Real‐Time Smartphone Charging from Recycled Aluminum Foil–Based Electromagnetic Energy Harvester

Abstract

Harvesting energy from waste resources shows significant potential in low‐power electronics, self‐powered devices, and waste‐energy management. Herein, a possible mechanism is demonstrated to harvest waste electromagnetic (EM) energy produced by the induction heater where recycled aluminum foil is utilized as an energy‐harvester unit. As a consequence, ≈5.34 μW of harvested power is manifested under the operating condition of the induction heater. In this connection, a demonstration of the real‐time calculator operation, 26 blue light‐emitting diode lighting, and smartphone battery charging are presented. It indicates an excellent opportunity to harvest the abundantly available waste EM energy using the recycled and widely used food‐packaging Al foil. Thus, it is expected that the waste EM energy can be utilized to power up consumer electronic appliances.

A Spin-Charge-Regulated Self-Powered Nanogenerator for Simultaneous Pyro-Magneto-Electric Energy Harvesting

“…The thermal energy harvester slows at night or during low-temperature fluctuations, and the ME energy harvester is of no use in the absence of stray magnetic fields. To overcome these technicalities, a multiple-energy harvesting technology is proposed as a viable solution to the sustainable energy supply. , It enables the generation of consistent and efficient electric energy at multiple energy inputs at itinerant transductions. − In this series, multisource hybrid energy harvesters with multiple energy conversion materials and conformers are being developed to optimize the output power when multiple energy sources are available, either concurrently or alternately. − …”

“…4,9−13 It has emerged as a critical technology for remedying the power management challenges associated with low-power and energyefficient devices. 6,7 It is an efficient and the most clean way of producing electricity using a sustainable ferroelectric (FE) or a magnetoelectric (ME) generator. No pollutant is released while running such devices.…”

“…Electric energy is widely used from fossil fuels and batteries. , Despite dwindling supplies, fossil fuel has a limit in that it causes pollution at burns, which limits energy supply to remote sensors, implantable medical devices, and Internet of Things (IoT) devices. − As a result, the search for alternative clean energies is demanded in aspects of both fundamental understanding of their remedies and technologies. Energy harvesting, also called “energy scavenging”, has an open scope of recovering green energy from energy waste. − Thus, harvesting energy from wastes such as solar, thermal, wind, vibration, and magnetic fields is a thrust era of outsourcing evergreen energy for uses in modern electronics and wireless sensor networks. ,− It has emerged as a critical technology for remedying the power management challenges associated with low-power and energy-efficient devices. , It is an efficient and the most clean way of producing electricity using a sustainable ferroelectric (FE) or a magnetoelectric (ME) generator. No pollutant is released while running such devices.…”