Electrode kinetics of perfluorocarbon (PFC) generation

Hongmin Zhu, Donald R. Sadoway

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

23 Citations (Scopus)


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.

Original languageEnglish
Title of host publicationLight Metals
Subtitle of host publicationProceedings of Sessions, TMS Annual Meeting (Warrendale, Pennsylvania)
Number of pages6
Publication statusPublished - 1999
EventProceedings of the 1999 128th TMS Annual Meeting 'Light Metals 1999' - San Diego, CA, USA
Duration: 1999 Feb 281999 Mar 4

Publication series

NameLight Metals: Proceedings of Sessions, TMS Annual Meeting (Warrendale, Pennsylvania)
ISSN (Print)1096-9586


ConferenceProceedings of the 1999 128th TMS Annual Meeting 'Light Metals 1999'
CitySan Diego, CA, USA


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