Wireless Power Transmission Enabled by a Triboelectric Nanogenerator via a Magnetic Interaction

Non‐contact wireless power transmission is considered as an ideal energy supply technology due to its convenience and safety. Herein, a subtle triboelectric nanogenerator (TENG)–based non‐contact wireless energy transmission technique is invented via a dynamic magnetic field media. The electricity is first converted into the magnet's vibration. Through the interaction between a pair of magnets, TENG can then wirelessly receive the vibrational energy driven by an electrically induced magnetic field variation. The working principle and output performance of the designed device are explored by simulations and a series of demonstrations, respectively. By inserting different plates in the magnetic field and adjusting the configuration, the TENG exhibits excellent anti‐interference and desirable output performance, indicating that the energy conversion unit exhibits advantages of high efficiency and adaptability. A superior transmission and output performance of 1.5 μW can be achieved under low frequency and relatively large separation distance, at a load resistance of 80 MΩ. TENGs, which enable wireless energy transmission via magnetic field that can easily light up 12 light‐emitting diode (LED) bulbs and drive an electronic watch, provide a promising and feasible approach to energy conversion and energy supply and serve as an alternative power source for driving portable electronics.