,which successfully prevents rotation resistance induced by the friction between rotor and stator in the conventional structures,and realizes low-speed wind energy harvesting.Additionally,the output characteristics of TENG can be complementary to the different performance advantages of EMG to achieve a satisfactory power production.The device is successfully driven when the wind speed is 1.8 m s−1,and the output power of TENG and EMG can achieve 0.95 and 3.7 mW,respectively.After power management,the W-HNG has been successfully applied as a power source for electronic devices.This work provides a simple,reliable,and durable device for improved performance toward large-scale low-speed breeze energy harvesting.

关 键 词：Triboelectric nanogenerator Windmill-like structure Rotational contact-separation mode Low-speed wind energy harvesting 

分 类 号：TB383.1[一般工业技术—材料科学与工程] TM31[电气工程—电机]