A Review of Harvesting Energy from Human Body Using Piezoelectric Nanogenerator and its Application

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2021
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This study demonstrates the use of piezoelectric nanogenerators in order to harvest energy from the human body. In recent years, there has been an increasing demand for low-power and portable-energy sources because of the growth and common use of portable electronic devices. Energy harvesting raises the possibility of self-powered systems which are fully autonomous that don't need human interference for energy replenishment. Mechanical energies are an attractive ambient energy source among the ambient energy sources such as solar energy, heat, and wind because they are readily available and suitable for the use of piezoelectric materials, which can transform mechanical strain energy into electrical energy. Humans produce significant amounts of mechanical energy doing everyday tasks which is usually dissipated into the atmosphere. Piezoelectric nanogenerator can convert the mechanical energy into electrical energy. The idea of absorbing the energy surrounding an electronic system and transforming it into usable electrical energy that could extend the life of the power source or provide an unending supply of energy has piqued the interest of many researchers, and power harvesting has received a lot of attention. The usage of piezoelectric materials is one approach of getting the energy surrounding a system. The capacity to exchange electrical and mechanical energy is unique to piezoelectric materials. These findings also show that this efficient, lightweight, and low-cost energy harvester may be used as a power source for microelectronics in wearable devices. Piezoelectric energy harvesting has grown significantly since 2006. This paper updates the authors previous review paper by highlighting significant advancements in the field of piezoelectric energy harvesting over the last decade.
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Electrical and Computer Engineering
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North South University
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