All-solid-state lithium batteries (ASSLBs), utilizing sulfide solid electrolyte, are considered as the promising design on account of their superior safety and high energy density, whereas the time-consuming preparation process of sulfide electrolyte powders and the thickness of electrolyte layer hinder their practical application. Herein, an innovative ultimate-energy mechanical alloying plus rapid thermal processing approach is employed to rapidly synthesize the crystalline Argyrodite-type conductor Li_5.3PS_4.3ClBr_0.7 (LPSClBr) with superior ionic conductivity (11.7 mS cm⁻¹). Furthermore, to realize the higher energy density of the battery, an ultrathin LPSClBr sulfide electrolyte membrane with superior ionic conductivity of 6.5 mS cm⁻¹ is fabricated with the aid of polytetrafluoroethylene (PTFE) binder and the reinforced cellulose mesh. Moreover, a simple solid electrolyte interphase (SEI) is constructed on the surface of lithium metal to enhance anodic stability. Benefiting from the joint efforts of these merits, the modified ASSLBs with a high cell-level energy density of 311 Wh kg⁻¹ show an excellent cyclic stability. The assembled all-solid-state Li₂S/Li pouch cell can operate even under the severe conditions of bending and cutting, demonstrating the enormous potential of the sulfide electrolyte membrane for ASSLBs application.

采用硫化物固体电解质的全固态锂电池 (ASSLBs) 因其优异的安全性和高能量密度而被认为是有前途的设计，而硫化物电解质粉末的制备过程和电解质层的厚度耗时长。阻碍其实际应用。在此，采用创新的极限能量机械合金化加快速热处理方法快速合成^具有优异离子电导率（11.7 _{mS cm -1}）。此外，为了实现电池的更高能量密度，在聚四氟乙烯（PTFE）粘合剂和增强纤维素网的帮助下，制备了具有6.5 mS cm ^{-1优异离子电导率的超薄 LPSClBr 硫化物电解质膜。}此外，在锂金属表面构建了一个简单的固体电解质界面（SEI）以增强阳极稳定性。得益于这些优点的共同努力，具有 311 Wh kg ^-1的高电池级能量密度的改性 ASSLBs表现出优异的循环稳定性。组装的全固态Li ₂S/Li软包电池即使在弯曲和切割的恶劣条件下也能工作，这表明硫化物电解质膜在 ASSLBs 应用中的巨大潜力。