Effect of binder materials on cycling performance of Fe 2O 3 electrodes in alkaline solution

Hiroki Kitamura, Liwei Zhao, Bui Thi Hang, Shigeto Okada, Jun Ichi Yamaki

Research output: Contribution to journalArticle

18 Citations (Scopus)

Abstract

To investigate the effects of binder materials on the electrochemical properties of Fe 2O 3 electrodes in alkaline solution, four different materials were applied as binders: polytetrafluoroethylene (PTFE), polyvinylidene fluoride (PVDF), polyethelene (PE), and poly tetrafluoroethylene- co-vinylidene (P(TFE-VDF)). In KOH aqueous solutions, electrodes containing different binders showed quite different properties. The PE-containing electrode showed the highest capacity retention up to 14 cycles (330 mAh g -1, 82.7%). However, capacity fading was observed subsequently, and only 24.6% capacity remained after 30 cycles. In contrast, the PTFE-containing electrode showed continuous capacity fading but the best capacity retention of 38.6% after 30 cycles. Comparing the amount of dropout Fe 2O 3 from electrodes after charge/discharge measurements, it was reasonable to find that the electrodes with better cycling performance showed less Fe 2O 3 dropout. When K 2S additives were applied, both the electrodes fabricated with PTFE and PE showed superior cycling performance, which was attributed to the good stability of PTFE and PE binders. However, when the effect of the K 2S additive on the Fe 2O 3 dropout was studied with PTFE-containing electrodes, heavier Fe 2O 3 dropout was observed in the K 2S-added electrolyte. This indicated that Fe 2O 3 dropout was not a dominant factor for the capacity fading of the electrodes.

Original languageEnglish
Pages (from-to)391-396
Number of pages6
JournalJournal of Power Sources
Volume208
DOIs
Publication statusPublished - Jun 15 2012

Fingerprint

binders (materials)
Binders
polytetrafluoroethylene
dropouts
Polytetrafluoroethylene
Polytetrafluoroethylenes
cycles
Electrodes
electrodes
fading
vinylidene
Electrochemical properties
Electrolytes
fluorides
electrolytes

All Science Journal Classification (ASJC) codes

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

Cite this

Effect of binder materials on cycling performance of Fe 2O 3 electrodes in alkaline solution. / Kitamura, Hiroki; Zhao, Liwei; Hang, Bui Thi; Okada, Shigeto; Yamaki, Jun Ichi.

In: Journal of Power Sources, Vol. 208, 15.06.2012, p. 391-396.

Research output: Contribution to journalArticle

Kitamura, Hiroki ; Zhao, Liwei ; Hang, Bui Thi ; Okada, Shigeto ; Yamaki, Jun Ichi. / Effect of binder materials on cycling performance of Fe 2O 3 electrodes in alkaline solution. In: Journal of Power Sources. 2012 ; Vol. 208. pp. 391-396.
@article{803558b4ad3b40a68c5a3537bd82bde0,
title = "Effect of binder materials on cycling performance of Fe 2O 3 electrodes in alkaline solution",
abstract = "To investigate the effects of binder materials on the electrochemical properties of Fe 2O 3 electrodes in alkaline solution, four different materials were applied as binders: polytetrafluoroethylene (PTFE), polyvinylidene fluoride (PVDF), polyethelene (PE), and poly tetrafluoroethylene- co-vinylidene (P(TFE-VDF)). In KOH aqueous solutions, electrodes containing different binders showed quite different properties. The PE-containing electrode showed the highest capacity retention up to 14 cycles (330 mAh g -1, 82.7{\%}). However, capacity fading was observed subsequently, and only 24.6{\%} capacity remained after 30 cycles. In contrast, the PTFE-containing electrode showed continuous capacity fading but the best capacity retention of 38.6{\%} after 30 cycles. Comparing the amount of dropout Fe 2O 3 from electrodes after charge/discharge measurements, it was reasonable to find that the electrodes with better cycling performance showed less Fe 2O 3 dropout. When K 2S additives were applied, both the electrodes fabricated with PTFE and PE showed superior cycling performance, which was attributed to the good stability of PTFE and PE binders. However, when the effect of the K 2S additive on the Fe 2O 3 dropout was studied with PTFE-containing electrodes, heavier Fe 2O 3 dropout was observed in the K 2S-added electrolyte. This indicated that Fe 2O 3 dropout was not a dominant factor for the capacity fading of the electrodes.",
author = "Hiroki Kitamura and Liwei Zhao and Hang, {Bui Thi} and Shigeto Okada and Yamaki, {Jun Ichi}",
year = "2012",
month = "6",
day = "15",
doi = "10.1016/j.jpowsour.2012.02.051",
language = "English",
volume = "208",
pages = "391--396",
journal = "Journal of Power Sources",
issn = "0378-7753",
publisher = "Elsevier",

