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Article Abstract
The success of achieving scale-up deployment of zinc ion batteries is to selectively regulate the rapid and dendrite-free growth of zinc anodes. Herein, this is proposed that a creative design strategy of constructing multi-functional separators (MFS) to stabilize the zinc anodes. By in situ decorating metal-organic-framework coating on commercial glass fiber, the upgraded separator is of remarkable benefit for strong anion (SO ) anchoring, uniform ion flux across the interface, and boosted Zn desolvation. Such a feature selectively promotes the Zn transportation efficiency, which enables a high Zn transference number of 0.81, enhanced ionic conductivity, and a superb exchange current density of 12.80 mA cm. Consequently, the zinc anode can be operated stably with an ultra-long service lifetime of over 4800 h in symmetric cells and improved cycling endurance in full batteries. This work paves an attractive pathway to design multi-functional separators with regulated ion flux and selectivity toward high-energy metal batteries beyond zinc chemistry.
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| http://dx.doi.org/10.1002/smll.202410342 | DOI Listing |
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