Charge Dispersion Strategy for High‐Performance and Rain‐Proof Triboelectric Nanogenerator

Author:

Sun Qizeng12,Ren Guozhang12,He Shunhao2,Tang Biao1,Li Yijia1,Wei Yuewen1,Shi Xuewen1,Tan Shenxing1,Yan Ren1,Wang Kaili2,Yu Liuyingzi2,Wang Junjie2,Gao Kun2,Zhu Chengcheng2,Song Yaxin2,Gong Zhongyan2,Lu Gang2ORCID,Huang Wei12ORCID,Yu Hai‐Dong1ORCID

Affiliation:

1. Frontiers Science Center for Flexible Electronics Xi'an Institute of Flexible Electronics Xi'an Institute of Biomedical Materials & Engineering Northwestern Polytechnical University 127 West Youyi Road Xi'an 710072 P. R. China

2. School of Flexible Electronics (Future Technologies) Institute of Advanced Materials Key Laboratory of Flexible Electronics Nanjing Tech University 30 South Puzhu Road Nanjing 211816 P. R. China

Abstract

AbstractTriboelectric nanogenerator (TENG) is becoming a sustainable and renewable way of energy harvesting and self‐powered sensing because of low cost, simple structure, and high efficiency. However, the output current of existing TENGs is still low. It is proposed that the output current of TENGs can be dramatically improved if the triboelectric charges can distribute inside the triboelectric layers. Herein, a novel single‐electrode conductive network‐based TENG (CN‐TENG) is developed by introducing a conductive network of multiwalled carbon nanotubes in dielectric triboelectric layer of thermoplastic polyurethane (TPU). In this CN‐TENG, the contact electrification‐induced charges distribute on both the surface and interior of the dielectric TPU layer. Thus, the short‐circuit current of CN‐TENG improves for 100‐fold, compared with that of traditional dielectric TENG. In addition, this CN‐TENG, even without packing, can work stably in high‐humidity environments and even in the rain, which is another main challenge for conventional TENGs due to charge leakage. Further, this CN‐TENG is applied for the first time, to successfully distinguish conductive and dielectric materials. This work provides a new and effective strategy to fabricate TENGs with high output current and humidity‐resistivity, greatly expanding their practical applications in energy harvesting, movement sensing, human–machine interaction, and so on.

Funder

National Natural Science Foundation of China

National Key Research and Development Program of China

Publisher

Wiley

Subject

Mechanical Engineering,Mechanics of Materials,General Materials Science

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