Fully wood-based high-performance triboelectric nanogenerator for smart home
摘要
The smart home, constructed with plenty of electronic devices, has received great attention in human life. In this system, triboelectric nanogenerator (TENG) plays an important role due to its simple preparation, high output voltage, and high energy conversion efficiency. However, the extensive usage of nondegradable polymers as the friction layer inevitably causes environmental issue, and also the conventional conductive electrode using metal may result in the accommodation of metal. Herein, a fully wood-based single electrode triboelectric nanogenerator (FW-TENG) is proposed for the first time, in which a porous structure is generated with the delignification process and the wood-based friction layer exhibited good flexibility. In addition, the FW-TENG with wood-derived carbon as the electrode delivered high output voltage, current density, and power density of 208 V (580 kV m−2), 167 mA m−2, and 4.86 W m−2, outperforming other TENGs. Furthermore, the triboelectric nanogenerator could generate different electrical signals via contacting different objects and harvest energy from various human motions. Simultaneously, the application of the FW-TENG for smart home is also demonstrated. This study may provide a green and facile strategy for fabricating the eco-friendly triboelectric nanogenerator with excellent output electrical performance and degradability.