Sb nanocrystal-anchored hollow carbon microspheres for high-capacity and high-cycling performance lithium-ion batteries

Meiqing Guo, Jiajun Chen, Weijia Meng, Liyu Cheng, Zhongchao Bai, Zhihua Wang, Fuqian Yang

Research output: Contribution to journalArticlepeer-review

9 Scopus citations

Abstract

There is a great need to develop sustainable and clean energy storage devices and systems of high-energy and high-capacity densities. In this work, we synthesize antimony (Sb) nanocrystal-anchored hollow carbon microspheres (Sb@HCMs) via the calcination of cultivated yeast cells and the reduction of SbCl3 in an ethylene glycol solution on the surface of hollow carbon microspheres. The Sb@HCMs possess hollow and porous structure, and the Sb is present in the form of nanocrystals. Using the Sb@HCMs as the active-electrode material, we assemble lithium (Li)-ion half cells and full cells and investigate their electrochemical performance. The Li-ion half cells possess a charge capacity of 605 mA h g-1 after 100 cycles at a current density of 100 mA g-1 and a charge capacity of 469.9 mA h g-1 at a current density up to 1600 mA g-1, which is much higher than the theoretical capacity of 372 mA h g-1 for commercial graphite electrode. The Li-ion full cells with Sb@HCMs//LiCoO2 deliver a charge capacity of 300 mA h g-1 at a current density of 0.2 A g-1 after 50 cycles, and have potential in applications of energy storage.

Original languageEnglish
Article number135404
JournalNanotechnology
Volume31
Issue number13
DOIs
StatePublished - Jan 14 2020

Bibliographical note

Publisher Copyright:
© 2020 IOP Publishing Ltd.

Keywords

  • Sb nanocrystals
  • anode
  • hollow carbon microspheres
  • lithium-ion battery

ASJC Scopus subject areas

  • Bioengineering
  • General Chemistry
  • General Materials Science
  • Mechanics of Materials
  • Mechanical Engineering
  • Electrical and Electronic Engineering

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