S‐Doped N‐Rich Carbon Nanosheets with Expanded Interlayer Distance as Anode Materials for Sodium‐Ion Batteries

• Published in: Advanced materials (Weinheim) Vol. 29; no. 6; pp. np - n/a
• Main Authors: Yang, Jiqian, Zhou, Xianlong, Wu, Dihua, Zhao, Xudong, Zhou, Zhen
• Format: Journal Article
• Language: English
• Published: Germany Wiley Subscription Services, Inc 01-02-2017
• Subjects: Adsorption; Anodes; Carbon; Diffusion; Doping; Electrode materials; Insertion; Interlayers; Materials science; Nanosheets; Nanostructure; N‐rich carbon; Rechargeable batteries; S doping; Sodium-ion batteries; Storage capacity; Surface area; Surface chemistry; Two dimensional composites; anodes; N-rich carbon; sodium-ion batteries; S doping; nanosheets
• ISSN: 0935-9648; 1521-4095
• DOI: 10.1002/adma.201604108

2D composites with S doping into N‐rich carbon nanosheets are fabricated, whose interlayer distance becomes large enough for Na+ insertion and diffusion. The large surface area and stable structure also provide more sites for Na+ adsorption, leading to high Na‐storage capacity and excellent rate performance. Moreover, Faradaic reactions between Na+ and tightly bound S is beneficial for further improvement of Na‐storage capacity.