A method of in-situ coating conductive polymers to improve electrode capacity

Abstract

The invention relates to a preparation method of an electrode material, in particular to a method for in-situ coating a conductive polymer to increase the capacity of an electrode, and belongs to the technical field of electrochemistry. In the present invention, firstly, the powdery battery material is mechanically mixed with acetylene black and ball-milled, then pressed into tablets, and assembled into a battery as a positive electrode material, charged to 3‑4.2V, and then the charged electrode material is taken out and placed in a conductive Soak in an aqueous solution of polymer monomers and surfactants, take out the soaked electrode material, wash it, and dry it to obtain the electrode material in-situ coated with a conductive polymer, which can be applied to Lithium and sodium ion batteries, and the battery capacity is greatly improved, and the preparation method is simple and easy to operate.

Description

technical field

[0001] The invention relates to a preparation method of an electrode material, in particular to a method for in-situ coating a conductive polymer to increase the capacity of an electrode, and belongs to the technical field of electrochemistry.

[0002] technical background

[0003] With the increasingly serious energy and environmental problems, the research on high-efficiency, low-cost and environment-friendly renewable energy conversion and storage systems has become a research hotspot. Electrochemical energy storage technology is an energy storage method that uses electrochemical reactions to convert chemical energy and electrical energy. Among them, batteries are the cutting-edge technology of various high-performance energy storage devices. Lithium-sulfur, lithium-tin, lithium and sodium-ion batteries are widely used at present. The performance of the electrode material is the main factor affecting the performance of the battery. Therefore, higher requir...