Emerging Pyroelectric Nanogenerators to Convert Thermal Energy into Electrical Energy. Issue 9 (4th November 2019)

• Record Type: Journal Article
• Authors: Ryu, Hanjun; Kim, Sang‐Woo
• Is Part Of: Small. Volume 17:Issue 9(2021)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2019-11-04
• Subjects: ferroelectric polymers -- flexibility -- nanogenerators -- pyroelectric ceramics -- pyroelectric effects; Nanotechnology -- Periodicals; Nanoparticles -- Periodicals; Microtechnology -- Periodicals; 620.5
• DOI: 10.1002/smll.201903469
• Languages: English
• ISSNs: 1613-6810

Abstract

Abstract: Pyroelectric energy harvesting systems have recently received substantial attention for their potential applications as power generators. In particular, the pyroelectric effect, which converts thermal energy into electrical energy, has been utilized as an infrared (IR) sensor, but upcoming sensor technology that requires a miniscule amount of power is able to utilize pyroelectric nanogenerators (PyNGs) as a power source. Herein, an overview of the progress in the development of PyNGs for an energy harvesting system that uses environmental or artificial energies such as the sun, body heat, and heaters, is provided. It begins with a brief introduction of the pyroelectric effect, and various polymer and ceramic materials based PyNGs are reviewed in detail. Various approaches for developing polymer‐based PyNGs and various ceramic materials–based PyNGs are summarized in particular. Finally, challenges and perspectives regarding the PyNGs are described. Abstract : Converting thermal energy into electrical energy using pyroelectric nanogenerators is a promising technology to utilize abundant thermal energy. Herein, a variety of polymers and ceramic‐based flexible, stretchable, and hybrid pyroelectric nanogenerators are reviewed. The working mechanism of the pyroelectric nanogenerators is provided, and a perspective for high performance pyroelectric nanogenerators is presented.