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231225s2018 xx |||||o 00| ||eng c |
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|a 10.1002/adma.201805571
|2 doi
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|a pubmed25n0966.xml
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|a (DE-627)NLM290029538
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|a (NLM)30368962
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|a DE-627
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|c DE-627
|e rakwb
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|a eng
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|a Chung, Sheng-Heng
|e verfasserin
|4 aut
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|a A Facile, Low-Cost Hot-Pressing Process for Fabricating Lithium-Sulfur Cells with Stable Dynamic and Static Electrochemistry
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|c 2018
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|a Text
|b txt
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|a ƒaComputermedien
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|2 rdamedia
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|a ƒa Online-Ressource
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|2 rdacarrier
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|a Date Completed 13.11.2018
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|a Date Revised 01.10.2020
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a © 2018 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
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|a Lithium-sulfur batteries are among the most promising low-cost, high-energy-density storage devices. However, the inability to host a sufficient amount of sulfur in the cathode while maintaining good electrochemical stability under a lean electrolyte condition has limited the progress. The main cause of these challenges is the sensitivity of the sulfur cathode to the cell-design parameters (i.e., the amount of sulfur and electrolyte) and the experimental testing conditions (i.e., cycling rates and analysis duration). Here, a hot-pressing method is presented that effectively encapsulates a high amount of sulfur in the cathode within only 5 s, resulting in high sulfur loading and content of, respectively, 10 mg cm-2 and 65 wt%. The hot-pressed sulfur (HPS) cathodes exhibit superior dynamic and static electrochemical performance under a broad cycling-rate (C/20-1C rates) and low electrolyte/sulfur ratio (6 µL mg-1 ) conditions. The dynamic cell stability is demonstrated by high gravimetric and areal capacities of, respectively, 415-730 mAh g-1 and 7-12 mAh cm-2 at C/20-1C rates with a high capacity retention of over 70% after 200 cycles. The static cell stability is demonstrated by excellent shelf life with low self-discharge and stable cycle life on storing for over one year
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|a Journal Article
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|a electrochemical stability
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|a high loading
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|a hot-pressing
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|a lean electrolyte
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|a lithium-sulfur batteries
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|a Lai, Ke-Yu
|e verfasserin
|4 aut
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1 |
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|a Manthiram, Arumugam
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Advanced materials (Deerfield Beach, Fla.)
|d 1998
|g 30(2018), 46 vom: 30. Nov., Seite e1805571
|w (DE-627)NLM098206397
|x 1521-4095
|7 nnas
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| 773 |
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|g volume:30
|g year:2018
|g number:46
|g day:30
|g month:11
|g pages:e1805571
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| 856 |
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|u http://dx.doi.org/10.1002/adma.201805571
|3 Volltext
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|d 30
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|e 46
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|h e1805571
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