An lithium-sulfur battery including an anode, a cathode, and a solid-state electrolyte is provided. The anode may be formed as a single layer of lithium and/or as a cavity. In some aspects, the cavity may receive lithium deposits based on lithium output from the cathode. The cathode may be formed from a composition of matter including pores. A solid-state electrolyte may be dispersed throughout the cathode and in contact with the anode. The solid-state electrolyte may be formed as a membrane and may provide ionic conduction capabilities associated with a separator. The solid-state electrolyte includes a polymer matrix formed of glass fibers interconnected with each other. The polymer matrix has an ionic conductivity and includes polyethylene oxide (PEO), polyvinylidene difluoride (PVDF), polyetheramine having repeated oxypropylene units in its backbone, and one or more lithium-containing salts including one or more of lithium bis(trifluoromethanesulfonyl)imide (LiTFSI) or lithium iodide (LiI).