Semi-Solid Pouch Battery and Preparation Method Thereof

Abstract

Provided are a semi-solid pouch battery and a preparation method thereof. According to the defects of high gas production, synchronous solidified bubbles, low initial coulombic efficiency, poor cycling performance, and the like of an existing in-situ polymerization lithium-ion pouch battery obtained through one-step liquid injection polymerization, a process route of adding steps, such as secondary liquid injection, etc., is provided for a semi-solid lithium-ion pouch battery, for which an in-situ polymerization method is used, such that an electrolyte solution is fully formed before in-situ polymerization and is fully reacted, full production and exhaustion of gases are realized, and the aims of achieving bubble-free solidifying, improving the initial coulombic efficiency, and improving the cycling performance of a cell are achieved. By means of the above method, and a semi-solid lithium-ion battery meeting the requirements of a real scenario may be produced.

Dependencies are inferred from the claim text.