Preparation Of PAN/PEO-Based Gel Polymer Electrolyte

The PAN/PEO-based polymer gel electrolyte were studied in this paper, four aspects of the PEO concentration, electron beam radiation dose, heat treatment and the spinning process of PAN/PEO-based polymer gel electrolyte were studied, prepared with good mechanical and electrochemical properties of the polymer gel electrolyte.In this paper, considering the property of the polyacrylonitrile and polyethylene oxide, select them as raw material for preparing a gel polymer, combined with the design of core-shell structure and PEO concentration formulations prepared PAN/PEO-based gel polymer electrolytes with excellent electrochemical performance with ionic conductivity reach 4.93×10-3S/cm. because of the mechanical properties slightly worse, therefore, improve the mechanical properties is necessary, Some typical methods to improve the mechanical strength of GPEs include:Electron beam irradiation, chemical synthesis, thermal polymerization. Compared with chemical synthesis and thermal polymerization, Electron beam irradiation is more simple, convenient, easy to control conditions, without the introduction of initiator or additives to give the pure product, process modification can be carried out at room temperature even at low temperatures. PEO treatment by radiation mainly occurred crosslinking reaction. Therefore, based on the study of PEO concentration formulation, select integrated performance of PAN/PEO nanofibers membrane treated with electron beam irradiation crosslinking method or the heat treatment method, and finally prepared the PAN/PEO-based polymer gel electrolytes with good mechanical properties and electrochemical properties. The results shown that the nanofiber membrane through mechanical and electrochemical properties of electron beam irradiation dose were improved, and ionic conductivity can increased to 5.36×10-3S/cm, heat treatment after a certain temperature the ionic conductivity can increased to 5.15×10-3S/cm. In addition, the influence of the spinning process of gel polymer electrolyte, the performance of gel polymer electrolytes prepared by coaxial electrostatic spinning method is better than the gel electrolyte gel electrolyte prepared by blending.