This technology features a dual-protective coating on a copper current collector that, during charge/discharge, self-assembles in-situ to form multiple lithiophilic alloy layers (Li-Sn/Li-Sr) and a stable, LiF-rich interphase. This effectively suppresses dendrite growth, enabling high-energy-density, long-life anode-free lithium batteries.

The challenge of solid polymer electrolytes and ceramic electrolytes lies in balancing good flexibility and processability, high ionic conductivity and mechanical strength, as well as excellent compatibility with solid-state electrodes. This study focuses on polymer/ceramic hybrid batteries, delving into the interplay between these materials, including detailed interface modeling and analysis. Our principal objective is to elevate the ion conductivity of the electrolyte to a target of 2 mS/cm and enhance the compatibility between the solid electrolyte and the electrode. These efforts collectively aim to elevate the performance of solid-state batteries.

This technology is applicable to next-generation, high-energy-density batteries, meeting the demands of electric vehicles, consumer electronics, and grid energy storage. The manufacturing process uses mature immersion and coating methods, offering high compatibility with existing lithium-ion battery production lines, cost-effectiveness, and strong potential for mass production and commercialization.