Construction of tubular polypyrrole-wrapped biomass-derived carbon nanospheres as cathode materials for lithium-sulfur batteries

Qiuhong Yu, Yang Lu, Tao Peng, Xiaoyi Hou, Rongjie Luo, Yange Wang, Hailong Yan, Xianming Liu, Jang Kyo Kim, Yongsong Luo

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15 Scopus citations

Abstract

A promising hybrid material composed of tubular polypyrrole (T-PPy)-wrapped monodisperse biomass-derived carbon nanospheres (BCSs) was first synthesized successfully via a simple hydrothermal approach by using watermelon juice as the carbon source, and further used as an anchoring object for sulfur (S) of lithium-sulfur (Li-S) batteries. The use of BCSs with hydrophilic nature as a framework could provide large interface areas between the active materials and electrolyte, and improve the dispersion of T-PPy, which could help in the active material utilization. As a result, BCS@T-PPy/S as a cathode material exhibited a high capacity of 1143.6 mA h g-1 and delivered a stable capacity up to 685.8 mA h g-1 after 500 cycles at 0.5 C, demonstrating its promising application for rechargeable Li-S batteries.

Original languageBritish English
Article number115002
JournalJournal of Physics D: Applied Physics
Volume50
Issue number11
DOIs
StatePublished - 14 Feb 2017

Keywords

  • carbon nanospheres, biomass
  • Li-S battery
  • tubular polypyrrole

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