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Meniscus heights on a gold flag electrode partially submerged in Li/K carbonate (62/38 mole percent) at 650~ have been determined under a variety of O=-CO= gas mixtures at atmospheric pressure. The meniscus height as a function of electrode potential shows a characteristic minimum for each gas composition and a relatively steep increase with increasing cathodic polarization. Analysis of the near-equilibrium data, assuming electrocapillary effects only, shows that this is consistent with specific adsorption of oxide ion on the electrode. At appreciable polarization, mass-transfer effects as well as adsorption appear to play a role, and the approach to steady-state conditions following a disturbance is slow.) unless CC License in place (see abstract). ecsdl.org/site/terms_use address. Redistribution subject to ECS terms of use (see 138.251.14.35 Downloaded on 2015-06-13 to IP

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