Ultra‐Stable Electret Nanogenerator to Scavenge High‐Speed Rotational Energy for Self‐Powered Electronics

An electret nanogenerator (ENG) based on electrostatic induction of an electret film is realized exhibiting an ultra-stable output performance. No output voltage/current decay is found under continuous working conditions of 10 h or intermittent working conditions of 100 days at a rotational speed of 4000 rpm. By utilizing a power management circuit, the ENG can deliver a constant output voltage of 5 V and a pulsed output current of 160 mA, which can provide enough energy for directly powering some small electronics such as a temperature–humidity sensor. As a service to our authors and readers, this journal provides supporting information supplied by the authors. Such materials are peer reviewed and may be re-organized for online delivery, but are not copy-edited or typeset. Technical support issues arising from supporting information (other than missing files) should be addressed to the authors. Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.