Abstract
The degradation and rejuvenation of the oxygen evolution reaction (OER) on nickel electrodes in 1 mole dm-3 KOH solution were studied by electrochemical techniques, especially by an impedence method using the first Fourier transform (FFT) which is able to measure the frequency-dispersion for the time-dependence of the reaction because of its short measuring time. The impedance behaviour for the OER was well explained by equivalent circuits for the low and the high overpotential regions, respectively. OER rejuvenation by anodization at 0.6 V was pursued by the capacitance component of the equivalent circuit for the high overpotential region. This rejuvenation by anodization was assumed to produce a transformation of oxide layers corresponding to the capacitance component and also grow poorly conductive oxide films.
| Original language | English |
|---|---|
| Pages (from-to) | 677-681 |
| Number of pages | 5 |
| Journal | Electrochimica Acta |
| Volume | 29 |
| Issue number | 5 |
| DOIs | |
| Publication status | Published - 1984 |
Fingerprint
ASJC Scopus subject areas
- Chemical Engineering(all)
- Analytical Chemistry
- Electrochemistry
Cite this
A study on time-dependence of the oxygen evolution reaction on nickel by FFT impedance measurement. / Osaka, Tetsuya; Yatsuda, Yuji.
In: Electrochimica Acta, Vol. 29, No. 5, 1984, p. 677-681.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - A study on time-dependence of the oxygen evolution reaction on nickel by FFT impedance measurement
AU - Osaka, Tetsuya
AU - Yatsuda, Yuji
PY - 1984
Y1 - 1984
N2 - The degradation and rejuvenation of the oxygen evolution reaction (OER) on nickel electrodes in 1 mole dm-3 KOH solution were studied by electrochemical techniques, especially by an impedence method using the first Fourier transform (FFT) which is able to measure the frequency-dispersion for the time-dependence of the reaction because of its short measuring time. The impedance behaviour for the OER was well explained by equivalent circuits for the low and the high overpotential regions, respectively. OER rejuvenation by anodization at 0.6 V was pursued by the capacitance component of the equivalent circuit for the high overpotential region. This rejuvenation by anodization was assumed to produce a transformation of oxide layers corresponding to the capacitance component and also grow poorly conductive oxide films.
AB - The degradation and rejuvenation of the oxygen evolution reaction (OER) on nickel electrodes in 1 mole dm-3 KOH solution were studied by electrochemical techniques, especially by an impedence method using the first Fourier transform (FFT) which is able to measure the frequency-dispersion for the time-dependence of the reaction because of its short measuring time. The impedance behaviour for the OER was well explained by equivalent circuits for the low and the high overpotential regions, respectively. OER rejuvenation by anodization at 0.6 V was pursued by the capacitance component of the equivalent circuit for the high overpotential region. This rejuvenation by anodization was assumed to produce a transformation of oxide layers corresponding to the capacitance component and also grow poorly conductive oxide films.
UR - http://www.scopus.com/inward/record.url?scp=0021426830&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0021426830&partnerID=8YFLogxK
U2 - 10.1016/0013-4686(84)87127-3
DO - 10.1016/0013-4686(84)87127-3
M3 - Article
AN - SCOPUS:0021426830
VL - 29
SP - 677
EP - 681
JO - Electrochimica Acta
JF - Electrochimica Acta
SN - 0013-4686
IS - 5
ER -