Biokinetic‐Driven Triboelectric Nanogenerator for Cursorial Energy Harvesting and Constructing Self‐Powered Virtual Grazing System

Abstract Biokinetic energy is a ubiquitous and abundant energy source, but it is seldom utilized for recycling and efficient conversion into electricity. In this work, a non‐invasive biokinetic‐driven triboelectric nanogenerator (Bk‐TENG) inspired by the bell‐shaped structure is proposed. It has unique characteristics that can challenge existing biokinetic energy harvesting technologies. Animal activities with frequencies ranging from 0.25 to 2.0 Hz (such as running, walking, and head swinging) are harvested and converted to electricity. Bk‐TENG delivers a peak power of 32 mW at a load resistance of 500 MΩ and transfers charges of 1.09 µC single cycle at a frequency of 2 Hz. Furthermore, a self‐powered virtual grazing system (SP‐VGS) is successfully developed. This system, where Bk‐TENG serves as the primary power source, integrates four core functions: energy harvesting and storage, sensing, positioning, and communication. These functions enable real‐time monitoring and positioning management of livestock. This work offers a viable method for high‐efficiency biokinetic energy harvesting and demonstrates the application potential of SP‐VGS in unguarded livestock fitness, foraging, and migration.