Triboelectric nanogenerator (TENG) is a promising technology, which can convert biokinetic energy into electricity and be utilized as self‐powered sensors and power sources for wearable electronics. The existing designs of conventional TENGs require complex fabrication processes and device structures, and they need to be attached on human body for wearable application, which is uncomfortable and may lead to malfunction under intense body moment. Here, a direct current TENG is proposed by utilizing natural human body, basketball, shoes, and ground floor. A unidirectional peak voltage and current output up to 700 V and 23 µA can be generated when a player plays a basketball, which can lighten up an array of 240 LEDs, and charge a 100 µF capacitor to 3.2 V in 1 min. The output of TENG is utilized to identify different movements of a basketball player using machine learning algorithm with an accuracy up to 96.7%. Moreover, the human body enabled direct current TENG (HBDC‐TENG) is used as a self‐powered sensor and an energy harvester for a wireless sensing system, which can collect human motion and environmental information, and transmit them wirelessly. The HBDC‐TENG has a great significance for self‐powered wearable electronics, providing a viable solution for human motion status and ambient environment monitoring.

中文翻译：

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人体电极启用直流摩擦纳米发电机，用于自供电无线人体运动和环境监测

摩擦纳米发电机（TENG）是一项很有前途的技术，它可以将生物动能转化为电能，并用作自供电传感器和可穿戴电子产品的电源。传统TENG的现有设计需要复杂的制造工艺和器件结构，并且它们需要附着在人体上才能进行可穿戴应用，这在强烈的身体力矩下会导致不舒服并且可能导致故障。这里，利用自然人体、篮球、鞋子和地面提出了直流TENG。当球员打篮球时，可以产生高达 700 V 和 23 µA 的单向峰值电压和电流输出，可以点亮 240 个 LED 阵列，并在 1 分钟内将 100 µF 电容器充电至 3.2 V。 TENG 的输出用于通过机器学习算法识别篮球运动员的不同动作，准确率高达 96.7%。此外，人体直流TENG（HBDC-TENG）被用作无线传感系统的自供电传感器和能量采集器，可以收集人体运动和环境信息，并进行无线传输。 HBDC-TENG对于自供电可穿戴电子产品具有重要意义，为人体运动状态和周围环境监测提供了可行的解决方案。