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231225s2017 xx |||||o 00| ||eng c |
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|a 10.1002/adma.201701294
|2 doi
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|a pubmed24n0912.xml
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|a (DE-627)NLM273676059
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|a DE-627
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|e rakwb
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|a eng
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|a Zhou, Jinqiu
|e verfasserin
|4 aut
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| 245 |
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|a Selenium-Doped Cathodes for Lithium-Organosulfur Batteries with Greatly Improved Volumetric Capacity and Coulombic Efficiency
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|c 2017
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|a Text
|b txt
|2 rdacontent
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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 18.07.2018
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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 © 2017 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
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|a For the first time a new strategy is reported to improve the volumetric capacity and Coulombic efficiency by selenium doping for lithium-organosulfur batteries. Selenium-doped cathodes with four sulfur atoms and one selenium atom (as the doped heteroatom) in the confined structure are designed and synthesized; this structure exhibits greatly improved volumetric/areal capacities, and a Coulombic efficiency of almost 100% for highly stable lithium-organosulfur batteries. The doping of Se significantly enhances the electronic conductivity of battery electrodes by a factor of 6.2 compared to pure sulfur electrodes, and completely restricts the production of long-chain lithium polysulfides. This allows achievement of a high gravimetric capacity of 700 mAh g-1 close to its theoretical mass capacity, an exceptional volumetric capacity of 2457 mAh cm-3 , and excellent capacity retention of 92% after 400 cycles. Shuttle effect is efficiently weakened since no long-chain polysulfides are detected from in situ UV/vis results throughout the entire cycling process arising from selenium doping, which is theoretically confirmed by density functional theory calculations
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|a Journal Article
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|a Coulombic efficiency
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|a Se doping
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|a lithium-organosulfur batteries
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|a shuttle effect
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|a volumetric capacity
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|a Qian, Tao
|e verfasserin
|4 aut
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|a Xu, Na
|e verfasserin
|4 aut
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| 700 |
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|a Wang, Mengfan
|e verfasserin
|4 aut
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|a Ni, Xuyan
|e verfasserin
|4 aut
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|a Liu, Xuejun
|e verfasserin
|4 aut
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|a Shen, Xiaowei
|e verfasserin
|4 aut
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| 700 |
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|a Yan, Chenglin
|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 29(2017), 33 vom: 25. Sept.
|w (DE-627)NLM098206397
|x 1521-4095
|7 nnns
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|g volume:29
|g year:2017
|g number:33
|g day:25
|g month:09
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|u http://dx.doi.org/10.1002/adma.201701294
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