Journal
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
Volume 140, Issue 3, Pages 896-899Publisher
AMER CHEMICAL SOC
DOI: 10.1021/jacs.7b12292
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Funding
- National Natural Science Foundation of China [21625304, 21733012, 21703072, 21473242]
- Strategic Priority Research Program of the CAS [XDA09010600]
- Collaborative Innovation Center of Suzhou Nano Science and Technology
- Promotion Program for Young and Middle-aged Teacher in Science and Technology Research of Huaqiao University
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Covalent organic frameworks (COFs) with their porous structures that are accommodative of Li salts are considered to be potential candidates for solid-state fast Li+ conductors. However, Li salts simply infiltrated in the pores of solid-state COTS tend:to be present in closely associate. ion;pairs, resulting in slow ionic diffusion dynamics. Here we incorporate cationic skeleton into the COF structure to split the Li salt ion pair through stronger, dielectric, screening. It is observed that the concentration of free Li+ ions in the resulting material is drastically increased, leading to a significantly improved Li+ conductivity in the absence of any solvent (up to 2.09 X 10(-4) S cm(-1) at 70 degrees C).
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