UiO-66-NH2@67 Core-Shell Metal-Organic Framework as Fillers in Solid Composite Electrolytes for High-Performance All-Solid-State Lithium Metal Batteries

摘要

Benefiting from employing solid composite electrolytes (SCEs), all-solid-state lithium-ion batteries (ASSLBs) are recognized to occupy with high energy density and safety. Herein, a polymer-based SCE membrane (SCE-66@67) with core-shell structured metal-organic frameworks (MOFs) (UiO-66-NH2@67) as the fillers is presented. The SCE has combined the advantages of the two kinds of MOFs and shows a satisfying ionic conductivity (2.09 × 10~(-4) Scm~(-1) at 60 °C) and a wide electrochemical stability window of ≈5.0V. The full cell (Li/SCE-66@67/LiFePO4) also maintains a high capacity of 120.9 mAh g~(-1) at 3 C. This research might help to promote the development of future SCEs for ASSLBs.