Flame-retardant single-ion conducting polymer electrolytes based on anion acceptors for high-safety lithium metal batteries

Abstract

Solid-state lithium metal batteries (LMBs) assembled with polymer electrolytes (PEs) and lithium metal anodes are promising batteries owing to their enhanced safeties and ultrahigh theoretical energy densities. Nevertheless, polymer electrolytes...

Single-Ion Conducting Polymeric Protective Interlayer for Stable Solid Lithium-Metal Batteries

“…EIS plots of the (d) Li/PVEC/Li cell with the SIPPI and (e) Li/PVEC/Li cell after cycling at 25 °C. (f) Comparison of cycle life of Li/Li symmetric cells in this work with the previously reported polymer electrolytes. ,,,,,,,− …”

Triallyl cyanurate copolymerization delivered nonflammable and fast ion conducting elastic polymer electrolytes

“…In addition, the initial decomposition temperature of v-NBR/TAC electrolyte ($460 C) further conrms the major ame-retardant effect of TAC in inhibiting the combustion of electrolyte when ignited. Normally, ame retardant additives, such as inorganics 38 and phosphides, 39,40 are added to the electrolyte to improve its ame retardancy. The other is through the intrinsic nature of the ame-retardant polymer matrix.…”

Long-chain fluorocarbon-driven hybrid solid polymer electrolyte for lithium metal batteries

“…1–3 Nevertheless, due to the potential safety hazards and low theoretical energy densities of conventional lithium-ion batteries consisting of flammable liquid electrolyte (LE) and graphite anodes, researchers have begun to pursue superior alternatives. 4–6 Combining a non-volatile and non-inflammable solid electrolyte with Li metal anodes that have high capacity and low electrochemical potential provides a feasible solution. 5,6 As a substitute for LEs, Li + -conducting solid electrolytes form a critical component of solid-state lithium metal batteries (SLMBs) and require several alternative properties, such as subduing Li dendrite growth, high mechanical flexibility, and durable electrochemical and thermal stability.…”

“…However, the rigid interface between the electrode and an inorganic electrolyte cannot buffer the volume change during the charging and discharging process, which causes large dynamic interface impedance, and the uneven deposition of lithium ions on the Li metal interface may cause destructive lithium dendrites to grow along the grain boundaries. 4,9–12 In contrast, in addition to meeting the safety requirements, solid polymer electrolytes (SPE) are also possess excellent mechanical flexibility, lightweight and interface performance, which furnish a promising possibility for scalable application in SLMBs. 13–16…”