Application of different fiber structures and arrangements by electrospinning in triboelectric nanogenerators

In recent years, nanogenerators (NGs) have attracted wide attention in the energy field, among which triboelectric nanogenerators (TENGs) have shown superior performance. Multiple reports of electrospinning (ES)−based TENGs have been reported, but there is a lack of deep analysis of the designing method from microstructure, limiting the creative of new electrospinning−based TENGs. Most TENGs use polymer materials to achieve corresponding design, which requires structural design of polymer materials. The existing polymer molding design methods include macroscopic molding methods, such as injection, compression, extrusion, calendering, etc., combined with liquid−solid changes such as soluting and melting; it also includes micro−nano molding technology, such as melt−blown method, coagulation bath method, ES method and nanoimprint method. In fact, ES technology has good controllability of thickness dimension and rich means of nano−scale structure regulation. At present, these characteristics have not been reviewed. Therefore, in this paper, we combine recent reports with some microstructure regulation functions of ES to establish a more general TENGs design method. Based on the rich microstructure research results in the field of ES, much more new types of TENGs can be designed in the future.