All-solid-state lithium ion rechargeable batteries(LIBs)consisting of solid electrolytes have been desired for higher energy density,long term durability and safety.A great challenge of all-solid state LIBs for practical use is reduction of the interfacial resistance.Effective interface modification techniques have been proposed,however,the interfacial resistance is still large because the charge transfer resistance at the active material/ solid electrolyte interface would be strongly affected by interfacial contact condition.Herein,we propose a new route to prepare smart interfaces for all-solid-state lithium ion batteries(LIBs).Direct growth of electrode active material crystals layer inside of Li ion conductive glass will provide heteroiunction formation at their interface.