Porous polymer electrolyte supporting membrane material, preparation method thereof and application thereof
A porous polymer and electrolyte technology, applied in circuits, secondary batteries, electrical components, etc., can solve the problems of restricting the commercialization process of lithium-sulfur batteries, low utilization rate of positive active materials, low battery safety, etc. Solubility, operation and environmental requirements are not harsh, and the effect of wide electrochemical window
Inactive Publication Date: 2011-09-28
SOUTH CHINA NORMAL UNIVERSITY
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Abstract
The invention discloses a porous polymer electrolyte supporting membrane material and a lithium sulphur battery gel polymer electrolyte made of the same. A preparation method for the gel polymer electrolyte comprises the following steps of: dissolving a polymer blend in a solvent so as to form a uniform polymer solution, carrying out electrical spinning on the polymer solution so as to obtain reticular fibers, drying the reticular fibers in vacuum so as to obtain the porous polymer electrolyte supporting membrane material, and immersing the supporting membrane material in an ionic liquid type electrolyte so as to obtain the gel polymer electrolyte. The porous polymer electrolyte supporting membrane material has the advantages of controlled and uniformly distributed pore size, higher porosity and liquid absorption rate; compared with the common electrolyte of the lithium sulphur battery, the prepared lithium sulphur battery gel polymer electrolyte has the advantage of greatly improving the utilization rate of anode active materials and the stability of battery circulation; and the technology is simple, has low requirements for operation and environments and provides a simple, convenient and practical condition for technology production.
Application Domain
Secondary cellsFilament/thread forming +1
Technology Topic
SolventAbsorption rate +10
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PUM
Property | Measurement | Unit |
Fiber diameter | 200.0 | nm |
Diameter | 500.0 | nm |
Fiber diameter | 240.0 | nm |
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