Analysis of palladium-based anode electrode using electrochemical impedance spectra in direct formic acid fuel cells

Won Suk Jung, Jonghee Han, S. Ha

Research output: Contribution to journalArticle

55 Citations (Scopus)

Abstract

In this study, we used the electrochemical impedance spectra to evaluate the anode performance of direct formic acid fuel cell (DFAFC), and how its anode charge transfer resistance (Ranode,ct) and electrolyte resistance (Rele) are affected by various cell operating parameters. The parameters investigated in this study include the anode overpotentials, cell operation times, formic acid feed concentrations and cell temperatures. The anode impedance spectra demonstrated that the Ranode,ct and Rele are low for the DFAFC using 5 M formic acid feed concentration, which leads to its high power density output of 250 mW cm-2 at 0.35 V and 30 °C. The high performance of the DFAFC demonstrates that it has a great potential for portable power applications. The Ranode,ct increases gradually as either the cell operation time increases or the formic acid feed concentration is raised from 10 to 15 M, which leads to a deactivation of the anode electrode, resulting in reduction of overall cell performance. However, these deactivation processes are reversible and the cell performance can be easily reactivated.

Original languageEnglish
Pages (from-to)53-59
Number of pages7
JournalJournal of Power Sources
Volume173
Issue number1
DOIs
Publication statusPublished - 2007 Nov 8
Externally publishedYes

Fingerprint

Formic acid fuel cells (FAFC)
Electrochemical electrodes
formic acid
Palladium
fuel cells
palladium
Anodes
anodes
impedance
Formic acid
electrodes
cells
deactivation
cell anodes
Electrolytes
Charge transfer
radiant flux density
charge transfer
Electrodes
electrolytes

Keywords

  • Charge transfer resistance
  • Direct formic acid fuel cells
  • Electrolyte resistance
  • Impedance spectroscopy
  • Palladium
  • Portable power

ASJC Scopus subject areas

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

Cite this

Analysis of palladium-based anode electrode using electrochemical impedance spectra in direct formic acid fuel cells. / Jung, Won Suk; Han, Jonghee; Ha, S.

In: Journal of Power Sources, Vol. 173, No. 1, 08.11.2007, p. 53-59.

Research output: Contribution to journalArticle

@article{b580e185a31e436887659605580a2eee,
title = "Analysis of palladium-based anode electrode using electrochemical impedance spectra in direct formic acid fuel cells",
abstract = "In this study, we used the electrochemical impedance spectra to evaluate the anode performance of direct formic acid fuel cell (DFAFC), and how its anode charge transfer resistance (Ranode,ct) and electrolyte resistance (Rele) are affected by various cell operating parameters. The parameters investigated in this study include the anode overpotentials, cell operation times, formic acid feed concentrations and cell temperatures. The anode impedance spectra demonstrated that the Ranode,ct and Rele are low for the DFAFC using 5 M formic acid feed concentration, which leads to its high power density output of 250 mW cm-2 at 0.35 V and 30 °C. The high performance of the DFAFC demonstrates that it has a great potential for portable power applications. The Ranode,ct increases gradually as either the cell operation time increases or the formic acid feed concentration is raised from 10 to 15 M, which leads to a deactivation of the anode electrode, resulting in reduction of overall cell performance. However, these deactivation processes are reversible and the cell performance can be easily reactivated.",
keywords = "Charge transfer resistance, Direct formic acid fuel cells, Electrolyte resistance, Impedance spectroscopy, Palladium, Portable power",
author = "Jung, {Won Suk} and Jonghee Han and S. Ha",
year = "2007",
month = "11",
day = "8",
doi = "10.1016/j.jpowsour.2007.08.023",
language = "English",
volume = "173",
pages = "53--59",
journal = "Journal of Power Sources",
issn = "0378-7753",
publisher = "Elsevier",
number = "1",

}

TY - JOUR

T1 - Analysis of palladium-based anode electrode using electrochemical impedance spectra in direct formic acid fuel cells

AU - Jung, Won Suk

AU - Han, Jonghee

AU - Ha, S.

PY - 2007/11/8

Y1 - 2007/11/8

N2 - In this study, we used the electrochemical impedance spectra to evaluate the anode performance of direct formic acid fuel cell (DFAFC), and how its anode charge transfer resistance (Ranode,ct) and electrolyte resistance (Rele) are affected by various cell operating parameters. The parameters investigated in this study include the anode overpotentials, cell operation times, formic acid feed concentrations and cell temperatures. The anode impedance spectra demonstrated that the Ranode,ct and Rele are low for the DFAFC using 5 M formic acid feed concentration, which leads to its high power density output of 250 mW cm-2 at 0.35 V and 30 °C. The high performance of the DFAFC demonstrates that it has a great potential for portable power applications. The Ranode,ct increases gradually as either the cell operation time increases or the formic acid feed concentration is raised from 10 to 15 M, which leads to a deactivation of the anode electrode, resulting in reduction of overall cell performance. However, these deactivation processes are reversible and the cell performance can be easily reactivated.

AB - In this study, we used the electrochemical impedance spectra to evaluate the anode performance of direct formic acid fuel cell (DFAFC), and how its anode charge transfer resistance (Ranode,ct) and electrolyte resistance (Rele) are affected by various cell operating parameters. The parameters investigated in this study include the anode overpotentials, cell operation times, formic acid feed concentrations and cell temperatures. The anode impedance spectra demonstrated that the Ranode,ct and Rele are low for the DFAFC using 5 M formic acid feed concentration, which leads to its high power density output of 250 mW cm-2 at 0.35 V and 30 °C. The high performance of the DFAFC demonstrates that it has a great potential for portable power applications. The Ranode,ct increases gradually as either the cell operation time increases or the formic acid feed concentration is raised from 10 to 15 M, which leads to a deactivation of the anode electrode, resulting in reduction of overall cell performance. However, these deactivation processes are reversible and the cell performance can be easily reactivated.

KW - Charge transfer resistance

KW - Direct formic acid fuel cells

KW - Electrolyte resistance

KW - Impedance spectroscopy

KW - Palladium

KW - Portable power

UR - http://www.scopus.com/inward/record.url?scp=34848813202&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=34848813202&partnerID=8YFLogxK

U2 - 10.1016/j.jpowsour.2007.08.023

DO - 10.1016/j.jpowsour.2007.08.023

M3 - Article

AN - SCOPUS:34848813202

VL - 173

SP - 53

EP - 59

JO - Journal of Power Sources

JF - Journal of Power Sources

SN - 0378-7753

IS - 1

ER -