Electrospinning-hot pressing technique for the fabrication of thermal and electrical storage membranes and applications

Electrospinning-hot pressing technique (EHPT) by integrating electrospinning with hot pressing is an efficient and convenient method in the synthesis of nanofibrous composite material with good performance in energy storage. The emerging composite membrane prepared by EHPT which exhibits characteristics of large surface area, controllable morphology, and compact structure, has received tremendous attention. In this paper, we systematically discuss the conduction mechanism of composite membranes in thermal and electrical energy storage and the performance enhancement method based on the fabrication process of EHPT. Simultaneously, the state-of-the-art and applications of composite membranes in these two fields are introduced respectively. Particularly, in the field of thermal energy storage, the membranes obtained by EHPT have longitudinal and transverse nanofibers, which form unique thermal conductivity pathways; besides, the longitudinal and transverse nanofibers also provide sufficient space for the filling of functional materials. electrospinning-hot pressing membranes can be used in thermal management systems and building energy conservation. In the area of electrical energy storage, the composite membranes produced by EHPT improve the electrochemical properties of the separators while enhancing the mechanical and thermal stability. the application of electrospinning-hot pressing membranes on capacitors, lithium-ion batteries (LIBs), fuel cells, sodium-ion batteries (SIBs) and hydrogen-bromine flow batteries (HBFBs) are still needed to be explored. In the future, EHPT is expected to bring new life through its own technological breakthroughs, or then combined with other technologies to produce smarter materials.