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Volatile products of electrode reactions in inorganic electrolyte

Flüchtige Produkte bei Elektrodenreaktionen in anorganischen Elektrolyten
: Hambitzer, G.; Joos, M.; Schriever, U.

Journal of power sources 43/44 (1994), S.727-732
ISSN: 0378-7753
International Meeting on Lithium Batteries <6, 1992, Münster>
Fraunhofer ICT ()
DEMS; DEMS apparatus; differential electrochemical mass spectrometry; electrochemical reaction; gaseous product; high concentrated solution; inorganic electrolyte

The investigation technique differential electrochemical mass spectrometry (DEMS) combines cyclic voltammetry with mass spectrometry. DEMS measurements enables to detect online gaseous products formed by electrochemical reactions. A new, simplified experimental set-up is presented, which allows to expand this method to high concentrated electrolyte solutions. For inorganic electrolyte, elaborated for a rechargeable Li/LiCoO2 battery system, the usually DEMS cell is improved as compact thin-layer flow cell. Chlorine evolution - substantial for overcharge protection in this battery system - is examined at Ni and Au electrodes.