| abstract |
The invention relates to the technical field of electrolyte materials, in particular to an alkaline semi-solid electrolyte membrane and its preparation and application. The preparation method includes: dissolving non-ionic water-soluble polymers and cellulose-like substances in water to form a precursor; adding quaternary ammonium salts to the precursor to form a spinning precursor; spinning the spinning precursor Silk to obtain a fiber layer; adding the fiber layer to a crosslinking liquid to carry out a crosslinking reaction to obtain a product. The preparation method of the present invention is simple, low in cost, non-polluting and environmentally friendly; the moisture content of the prepared alkaline semi-solid electrolyte membrane still exceeds 70% after being exposed to the air for 24 hours; the ion conductivity reaches 22.6mS cm ‑1 , surpassing the traditional PVA-KOH electrolyte; when applied to flexible zinc-air batteries, it shows good mechanical properties, self-supporting stability and cycle performance, and the battery can run smoothly for more than 100h at a current density of 5mA cm -2 , with great application prospects . |