Lithium button battery with lithium ion solid electrolyte sheet being diaphragm and preparation method thereof

Abstract

The invention provides a lithium button battery with a lithium ion solid electrolyte sheet being a diaphragm and a preparation method thereof. The battery includes a lithium ion solid electrolyte sheet, a cathode plate, a cathode case, a lithium sheet, an anode case, an electrolyte LiPF6, filter paper, a stainless steel sheet and an elastic piece. The preparation method includes: a) according to stoichiometric ratio, weighing raw materials; b) mixing and ball-milling the raw materials, Li2CO3, SrCO3, ZrO2 and Nb2O5, drying a wet mixture and grinding the mixture finely; c) placing the fine dried material in an alumina crucible and placing the crucible in a chamber electric furnace; d) heating the material to 1100 DEG C and maintaining the temperature for 10 h for calcining the material, wherein the carbonates are completely decomposed, then cooling the material; e) grinding and tabletting the material to obtain a lithium ion solid electrolyte sheet diaphragm sample; f) performing a solid phase synthesis reaction and cooling the product to prepare the lithium ion solid electrolyte sheet; g) preparing the cathode plate, and assembling and packaging the battery to obtain the final product. The lithium ion solid electrolyte sheet is high in ionic conductivity and low in electron conductivity, has high compactness, and is not liable to cause piercing of lithium dendrites, so that thelithium battery has good cycle performance.

Description

technical field [0001] The invention relates to the fields of solid electrolyte and electrochemistry, and is suitable for a button battery with a lithium-ion solid electrolyte sheet as a diaphragm, in particular to a button lithium battery with a lithium-ion solid electrolyte sheet as a diaphragm and a preparation method thereof. Background technique [0002] Lithium battery is a widely used energy storage device at present. It has the characteristics of high specific capacity, long cycle life, no memory effect, and has the advantages of safety, reliability and fast charging and discharging. It has attracted the attention of researchers and is Research hotspots in the field of new energy. Lithium batteries are usually composed of the following components: positive electrode materials, negative electrode materials, electrolytes, separators, and battery casings. The main function of the separator of the lithium battery is to isolate the positive and negative electrodes so tha...

AI Technical Summary

Problems solved by technology

Moreover, the electronic conductivity of solid electrolytes is extremely low, generally one ten-thousandth of the ionic conductivity.

Images