Metal–organic
frameworks (MOFs) have been proposed as emerging
fillers for composite polymer electrolytes (CPEs). However, MOF particles
are usually served as passive fillers that yield limited ionic conductivity
improvement. Building continuous MOF reinforcements and exploiting
their active roles remain challenging. Here we demonstrate the feasibility
of engineering fast Li+ conduction within MOF on molecule
conception. Two-dimensional Cu(BDC) MOF is selected as an active filler
due to its sufficient accessible open metal sites for perchlorate
anion anchoring to release free Li+, verified by theoretical
calculations and measurements. A novel Cu(BDC)-scaffold-reinforced
CPE is developed via in situ growth of MOF, which
provides fast Li+ channels inside MOF and continuous Li+ paths along the MOF/polymer interface for high Li+ conductivity (ambient 0.24 mS cm–1) and enables
high mechanical strength. Stable cycling is achieved in solid-state
Li-NCM811 full cell using the MOF-reinforced CPE. This molecule-basis
Li+ conduction strategy brings new ideas for designing
advanced CPEs.
Generating two complementary optical absorption and photoluminescence emission bands in CsPbBr3 NCs via a facile trivalent ion-mediated synthetic protocol.
Generating aqueous soluble covellite CuS nanocrystals with well-defined NIR plasmon absorbance by reacting Cu2+ with S2− ions via a facile and scalable protocol at room temperature, in the presence of various ligands.
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