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Article (Scientific journals)
Expansion-tolerant architectures for stable cycling of ultrahigh-loading sulfur cathodes in lithium-sulfur batteries
Shaibani, Mahdokht; Mirshekarloo, Meysam Sharifzadeh; Singh, Ruhani et al.
2020In Science Advances, 6 (1 eaay2757)
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Abstract :
[en] Lithium-sulfur batteries can displace lithium-ion by delivering higher specific energy. Presently, however, the superior energy performance fades rapidly when the sulfur electrode is loaded to the required levels\textemdash5 to 10 mg cm-2\textemdash due to substantial volume change of lithiation/delithiation and the resultant stresses. Inspired by the classical approaches in particle agglomeration theories, we found an approach that places minimum amounts of a high-modulus binder between neighboring particles, leaving increased space for material expansion and ion diffusion. These expansion-tolerant electrodes with loadings up to 15 mg cm-2 yield high gravimetric (\>1200 mA\textperiodcenteredhour g-1) and areal (19 mA\textperiodcenteredhour cm-2) capacities. The cells are stable for more than 200 cycles, unprecedented in such thick cathodes, with Coulombic efficiency above 99\%.
Disciplines :
Chemistry
Energy
Materials science & engineering
Author, co-author :
Shaibani, Mahdokht
Mirshekarloo, Meysam Sharifzadeh
Singh, Ruhani
Easton, Christopher D.
Cooray, M. C. Dilusha
Eshraghi, Nicolas  ;  Université de Liège - ULiège > Département de chimie (sciences) > LCIS - GreenMAT
Abendroth, Thomas
Dörfler, Susanne
Althues, Holger
Kaskel, Stefan
Hollenkamp, Anthony F.
Hill, Matthew R.
Majumder, Mainak
More authors (3 more) Less
Language :
English
Title :
Expansion-tolerant architectures for stable cycling of ultrahigh-loading sulfur cathodes in lithium-sulfur batteries
Publication date :
2020
Journal title :
Science Advances
eISSN :
2375-2548
Publisher :
American Association for the Advancement of Science
Volume :
6
Issue :
1 eaay2757
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 04 January 2020

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