Continuous Carbon Channels Enable Full Na-Ion Accessibility for Superior Room-Temperature Na-S Batteries

© 2022 Wiley-VCH GmbH.

Bibliographische Detailangaben
Veröffentlicht in:Advanced materials (Deerfield Beach, Fla.). - 1998. - 34(2022), 8 vom: 09. Feb., Seite e2108363
1. Verfasser: Wu, Can (VerfasserIn)
Weitere Verfasser: Lei, Yaojie, Simonelli, Laura, Tonti, Dino, Black, Ashley, Lu, Xinxin, Lai, Wei-Hong, Cai, Xiaolan, Wang, Yun-Xiao, Gu, Qinfen, Chou, Shu-Lei, Liu, Hua-Kun, Wang, Guoxiu, Dou, Shi-Xue
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2022
Zugriff auf das übergeordnete Werk:Advanced materials (Deerfield Beach, Fla.)
Schlagworte:Journal Article Na2S interphase continuous carbon channels full Na-ion accessibility sodium-sulfur batteries
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520 |a Porous carbon has been widely used as an efficient host to encapsulate highly active molecular sulfur (S) in Li-S and Na-S batteries. However, for these sub-nanosized pores, it is a challenge to provide fully accessible sodium ions with unobstructed channels during cycling, particularly for high sulfur content. It is well recognized that solid interphase with full coverage over the designed architectures plays critical roles in promoting rapid charge transfer and stable conversion reactions in batteries, whereas constructing a high-ionic-conductivity solid interphase in the pores is very difficult. Herein, unique continuous carbonaceous pores are tailored, which can serve as multifunctional channels to encapsulate highly active S and provide fully accessible pathways for sodium ions. Solid sodium sulfide interphase layers are also realized in the channels, showing high Na-ion conductivity toward stabilizing the redox kinetics of the S cathode during charge/discharge processes. This systematically designed carbon-hosted sulfur cathode delivers superior cycling performance (420 mAh g-1 at 2 A g-1 after 2000 cycles), high capacity retention of ≈90% over 500 cycles at current density of 0.5 A g-1 , and outstanding rate capability (470 mAh g-1 at 5 A g-1 ) for room-temperature sodium-sulfur batteries 
650 4 |a Journal Article 
650 4 |a Na2S interphase 
650 4 |a continuous carbon channels 
650 4 |a full Na-ion accessibility 
650 4 |a sodium-sulfur batteries 
700 1 |a Lei, Yaojie  |e verfasserin  |4 aut 
700 1 |a Simonelli, Laura  |e verfasserin  |4 aut 
700 1 |a Tonti, Dino  |e verfasserin  |4 aut 
700 1 |a Black, Ashley  |e verfasserin  |4 aut 
700 1 |a Lu, Xinxin  |e verfasserin  |4 aut 
700 1 |a Lai, Wei-Hong  |e verfasserin  |4 aut 
700 1 |a Cai, Xiaolan  |e verfasserin  |4 aut 
700 1 |a Wang, Yun-Xiao  |e verfasserin  |4 aut 
700 1 |a Gu, Qinfen  |e verfasserin  |4 aut 
700 1 |a Chou, Shu-Lei  |e verfasserin  |4 aut 
700 1 |a Liu, Hua-Kun  |e verfasserin  |4 aut 
700 1 |a Wang, Guoxiu  |e verfasserin  |4 aut 
700 1 |a Dou, Shi-Xue  |e verfasserin  |4 aut 
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773 1 8 |g volume:34  |g year:2022  |g number:8  |g day:09  |g month:02  |g pages:e2108363 
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