The anodic behaviour of tin in sulphuric acid solutions

Timo Laitinen; K. Salmi; Göran Sundholm; P. Viinikka; Arto Yli-Pentti

doi:10.1016/0013-4686(92)85083-W

The anodic behaviour of tin in sulphuric acid solutions

Timo Laitinen, K. Salmi, Göran Sundholm (Corresponding Author), P. Viinikka, Arto Yli-Pentti

VTT Technical Research Centre of Finland

Helsinki University of Technology

Research output: Contribution to journal › Article › Scientific › peer-review

32 Citations (Scopus)

Abstract

The anodic dissolution and partial passivation of tin in 4.5–8 M sulphuric acid solutions has been studied using rotating ring—disk voltammetry. In the region of active dissolution a Tafel slope of 1/(30 ± 3) mV⁻¹ was measured. This value was found to be independent of acid concentration. A reaction mechanism is presented to explain this slope. It was found that tin dissolves both in the active and partly passive potential region in the form of bivalent tin. Oxidation to the tetravalent state seems to occur only at high anodic potentials. Oxygen evolution starts only at potentials above 3 V (vs. Hg₂SO₄/Hg). Analysis of the passivating film formed on the electrode surface using SEM, XRD, XPS and SIMS showed that the film is mainly tin oxide, SnO, mostly in an amorphic form.

Original language	English
Pages (from-to)	1797-1803
Journal	Electrochimica Acta
Volume	37
Issue number	10
DOIs	https://doi.org/10.1016/0013-4686(92)85083-W
Publication status	Published - 1992
MoE publication type	A1 Journal article-refereed

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title = "The anodic behaviour of tin in sulphuric acid solutions",

abstract = "The anodic dissolution and partial passivation of tin in 4.5–8 M sulphuric acid solutions has been studied using rotating ring—disk voltammetry. In the region of active dissolution a Tafel slope of 1/(30 ± 3) mV−1 was measured. This value was found to be independent of acid concentration. A reaction mechanism is presented to explain this slope. It was found that tin dissolves both in the active and partly passive potential region in the form of bivalent tin. Oxidation to the tetravalent state seems to occur only at high anodic potentials. Oxygen evolution starts only at potentials above 3 V (vs. Hg2SO4/Hg). Analysis of the passivating film formed on the electrode surface using SEM, XRD, XPS and SIMS showed that the film is mainly tin oxide, SnO, mostly in an amorphic form.",

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T1 - The anodic behaviour of tin in sulphuric acid solutions

AU - Laitinen, Timo

AU - Salmi, K.

AU - Sundholm, Göran

AU - Viinikka, P.

AU - Yli-Pentti, Arto

PY - 1992

Y1 - 1992

N2 - The anodic dissolution and partial passivation of tin in 4.5–8 M sulphuric acid solutions has been studied using rotating ring—disk voltammetry. In the region of active dissolution a Tafel slope of 1/(30 ± 3) mV−1 was measured. This value was found to be independent of acid concentration. A reaction mechanism is presented to explain this slope. It was found that tin dissolves both in the active and partly passive potential region in the form of bivalent tin. Oxidation to the tetravalent state seems to occur only at high anodic potentials. Oxygen evolution starts only at potentials above 3 V (vs. Hg2SO4/Hg). Analysis of the passivating film formed on the electrode surface using SEM, XRD, XPS and SIMS showed that the film is mainly tin oxide, SnO, mostly in an amorphic form.

AB - The anodic dissolution and partial passivation of tin in 4.5–8 M sulphuric acid solutions has been studied using rotating ring—disk voltammetry. In the region of active dissolution a Tafel slope of 1/(30 ± 3) mV−1 was measured. This value was found to be independent of acid concentration. A reaction mechanism is presented to explain this slope. It was found that tin dissolves both in the active and partly passive potential region in the form of bivalent tin. Oxidation to the tetravalent state seems to occur only at high anodic potentials. Oxygen evolution starts only at potentials above 3 V (vs. Hg2SO4/Hg). Analysis of the passivating film formed on the electrode surface using SEM, XRD, XPS and SIMS showed that the film is mainly tin oxide, SnO, mostly in an amorphic form.

U2 - 10.1016/0013-4686(92)85083-W

DO - 10.1016/0013-4686(92)85083-W

M3 - Article

SN - 0013-4686

VL - 37

SP - 1797

EP - 1803

JO - Electrochimica Acta

JF - Electrochimica Acta

IS - 10

ER -

The anodic behaviour of tin in sulphuric acid solutions

Abstract

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