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Continuous zirconium-based MOF-808 membranes for polysulfide shuttle suppression in lithium-sulfur batteries.
- Source :
-
Applied Surface Science . Sep2022, Vol. 596, pN.PAG-N.PAG. 1p. - Publication Year :
- 2022
-
Abstract
- [Display omitted] • A Zr-based continuous MOF-808 membrane was developed on carbon nanotube film. • MOF-808 membrane was used as ion-selective interlayer material for Li-S batteries. • MOF-808 membrane can selectively block polysulfides and promote their conversion. • The Li-S batteries deliver impressive cycle stability and rate capability. The shuttle effect of polysulfides is the most critical challenge impeding the practical process of lithium-sulfur batteries. Herein, we report a continuous crystalline zirconium-based MOF-808 membrane that prepared on carbon nanotube film through a facial in-situ hydrothermal method, which is to be employed as multifunctional interlayer material in lithium-sulfur batteries. The growth characteristics of MOF-808 membrane and its applicability to lithium-sulfur batteries are detailedly investigated. With appropriate pore size and good electrolyte wettability, the as-prepared MOFs membrane can serve as an ion-selective barrier that efficaciously blocks polysulfides while allowing the rapid transport of lithium ions through sieving effect. Moreover, the redox kinetics is also accelerated by the MOF-808 membrane. Consequently, with the employment of the as-prepared interlayer, lithium-sulfur batteries deliver a durable cycle stability with a limited decay of merely 0.03 % per cycle over 500 cycles at 1 C, and an excellent rate capability of 707.3 mAh g−1 under 5 C. The strategy proposed here would advance the development of continuous MOFs membrane in the field of rechargeable batteries. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 01694332
- Volume :
- 596
- Database :
- Academic Search Index
- Journal :
- Applied Surface Science
- Publication Type :
- Academic Journal
- Accession number :
- 157119389
- Full Text :
- https://doi.org/10.1016/j.apsusc.2022.153628