Journal
CHEM
Volume 4, Issue 2, Pages 298-307Publisher
CELL PRESS
DOI: 10.1016/j.chempr.2017.12.003
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Funding
- Ministry of Science and Technology of the People's Republic of China [2016YFA0202500]
- National Natural Science Foundation of China [21773264, U1301244]
- Strategic Priority Research Program of the Chinese Academy of Sciences [XDA09010300]
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The aspiration of employing metallic lithium (Li) as the anode is impeded by Li dendrites and unwanted redox shuttles in liquid electrolytes. In this study, a repellent used to safeguard the Li anode was demonstrated during the lithiation of a nanosized AlPO4 additive in an infiltrated quasi-solid electrolyte (i-QSE) containing a concentrated electrolyte in a poly(tri-acrylate) network. As a result of the infiltrated structure, the ion transfer number of i-QSE attained 0.79, and the activation energy was only 0.12 eV. Compared with the control counterpart, the repellent composed of Al-containing (oxy) fluorides played a vital role in stabilizing the interface and promoted the cycling durability of batteries (capacity retention >85% after 200 cycles) with a 1 C rate at an elevated temperature (55 degrees C) without dendrite growth and by-product drifting. Such in situ generation of a repellent for a Li anode is a valid approach for metal-anode protection at the interface-engineering level.
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