Enhanced cycle stability of polypyrrole-derived nitrogen-doped carbon-coated tin oxide hollow nanofibers for lithium battery anodes

De Pham-Cong, Jung Soo Park, Jae Hyun Kim, Jinwoo Kim, Paul V. Braun, Jun Hee Choi, Su Jae Kim, Se Young Jeong, Chae Ryong Cho

Research output: Contribution to journalArticlepeer-review

Abstract

SnO2 hollow nanofibers (SnO2 hNFs) are prepared through electrospinning and annealing processes. The polypyrrole layers coated onto the surface of the SnO2 hNFs are annealed in a nitrogen atmosphere. The nitrogen-doped carbon-coated SnO2 hNFs (SnO2/NC hNFs) are composed of SnO2 hNFs with a wall thickness of 60–80 nm and a nitrogen-doped carbon layer ∼10 nm thick. The nitrogen content in the carbon layer is approximately 7.95%. Owing to the nitrogen-doped carbon shell layers, the specific reversible capacity of SnO2/NC hNFs at a current density of 0.2 A g−1 after 100 cycles is 1648 mAh g−1, which is 427% higher than that of (386  mAh g−1) SnO2 hNFs. This strategy may open new avenues for the design of other composite architectures as electrode materials in order to achieve high-performance lithium ion batteries.

Original languageEnglish (US)
Pages (from-to)28-37
Number of pages10
JournalCarbon
Volume111
DOIs
StatePublished - Jan 1 2017

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)

Fingerprint Dive into the research topics of 'Enhanced cycle stability of polypyrrole-derived nitrogen-doped carbon-coated tin oxide hollow nanofibers for lithium battery anodes'. Together they form a unique fingerprint.

Cite this