Advances in Triboelectric Nanogenerators With Rotating Structure

ABSTRACT As a type of emerging electro‐mechanical conversion technology, triboelectric nanogenerators (TENGs) were widely applied in high‐entropy energy harvesting, Internet of Things sensing, and biomedical fields due to the characteristics of lightweight, cheap, and high voltage. Among them, the rotating TENG has been extensively researched for its advantages, such as high‐precision electrical signals, high electro‐mechanical conversion efficiency, and effective output power. In this paper, the working mechanisms of four different rotating TENG modes were introduced in detail. Subsequently, a large amount of research works on the strengthening performance of rotating TENGs were comprehensively introduced and summarized by three gradient classifications. In addition, in view of the many applications of rotating TENGs, they were also systematically divided and generalized into three dimensions. Finally, the problems as well as challenges faced by the current rotating TENG research in the above 16 specific research directions were deeply analyzed, and the possible development directions and the solutions to the above problems were reasonably prospected in the next years. This review hopes to effectively promote the progress of rotating TENG on the road to commercialization.