Recently, a research team helmed by Researcher Huang Xuejie from the Institute of Physics at the Chinese Academy of Sciences, working in tandem with other research groups, has achieved a breakthrough by developing an innovative anion-regulation technology. This advancement enables the creation of a novel interface between the electrode and electrolyte, effectively addressing the most significant obstacle to the practical deployment of all-solid-state batteries. Moreover, it eliminates the necessity for applying external pressure to ensure interface contact.

Historically, the practical application of all-solid-state lithium-metal batteries has been hindered by the requirement for external pressure, as well as challenges like pore formation and cracking at the contact point between the lithium electrode and electrolyte. The research team ingeniously introduced iodide ions into the sulfide electrolyte, resulting in the formation of an iodine-rich interface. This interface facilitates a robust bond between the electrode and electrolyte.

Following hundreds of charge-discharge cycles, a prototype battery built on this technology exhibited remarkably stable and superior performance, significantly outperforming comparable batteries. The pertinent research findings have been published.