Abstract
Energy collection ways using solar energy, wave, wind, or mechanical energy have attracted widespread attention for small self-powered electronic devices with low power consumption, such as sensors, wearable devices, electronic skin, and implantable devices. Among them, triboelectric nanogenerator (TENG) operated by coupling effect of triboelectrification and electrostatic induction has gradually gained prominence due to its advantages such as low cost, lightweight, high degree of freedom in material selection, large power, and high applicability. The device with a single energy exchange mechanism is limited by its conversion efficiency and work environment and cannot achieve the maximum conversion of energy. Thus, this article reviews the research status of different types of hybrid generators based on TENG in recent years. Hybrid energy generators will improve the output performance though the integration of different energy exchange methods, which have an excellent application prospect. From the perspective of energy complementation, it can be divided into harvesting mechanical energy by various principles, combining with harvesters of other clean energy, and converting mechanical energy or various energy sources into hydrogen energy. For integrating multitype energy harvesters, mechanism of single device and structural design of integrated units for different application scenarios are summarized. The expanding energy harvesting efficiency of the hybrid TENG makes the scheme of self-charging unit to power intelligent mobile electronic feasible and has practical significance for the development of self-powered sensor network.
Highlights
As a sign of the new era, multifunctional electronic devices are changing the way people perceive the world and improving the efficiency of people’s life [1,2,3]
triboelectric nanogenerator (TENG) has a wide range of applications, such as wearable power supply [25,26,27], motion tracking [28], health monitoring [29, 30], and Human Machine Interface (HMI) [31,32,33]
Zi et al described a relative work of low-frequency mechanical energy garnering based on contact-separation mode TENG and electromagnetic generator (EMG) [50]
Summary
As a sign of the new era, multifunctional electronic devices are changing the way people perceive the world and improving the efficiency of people’s life [1,2,3]. TENG has a wide range of applications, such as wearable power supply [25,26,27], motion tracking [28], health monitoring [29, 30], and Human Machine Interface (HMI) [31,32,33] These energy devices are often not appropriate together attributed to weather conditions, equipment environment, and other factors. Compared with a single type of generator, the hybridized generator has higher output power, higher machine-electric conversion efficiency, and better environmental adaptability [36, 37]. It can solve the power supply problem of some electronic devices that required higher power. The hybrid TENG will provide a stable development foundation for self-charging energy packets and self-powered sensors
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