TY - GEN
T1 - Electrode kinetics of perfluorocarbon (PFC) generation
AU - Zhu, Hongmin
AU - Sadoway, Donald R.
PY - 1999
Y1 - 1999
N2 - The kinetics of perfluorocarbon (PFC) generation in the NaF-AlF 3-Al 2O 3 system have been studied by a variety of electroanalytical techniques, including voltammetry, chronoamperometry and chronopotentiometry. Anode gases have been analyzed by gas chromatography on-line during controlled-potential electrolysis in a laboratory-scale aluminum reduction cell. Based upon preliminary results, the following hypothesis is offered in explanation of the mechanism of the anodic process of PFC generation: (1) fluoride ion discharges at potentials exceeding 3.0 V and forms a `CF' film which, in turn, inhibits the electrode process until the potential reaches 6.0 V; (2) CF 4 and C 2F 6 evolution occurs at potentials exceeding 6.0 V. The results of the present study do not indicate that COF 2 is formed during the initial stages of the anode effect.
AB - The kinetics of perfluorocarbon (PFC) generation in the NaF-AlF 3-Al 2O 3 system have been studied by a variety of electroanalytical techniques, including voltammetry, chronoamperometry and chronopotentiometry. Anode gases have been analyzed by gas chromatography on-line during controlled-potential electrolysis in a laboratory-scale aluminum reduction cell. Based upon preliminary results, the following hypothesis is offered in explanation of the mechanism of the anodic process of PFC generation: (1) fluoride ion discharges at potentials exceeding 3.0 V and forms a `CF' film which, in turn, inhibits the electrode process until the potential reaches 6.0 V; (2) CF 4 and C 2F 6 evolution occurs at potentials exceeding 6.0 V. The results of the present study do not indicate that COF 2 is formed during the initial stages of the anode effect.
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M3 - Conference contribution
AN - SCOPUS:0033357278
SN - 9780873394253
T3 - Light Metals: Proceedings of Sessions, TMS Annual Meeting (Warrendale, Pennsylvania)
SP - 241
EP - 246
BT - Light Metals
T2 - Proceedings of the 1999 128th TMS Annual Meeting 'Light Metals 1999'
Y2 - 28 February 1999 through 4 March 1999
ER -