Journal Article Li-metal anodes Na-K alloys Review alkali metal batteries all-solid-state lithium batteries dendrite suppression flexible lithium-sulfur batteries high-voltage LiCoO2 cathodes inorganic-rich cathode electrolyte interphase interface modification lithium metal anodes lithium-sulfur batteries nonflammable electrolytes oxide layers quenching method self-healing single-crystalline cathodes solid electrolyte interphase sponge nickel spray quenching sulfide cathodes sulfide electrolytes sulfur cathodes wetting promotion