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. 2019 Apr 5;5(4):eaav6437. doi: 10.1126/sciadv.aav6437

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Copyright © 2019 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution NonCommercial License 4.0 (CC BY-NC).

This is an open-access article distributed under the terms of the Creative Commons Attribution-NonCommercial license, which permits use, distribution, and reproduction in any medium, so long as the resultant use is not for commercial advantage and provided the original work is properly cited.

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Fig. 1 — (A) (i) Phenomenon of the triboelectrification effect and electrostatic breakdown (lightning) in nature. (ii) Working mechanism of a conventional TENG. (B) A schematic illustration of the sliding mode DC-TENG. (C) Working mechanism of the sliding mode DC-TENG in full cyclic motion. (D) Equivalent circuit model of the DC-TENG. (E) Constant current output of the DC-TENG.