}

TY - JOUR

T1 - Effect of binder materials on cycling performance of Fe 2O 3 electrodes in alkaline solution

AU - Kitamura, Hiroki

AU - Zhao, Liwei

AU - Hang, Bui Thi

AU - Okada, Shigeto

AU - Yamaki, Jun Ichi

PY - 2012/6/15

Y1 - 2012/6/15

N2 - To investigate the effects of binder materials on the electrochemical properties of Fe 2O 3 electrodes in alkaline solution, four different materials were applied as binders: polytetrafluoroethylene (PTFE), polyvinylidene fluoride (PVDF), polyethelene (PE), and poly tetrafluoroethylene- co-vinylidene (P(TFE-VDF)). In KOH aqueous solutions, electrodes containing different binders showed quite different properties. The PE-containing electrode showed the highest capacity retention up to 14 cycles (330 mAh g -1, 82.7%). However, capacity fading was observed subsequently, and only 24.6% capacity remained after 30 cycles. In contrast, the PTFE-containing electrode showed continuous capacity fading but the best capacity retention of 38.6% after 30 cycles. Comparing the amount of dropout Fe 2O 3 from electrodes after charge/discharge measurements, it was reasonable to find that the electrodes with better cycling performance showed less Fe 2O 3 dropout. When K 2S additives were applied, both the electrodes fabricated with PTFE and PE showed superior cycling performance, which was attributed to the good stability of PTFE and PE binders. However, when the effect of the K 2S additive on the Fe 2O 3 dropout was studied with PTFE-containing electrodes, heavier Fe 2O 3 dropout was observed in the K 2S-added electrolyte. This indicated that Fe 2O 3 dropout was not a dominant factor for the capacity fading of the electrodes.

AB - To investigate the effects of binder materials on the electrochemical properties of Fe 2O 3 electrodes in alkaline solution, four different materials were applied as binders: polytetrafluoroethylene (PTFE), polyvinylidene fluoride (PVDF), polyethelene (PE), and poly tetrafluoroethylene- co-vinylidene (P(TFE-VDF)). In KOH aqueous solutions, electrodes containing different binders showed quite different properties. The PE-containing electrode showed the highest capacity retention up to 14 cycles (330 mAh g -1, 82.7%). However, capacity fading was observed subsequently, and only 24.6% capacity remained after 30 cycles. In contrast, the PTFE-containing electrode showed continuous capacity fading but the best capacity retention of 38.6% after 30 cycles. Comparing the amount of dropout Fe 2O 3 from electrodes after charge/discharge measurements, it was reasonable to find that the electrodes with better cycling performance showed less Fe 2O 3 dropout. When K 2S additives were applied, both the electrodes fabricated with PTFE and PE showed superior cycling performance, which was attributed to the good stability of PTFE and PE binders. However, when the effect of the K 2S additive on the Fe 2O 3 dropout was studied with PTFE-containing electrodes, heavier Fe 2O 3 dropout was observed in the K 2S-added electrolyte. This indicated that Fe 2O 3 dropout was not a dominant factor for the capacity fading of the electrodes.

UR - http://www.scopus.com/inward/record.url?scp=84858732859&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84858732859&partnerID=8YFLogxK

U2 - 10.1016/j.jpowsour.2012.02.051

DO - 10.1016/j.jpowsour.2012.02.051

M3 - Article

VL - 208

SP - 391

EP - 396

JO - Journal of Power Sources

JF - Journal of Power Sources

SN - 0378-7753

ER -