Elektrochemisches verhalten anodisch hergestellter oxidschichten auf platin

Nagel, Kurt; Dietz, H.

doi:10.1016/0013-4686(61)80001-7

Cited by 22 publications

(7 citation statements)

References 16 publications

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“…Films corresponding to about 10 mC/cm 2 have been reported on Pt anodized in M KOH, in a somewhat obscurely presented Russian paper (36). Other voltammetric studies where phase oxides were certainly involved include those of Fleischmann et al (5) and Nagel and Dietz (22).…”

Section: Resultsmentioning

confidence: 96%

“…After k9, the much milder treatment of o8, where the potential was between 2.20 and 2.15V for only 5 rain, gave a sharp second peak in the cathodic voltammogram with Q2 = 2.4 mC/cmL Apart from the great hysteresis in oxidizability evident in Table Ia, it is obvious that the magnitude of the anode potential, provided it exceeds a certain minimum value of about 2.15V, RHE, has a relatively minor influence on second oxide formation. A hysteresis in the anodic oxidizability of Pt was briefly alluded to by Nagel and Dietz (22). They noted that during a sequence of electrolytic oxidations and reductions the anodizing time required to form a brown layer of phase oxide fell from 15 hr to 1 hr and ascribed this behavior to a gradual loosening ("Auflockerung") of the metal surface.…”

Section: Hysteresis In Oxidizability (Second Oxide)mentioning

confidence: 99%

“…Many studies have shown the important influence of the state of surface oxidation on the electrode kinetics of inorganic (14) and organic (15) reactants at Pt. Somewhat more graphic evidence for the macroscopic oxidation of Pt anodes has been accumulated in various corrosion investigations (16)(17)(18)(19)(20)(21)(22)(23)(24)(25)(26)(27)(28).…”

mentioning

confidence: 99%

“…Manuscript submitted Feb. 13, 1969; revised manuscript received July 3, 1969. This paper was presented at the 19th Meeting of CITCE, Detroit, Sept. [22][23][24][25][26][27] 1968. This work was based on data obtained at Brookhaven National Laboratory, Upton, New York, in work done under the Auspices of the United States Atomic Energy Commission.…”

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confidence: 99%

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Multilayer Oxide Films on Anodized Platinum

James¹

1969

J. Electrochem. Soc.

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A voltammetric study is described of conditions governing the production and stability of anodically formed bulk oxide on Pt in dilute H2SO4. The range of anodizing conditions covered in 1 or 2N H2SO4 was: current-density, up to 10 A/cm2; temperature, 11~176 duration, up to 18 hr. The oxidizability of the Pt anode (with respect to formation of bulk oxide) was subject to considerable hysteresis. Provided a potential of about 2.15V, RHE was exceeded, electrode oxidizability seemed to be controlled largely by the amount of strain energy present in the Pt surface. The electrolytic formation and reduction of thick bulk oxide layers effected large increases in electrode roughness factor (up to 100X or more). Superficial, monolayer-type oxide films on platinum electrodes which have been anodized in aqueous solution are very well known although far from completely characterized. The literature on this type of film which is rapidly reduced at about 0.TV, RHE has recently received thorough reviews (1).In addition, a number of facts indicate that, as the potential or current-density of the anodization is raised, qualitative changes occur in the nature of this film. For instance several workers (2-5) have found sharp changes of slope at about 1.SV, NHE in H2SO4 or HC104 for plots of Q (mC/cm 2) vs. E (Q is the charge re-

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Section: Resultsmentioning

confidence: 96%

Section: Hysteresis In Oxidizability (Second Oxide)mentioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

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Multilayer Oxide Films on Anodized Platinum

James¹

1969

J. Electrochem. Soc.

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“…E1 Wakkad (20) reports that the potential of a Pt/PtO couple is about 0.88v in acid solution. Since this oxide layer is an electronic conductor (22), additional layers can be formed only under extreme conditions (25). However, Latimer (11) and others (24) report a value of 0.98v for a Pt/Pt(OH)~ couple in acid solution which is based on thermochemical data obtained from a chemically prepared compound.…”

Section: The Platinum-platinum Oxide Couples--anothermentioning

confidence: 99%

Rest Potentials in the Platinum-Oxygen-Acid System

Hoare

1962

J. Electrochem. Soc.

105

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The rest potential of a platinum bead electrode in oxygen-stirred acid solution was investigated as a function of the pH, the partial pressure of oxygen, and the history of electrode preparation. It is believed that the theoretical equilibrium oxygen potential, +1.229v vs. N.H.E., cannot be obtained in any ) unless CC License in place (see abstract). ecsdl.org/site/terms_use address. Redistribution subject to ECS terms of use (see 131.215.225.9 Downloaded on 2015-05-28 to IP Vol. 109, No. 9 REST POTENTIALS bottom of each inlet tube is placed a ball of platinum gauze to break the gas stream into fine bubbles. Finally, a small hole, through which a thin platinum wire may be inserted as a pre-electrolysis electrode, is made in each top. ) unless CC License in place (see abstract). ecsdl.org/site/terms_use address. Redistribution subject to ECS terms of use (see 131.215.225.9 Downloaded on 2015-05-28 to IP ) unless CC License in place (see abstract). ecsdl.org/site/terms_use address. Redistribution subject to ECS terms of use (see 131.215.225.9 Downloaded on 2015-05-28 to IP Vol. 109, No. 9 REST POTENTIALS IN Pt-O-ACID SYSTEM 865When these substances are present the system becomes more reversible.

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Electrochemistry of Hydrous Oxide Films

Burke

Lyons

1986

Reviews of Physiology, Biochemistry and Pharmacology

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Elektrochemisches verhalten anodisch hergestellter oxidschichten auf platin

Cited by 22 publications

References 16 publications

Multilayer Oxide Films on Anodized Platinum

Multilayer Oxide Films on Anodized Platinum

Rest Potentials in the Platinum-Oxygen-Acid System

Electrochemistry of Hydrous Oxide Films

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