Method for directly preparing polyvinyl borate complexing water gel electrolytes on surface of electrode

Abstract

The invention discloses a method for directly preparing polyvinyl borate complexing water gel electrolytes on the surface of an electrode, and gel electrolytes are prepared in an electrochemistry mode. The method particularly includes the steps that the electrode of an electrochemistry device serves as the cathode in an electroplating pool, a prepared electric gel solution is placed into the electroplating pool, voltage is applied between the cathode and an anode for a certain period of time, the gel electrolytes are directly deposited on the surface of the cathode for forming a polyvinyl borate X salt complexation hydrogel membrane, and the hydrogel membrane contains XY salt from the electric gel solution. The formed colloid film and electrode activity materials can be integrally formed, complete soaking is guaranteed, the internal resistance of the electrochemistry can be lowered, adverse influences that the power consumption is larger, heat is prone to being emitted are avoided, the ionic conductivity of the gel electrolytes is high, the production process is simplified, and production efficiency is improved.

Description

technical field [0001] The invention belongs to the technical field of polymer gel electrolyte and its preparation, and in particular relates to a method for directly preparing polyvinyl alcohol borate complexed hydrogel electrolyte on an electrode surface. Background technique [0002] For many electrochemical devices, including batteries, supercapacitors, electrochemical sensors, etc., the traditional electrolyte materials used are mostly liquid electrolyte solutions. Although the electrolyte solution has the advantages of high ionic conductivity, easy configuration, and low cost, its liquid nature not only makes it easy to leak and evaporate, but also requires high sealing of the device casing and serious internal corrosion. In order to solve various deficiencies of liquid electrolytes, people try to use solid electrolyte materials to prepare battery capacitors, etc. However, solid electrolytes, due to their stable form, make up for the various deficiencies of liquid ele...

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Problems solved by technology

Although these two technologies have the advantages of strong operability and simple preparation, it is a pity that the corresponding electrochemical devices are prepared by solution casting, which not only needs to spend a lot of time and energy to remove the solvent water, resulting in long preparation cycle and high cost. increase, and the assembly of the polymer film and the electrode also has the above-mentioned shortcomings of poor contact with the active material and the electrode inside the battery, resulting in a high internal resistance of the electrical device, causing adverse effects such as high power consumption and easy heating of the electrical device

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