Three-Dimensional Polypyrrole Nano-Network with Sb Nanocrystals as Electrode Material for Sodium-Ion and Lithium-Ion Batteries. Issue 2 (23rd January 2020)

• Record Type: Journal Article
• Authors: Guo, Meiqing; Chen, Jiajun; Liu, Xiao; Meng, Weijia; Zhang, Xiaogang; Wang, Genwei; Bai, Zhongchao; Chen, Shuai; Wang, Zhihua; Yang, Fuqian
• Is Part Of: Journal of the Electrochemical Society. Volume 167:Issue 2(2020)
• Publication Date: 2020-01-23
• Subjects: Electrochemistry -- Periodicals; 541.3705
• DOI: 10.1149/1945-7111/ab69fa
• Languages: English
• ISSNs: 0013-4651

Abstract

Abstract : In this work, we develop an approach to synthesize a nanoscale structure with Sb nanocrystals and polypyrrole nano-network (Sb@ppy NNW) from the reduction of SbCl3 and the polymerization and crosslinking of pyrrole. The Sb@ppy NNW exhibits excellent electrochemical characteristics with incessant conduction paths for fast transfer of electrons, short paths for fast diffusion/migration of ions and large contact area between active material and electrolyte for the storage of Na/Li. The Sb@ppy NNW is used as active material in the working electrode for lithium-ion half cells and sodium-ion half cells. The sodium-ion half cells possess excellent cycling stability with a high specific capacity of 510 mA h g −1 at a current density of 100 mA g −1 and 463 mA h g −1 after 100 cycles at a current density of 500 mA g −1, and superior rate performance with a specific capacity of 635.6 mA h g −1 even at a current density of 1600 mA g −1 . The specific capacities for the lithium-ion half cells are 660 mA h g −1 after 100 cycles at a current density of 100 mA g −1 and 635.6 mA h g −1 even at a current density of 1600 mA g −1 .