2004
DOI: 10.1002/ckon.200490028
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Mit Peroxodisulfat zu extremen Potentialdifferenzen — eine 5V‐Monozelle

Abstract: Stichworte: Batterie ⋅ Elektrochemie ⋅ Spannungsreihe Bei der Bearbeitung der elektrochemischen Spannungsreihe und elektrochemischer Zellen tritt bei Schülern fast zwangsläufig die Frage auf, wie sich eine Batterie konstruieren lässt, die eine möglichst hohe Potentialdifferenz aufweist. Falls man versucht, eine solche Batterie zu entwerfen, so stellt sich nach einem Blick in die elektrochemische Spannungsreihe das Lithium als ideales Anodenmaterial heraus (E° = -3,04V) [1]. Das höchste Standardpotential weist … Show more

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Cited by 3 publications
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“…Oxygen and hydrogenperoxide are directly provided at the electrode due to the addition of sodium persulfate and the formation of its decomposition products in aqueous solutions. In contrast to its oxidation potential sodium persulfate does not affect the electrode potential [15].…”
Section: Experiments With ρ-Phenylenediaminementioning
confidence: 87%
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“…Oxygen and hydrogenperoxide are directly provided at the electrode due to the addition of sodium persulfate and the formation of its decomposition products in aqueous solutions. In contrast to its oxidation potential sodium persulfate does not affect the electrode potential [15].…”
Section: Experiments With ρ-Phenylenediaminementioning
confidence: 87%
“…3 cm × 4 cm, carbon/oxygen electrode (according to Oetken et. al [15]), powerful electric motor, multimeter, wires, crocodile clips, silver/silverchlorideelectrode, stand material (if necessary), magnetic stirrer, low voltage power supply (resources cf. [6,7])…”
Section: Methodsmentioning
confidence: 99%
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