Universal Access to Two‐Dimensional Mesoporous Heterostructures by Micelle‐Directed Interfacial Assembly. (26th August 2020)

• Record Type: Journal Article
• Authors: Wang, Jie; Chang, Zhi; Ding, Bing; Li, Tao; Yang, Gaoliang; Pang, Zhibin; Nakato, Teruyuki; Eguchi, Miharu; Kang, Yong‐Mook; Na, Jongbeom; Guan, Bu Yuan; Yamauchi, Yusuke
• Is Part Of: Angewandte Chemie. Volume 132:Number 44(2020)
• Page Start: 19738
• Page End: 19743
• Publication Date: 2020-08-26
• Subjects: heterostructures -- lithium–sulfur batteries -- mesoporous carbon -- self-assembly -- two-dimensional materials; Chemistry -- Periodicals; 540
• DOI: 10.1002/ange.202007063
• Languages: English
• ISSNs: 0044-8249

Abstract

Abstract: Two‐dimensional (2D) mesoporous heterostructures combining ultrathin nanosheet morphology, periodic porous surface structures, and diverse hybrid compositions have become increasingly important for renewable energy storage and electronics. However, it remains a great challenge to develop a universal method to prepare 2D mesoporous heterostructures. Herein, we report a composite‐micelle‐directed interfacial assembly method to synthesize heterostructures of an ultrathin 2D material covered with mesoporous monolayers assembled on both sides. To demonstrate the concept, we first fabricated a new sandwichlike carbon@MXene@carbon mesoporous heterostructure through the self‐assembly of exfoliated MXene nanosheets and block copolymer F127/melamine‐formaldehyde resin composite micelles and subsequent thermal treatment. Finally, we demonstrate that the carbon@MXene@carbon mesoporous heterostructured nanosheets manifest remarkably enhanced electrochemical performance as a cathode material for lithium–sulfur batteries. Abstract : A general composite‐micelle‐directed interfacial assembly method was developed to prepare mesoporous heterostructures (see picture). With their structural and compositional advantages, the unique sandwichlike mesoporous carbon@MXene@mesoporous carbon heterostructured nanosheets exhibited remarkable electrochemical performance as a cathode material for lithium–sulfur batteries.