Surface Engineering of Fluorinated Graphene Nanosheets Enables Ultrafast Lithium/Sodium/Potassium Primary Batteries

© 2023 Wiley-VCH GmbH.

Bibliographische Detailangaben
Veröffentlicht in:Advanced materials (Deerfield Beach, Fla.). - 1998. - 35(2023), 40 vom: 06. Okt., Seite e2303444
1. Verfasser: Luo, Zhenya (VerfasserIn)
Weitere Verfasser: Ma, Jun, Wang, Xiao, Chen, Duanwei, Wu, Dazhuan, Pan, Junan, Pan, Yong, Ouyang, Xiaoping
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2023
Zugriff auf das übergeordnete Werk:Advanced materials (Deerfield Beach, Fla.)
Schlagworte:Journal Article fluorinated graphene nanosheets high power density primary batteries surface engineering ultrafast discharge
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520 |a Fluorinated carbon (CFx ) is considered as a promising cathode material for lithium/sodium/potassium primary batteries with superior theoretical energy density. However, achieving high energy and power densities simultaneously remains a considerable challenge due to the strong covalency of the C-F bond in the highly fluorinated CFx . Herein, an efficient surface engineering strategy combining surface defluorination and nitrogen doping enables fluorinated graphene nanosheets (DFG-N) to possess controllable conductive nanolayers and reasonably regulated C-F bonds. The DFG-N delivers an unprecedented dual performance for lithium primary batteries with a power density of 77456 W kg-1 and an energy density of 1067 Wh kg-1 at an ultrafast rate of 50 C, which is the highest level reported to date. The DFG-N also achieves a record power density of 15 256 and 17 881 W kg-1 at 10 C for sodium and potassium primary batteries, respectively. The characterization results and density functional theory calculations demonstrate that the excellent performance of DFG-N is attributed to surface engineering strategies that remarkably improve electronic and ionic conductivity without sacrificing the high fluorine content. This work provides a compelling strategy for developing advanced ultrafast primary batteries that combine ultrahigh energy density and power density 
650 4 |a Journal Article 
650 4 |a fluorinated graphene nanosheets 
650 4 |a high power density 
650 4 |a primary batteries 
650 4 |a surface engineering 
650 4 |a ultrafast discharge 
700 1 |a Ma, Jun  |e verfasserin  |4 aut 
700 1 |a Wang, Xiao  |e verfasserin  |4 aut 
700 1 |a Chen, Duanwei  |e verfasserin  |4 aut 
700 1 |a Wu, Dazhuan  |e verfasserin  |4 aut 
700 1 |a Pan, Junan  |e verfasserin  |4 aut 
700 1 |a Pan, Yong  |e verfasserin  |4 aut 
700 1 |a Ouyang, Xiaoping  |e verfasserin  |4 aut 
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773 1 8 |g volume:35  |g year:2023  |g number:40  |g day:06  |g month:10  |g pages:e2303444 
856 4 0 |u http://dx.doi.org/10.1002/adma.202303444  |3 Volltext 
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