Bendable and Thin Sulfide Solid Electrolyte Film: A New Electrolyte Opportunity for Free-Standing and Stackable High-Energy All-Solid-State Lithium-Ion Batteries

• DOI: 10.1021/acs.nanolett.5b00538
• Publication Date: 2015-04-28T14:42:45Z
• Authors: Young Jin Nam; Sung-Ju Cho; Dae Yang Oh; Jun-Muk Lim; Sung Youb Kim; Jun Ho Song; Young-Gi Lee; Sang-Young Lee; Yoon Seok Jung
• Keywords: Energy density; Fast ion conductor; Current collector

Bulk-type all-solid-state lithium batteries (ASLBs) are considered a promising candidate to outperform the conventional lithium-ion batteries. Unfortunately, current technology level of ASLBs is in stage infancy terms cell-based (not electrode-material-based) energy densities and scalable fabrication. Here, we report on first ever bendable thin sulfide solid electrolyte films reinforced with mechanically compliant poly(paraphenylene terephthalamide) nonwoven (NW) scaffold, which enables fabrication free-standing stackable high density rate capabilities. The ASLB, using (∼70 μm) NW-reinforced SE film, exhibits 3-fold increase cell-energy-density compared that cell without NW scaffold.