From Triboelectric Nanogenerator to Hybrid Energy Harvesters: A Review on the Integration Strategy toward High Efficiency and Multifunctionality

The rapid development of smart devices and electronic products puts forward higher requirements for power supply components. As a promising solution, hybrid energy harvesters that are based on triboelectric nanogenerator (HEHTNG) show advantages both high harvesting efficiency multifunctionality. Aiming to systematically elaborate the latest research progress HEHTNG, this review starts by introducing its working principle with focus combination nanogenerators various other harvesters, such as piezoelectric nanogenerators, thermoelectric/pyroelectric solar cells, electromagnetic nanogenerators. While performance improvement integration strategies HEHTNG toward environmental emphasized, applications HEHTNGs multifunctional sensors in human health detection also illustrated. Finally, we discuss main challenges prospects HEHTNGs, hoping work can provide clear direction future intelligent systems Internet Things.