UiO‐66‐NH2@67 Core–Shell Metal–Organic Framework as Fillers in Solid Composite Electrolytes for High‐Performance All‐Solid‐State Lithium Metal Batteries. Issue 4 (19th February 2023) - Zhang, Qi
Abstract : 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 S cm −1 at 60 °C) and a wide electrochemical stability window of ≈5.0 V. 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. Abstract : A novel solid membrane with core‐shell structured metal‐organic frameworks is manufactured. The membrane possesses satisfying ionic conductivity, a wide electrochemical stability window, and a superior lithium‐ion transference number of 0.67. It can still maintain a discharge capacity of around 120.9 mAh g −1 at 3 C.