Quasi-solid softly-packaged type Na-CO<2> room temperature secondary battery and preparation method

Abstract

Disclosed is a quasi-solid softly-packaged type Na-CO<2> room temperature secondary battery. The secondary battery is characterized by comprising a porous steel plate, a positive plate, a quasi-solid polymer electrolyte membrane, a negative plate and an aluminum plastic composite membrane shell, wherein the negative plate is a metal sodium sheet; the positive plate comprises a positive electrode material of a porous structure, and a current collector; the quasi-solid polymer electrolyte membrane is positioned between the negative electrode sodium sheet and the positive electrode current collector and used for supplying sodium ions and restraining volatilization and leakage of the electrolyte; the electrolyte is a NaClO<4> / tetraethylene glycol dimethyl ether solution which is immersed in the polymer membrane; and the positive plate, the quasi-solid polymer electrolyte membrane and the negative plate form a stacked structure and are integrally packaged in the aluminum plastic composite membrane shell. The quasi-solid softly-packaged type Na-CO<2> room temperature secondary battery has the advantages of electrolyte leakage prevention, electrolyte volatilization suppression, high capacity, room temperature rechargeable performance, environment friendliness, low cost and long service; and in addition, the preparation method is simple in operation, high in controllability, high in consistency, and favorable for large-scale production.

Description

technical field [0001] The invention relates to a new type of secondary battery, in particular to a quasi-solid soft pack Na-CO 2 A room temperature secondary battery and a preparation method thereof belong to the field of new chemical power sources. Background technique [0002] In the past century, carbon dioxide (CO2) mainly produced by fossil fuel combustion and vehicle exhaust emissions 2 ) and other greenhouse gases have increased sharply year by year, and the greenhouse effect of the atmosphere has also increased, which has caused a series of problems and has attracted worldwide attention. Therefore, CO 2 The capture and reutilization of them has aroused great attention. CO 2 It is a colorless, odorless, non-combustible and non-flammable gas at normal temperature, which makes it very safe. But its high chemical stability also makes CO 2 It is very difficult to restore and utilize. [0003] For this, people based on CO 2 aspects of electrochemical storage, such...

AI Technical Summary

Problems solved by technology

In recent years, metal-gas batteries have become a research hotspot in the field of chemical energy storage power sources. 2 Metal-carbon dioxide batteries as gas electrodes have attracted attention because of their high specific energy, high power density, and easy availability of positive active materials, but they are limited to the selection of electrolyte components and additives, the design of gas electrodes, and the selection of catalysts. etc., the metal-carbon dioxide battery has never had a great breakthrough

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