Three-Dimensional Polypyrrole Nano-Network with Sb Nanocrystals as Electrode Material for Sodium-Ion and Lithium-Ion Batteries

Meiqing Guo, Jiajun Chen, Xiao Liu, Weijia Meng, Xiaogang Zhang, Genwei Wang, Zhongchao Bai, Shuai Chen, Zhihua Wang, Fuqian Yang

Research output: Contribution to journalArticlepeer-review

5 Scopus citations

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

Original languageEnglish
Article number020527
JournalJournal of the Electrochemical Society
Volume167
Issue number2
DOIs
StatePublished - Jan 23 2020

Bibliographical note

Publisher Copyright:
© 2020 The Electrochemical Society ("ECS"). Published on behalf of ECS by IOP Publishing Limited.

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Materials Chemistry
  • Surfaces, Coatings and Films
  • Electrochemistry
  • Renewable Energy, Sustainability and the Environment

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