Electrochemical properties and cycle performance of electrospun poly(vinylidene fluoride)-based fibrous membrane electrolytes for Li-ion polymer battery

Sung Woo Lee, Sung Won Choi, Seong Mu Jo, Byung Doo Chin, Dong Young Kim, Kwan Young Lee

Research output: Contribution to journalArticle

87 Citations (Scopus)

Abstract

Prototype cells were prepared by hot pressing of the cathode and the anode coated with poly(vinylidenefluoride-hexafluoropropylene) P(VdF-HFP) and poly(vinylidene fluoride) PVdF-based fibrous membranes, respectively. Electrochemical properties and cycle performance of them before and after hot pressing were investigated. Pressing of the fibrous membrane resulted in decrease of the apparent porosity and electrolyte uptake. The prototype cell using hot-pressed membrane electrolyte showed continuous fading of the capacity while that using non-pressing fibrous membrane almost retained the initial capacity after 100 cycles at room temperature (0.5 C rate). In the case of cycle test at 80 °C, however, the capacity was slightly decreased after the initial capacity fading of about 6.5% during the first 10 cycles due to the evaporation of liquid electrolytes. Rate performance exhibited about 97% and 72% of the full capacity at the 1 C rate and 2 C rate, respectively. The capacities at 5 C rate and 10 C rate were about 27-28% of the full capacity similarly because of the reduction of the entrapped liquid phase due to the swell of the fibrous structure.

Original languageEnglish
Pages (from-to)41-46
Number of pages6
JournalJournal of Power Sources
Volume163
Issue number1 SPEC. ISS.
DOIs
Publication statusPublished - 2006 Dec 7

Fingerprint

Fibrous membranes
vinylidene
Electrochemical properties
Electrolytes
fluorides
electric batteries
Polymers
electrolytes
Hot pressing
Ions
membranes
cycles
polymers
ions
Liquids
hot pressing
fading
Anodes
Evaporation
Cathodes

Keywords

  • Electrospinning
  • Fibrous membrane electrolyte
  • Lithium ion polymer battery
  • poly(vinylidene fluoride)

ASJC Scopus subject areas

  • Electrochemistry
  • Fuel Technology
  • Materials Chemistry
  • Electrical and Electronic Engineering
  • Energy Engineering and Power Technology
  • Renewable Energy, Sustainability and the Environment
  • Physical and Theoretical Chemistry

Cite this

Electrochemical properties and cycle performance of electrospun poly(vinylidene fluoride)-based fibrous membrane electrolytes for Li-ion polymer battery. / Lee, Sung Woo; Choi, Sung Won; Jo, Seong Mu; Chin, Byung Doo; Kim, Dong Young; Lee, Kwan Young.

In: Journal of Power Sources, Vol. 163, No. 1 SPEC. ISS., 07.12.2006, p. 41-46.

Research output: Contribution to journalArticle

Lee, Sung Woo ; Choi, Sung Won ; Jo, Seong Mu ; Chin, Byung Doo ; Kim, Dong Young ; Lee, Kwan Young. / Electrochemical properties and cycle performance of electrospun poly(vinylidene fluoride)-based fibrous membrane electrolytes for Li-ion polymer battery. In: Journal of Power Sources. 2006 ; Vol. 163, No. 1 SPEC. ISS. pp. 41-46.
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