Energy Harvesting and Storing Materials

NaxSb Alloy-Based Low-Frequency Mechanical Energy Harvesters for Virtual Taste Sensations

“…Mechanical energy can be found everywhere throughout the ambient environment. The current mechanical energy-harvesting methods mainly include electrostatic generation, − electromagnetic induction, − and piezoelectric − and triboelectric effects. − These technologies are commonly able to effectively harvest the mechanical energy at high vibrational frequencies; however, their energy-harvesting efficacy fades dramatically in the low-frequency regimen (≤5 Hz) corresponding to human activities involving body movements, muscle contractions, and blood flow. − To make full use of these ubiquitous and sustainable energy sources, it is necessary to develop some novel harvesting methodologies. In recent years, thanks to the development of high-friction true materials, , friction nanogenerators have enabled the application of new self-powered sensing technologies by relying on the coupling effects of contact charging and electrostatic induction, , and smart flexible wearable devices and implantable medical devices have facilitated the protection of the public’s health. − …”