Flexible thermoelectric generators (f-TEGs) are of importance for self-powered, portable, and wearable electronics. The materials’ thermoelectric (TE) performance is one of the factors that affect the conversion efficiency of f-TEGs. Poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) as a kind of conducting polymers has low thermal conductivity and good processability in solution; however, its TE properties are still much lower than those of the inorganic TE materials, which limits its wide applications in f-TEGs. Two-dimensional (2D) inorganic nanosheets (NSs) exfoliated from their corresponding powders are promising filler materials for enhancing the TE properties of PEDOT:PSS. This paper provides a brief review on the research progress of flexible 2D inorganic NS/PEDOT:PSS composite films fabricated by vacuum filtration, drop casting, and spin coating. The challenges, perspectives, and outlooks of flexible 2D inorganic NS/PEDOT:PSS composite films are further discussed.

Facile and ecofriendly loading of micro/nano function-specific substances to create functional materials is a trend being pursued by researchers. However, current micro/nano particles loading approaches are often hindered by issues such as uneven distribution, unsatisfactory stability and complicate procedure. In this work, we present an aqueous phase reshaping method that only utilizes the moisture to fabricate the "bubble particles", which could perfectly cater to the topography of the substrate. The green preparation of bubble particles adopts an absolutely zero-pollution method, realizing the firm loading of particles on the substrate. Integrating the preparation and loading of particles overcomes the traditional complicate process, while the aqueous phase reshaping ensures uniform and firm loading of the "bubble particles" onto the substrate. Our mechanism demonstrates a significant enhancement in the interface relation after aqueous phase reshaping, with a 121-fold increase in contact surface area achieved by reducing the height by 1 μm. Furthermore, we explore for the first time the influence of the nature of the receiving substrate on the interface morphology of particles during electrostatic spraying, which has important guiding significance for the interface relationship of electrostatic spraying and even electrostatic spinning materials. We also screen out the natural antibacterial essential oil linalool as the effective specialized antibacterial agent, which can specifically inhibit the odor-producing Proteus in urine, with an antibacterial rate of up to 100%. Taken together, this simple, ecofriendly method for fabricating functional materials with optimal interface stability appears highly promising for use in various products formed by electrostatic spraying/spinning.