Core-sheath structured porous carbon nanofiber composite anode material derived from bacterial cellulose/polypyrrole as an anode for sodium-ion batteries. (December 2015)

• Record Type: Journal Article
• Authors: Zhang, Zhian; Zhang, Juan; Zhao, Xingxing; Yang, Fuhua
• Is Part Of: Carbon. Volume 95(2015)
• Page Start: 552
• Page End: 559
• Publication Date: 2015-12
• Subjects: Sodium-ion batteries -- Carbon nanofiber -- Bacterial cellulose -- Nitrogen-doped porous carbon; Carbon -- Periodicals; Carbone -- Périodiques; Koolstof; Toepassingen; Electronic journals; 546.681
• DOI: 10.1016/j.carbon.2015.08.069
• Languages: English
• ISSNs: 0008-6223

Abstract

Abstract: A core-sheath structured carbon nanofiber@nitrogen-doped porous carbon (CNF@NPC) composite is synthesized as a promising anode material for sodium-ion batteries (SIBs). Particularly, the eco-friendly bacterial cellulose (BC) is used as both template and precursor for the synthesis of CNF@NPC through the carbonization of bacterial cellulose@polypyrrole (BC@PPy). Due to the particular core-sheath structure and the synergetic effect between the CNF core layer and the NPC outer layer, the CNF@NPC exhibit outstanding electrochemical performance, including a high reversible specific capacity (240 mAh g −1 at 100 mA g −1 over 100 cycles), excellent rate performance (146.5 mAh g −1 at 1000 mA g −1 ), and superior cycling stability (148.8 mAh g −1 at 500 mA g −1 over 400 cycles). The application of environmentally friendly electrode material may open a new situation for SIBs.