Enhanced Lithium- and Sodium-Ion Storage in an Interconnected Carbon Network Comprising Electronegative Fluorine

Seok Min Hong, Vinodkumar Etacheri, Chulgi Nathan Hong, Seung Wan Choi, Ki Bong Lee, Vilas G. Pol

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

Fluorocarbon (CxFy) anode materials were developed for lithium- and sodium-ion batteries through a facile one-step carbonization of a single precursor, polyvinylidene fluoride (PVDF). Interconnected carbon network structures were produced with doped fluorine in high-temperature carbonization at 500-800 °C. The fluorocarbon anodes derived from the PVDF precursor showed higher reversible discharge capacities of 735 mAh g-1 and 269 mAh g-1 in lithium- and sodium-ion batteries, respectively, compared to the commercial graphitic carbon. After 100 charge/discharge cycles, the fluorocarbon showed retentions of 91.3% and 97.5% in lithium (at 1C) and sodium (at 200 mA g-1) intercalation systems, respectively. The effects of carbonization temperature on the electrochemical properties of alkali metal ion storage were thoroughly investigated and documented. The specific capacities in lithium- and sodium-ion batteries were dependent on the fluorine content, indicating that the highly electronegative fluorine facilitates the insertion/extraction of lithium and sodium ions in rechargeable batteries.

Original languageEnglish
Pages (from-to)18790-18798
Number of pages9
JournalACS Applied Materials and Interfaces
Volume9
Issue number22
DOIs
Publication statusPublished - 2017 Jun 7

Fingerprint

Fluorine
Lithium
Carbon
Fluorocarbons
Sodium
Ions
Carbonization
Anodes
Alkali Metals
Secondary batteries
Alkali metals
Intercalation
Electrochemical properties
Metal ions
Temperature

Keywords

  • fluorocarbon
  • interconnected carbon network
  • lithium-ion batteries
  • polyvinylidene fluoride
  • sodium-ion batteries

ASJC Scopus subject areas

  • Materials Science(all)

Cite this

Enhanced Lithium- and Sodium-Ion Storage in an Interconnected Carbon Network Comprising Electronegative Fluorine. / Hong, Seok Min; Etacheri, Vinodkumar; Hong, Chulgi Nathan; Choi, Seung Wan; Lee, Ki Bong; Pol, Vilas G.

In: ACS Applied Materials and Interfaces, Vol. 9, No. 22, 07.06.2017, p. 18790-18798.

Research output: Contribution to journalArticle

Hong, Seok Min ; Etacheri, Vinodkumar ; Hong, Chulgi Nathan ; Choi, Seung Wan ; Lee, Ki Bong ; Pol, Vilas G. / Enhanced Lithium- and Sodium-Ion Storage in an Interconnected Carbon Network Comprising Electronegative Fluorine. In: ACS Applied Materials and Interfaces. 2017 ; Vol. 9, No. 22. pp. 18790-18798.
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