Electrocatalytic Electrodes for the Polysulfide Redox System

Gary Hodes, Joost Manassen, David Cahen

Research output: Contribution to journalArticlepeer-review

335 Scopus citations

Abstract

Porous electrocatalytic electrodes for the polysulfide redox system, containing one of various metallic sulfides (especially of Co, Cu, Pb) are described. Emphasis is placed on their use as counterelectrodes in photoelectrochemical cells employing polysulfide electrolytes. Their activity is measured as a function of electrolyte temperature and composition. The ratio of S to S2−, and through it the local redox potential of the solution, is shown to be an important factor controlling electrode activity. The short and long term stability of the electrodes, as cathodes, is discussed, and it is shown that, when used in conjunction with photoanodes, CU2S and CoS may poison the photoelectrode surface, thereby reducing total cell efficiency.

Original languageEnglish
Pages (from-to)544-549
Number of pages6
JournalJournal of the Electrochemical Society
Volume127
Issue number3
DOIs
StatePublished - 1980
Externally publishedYes

Keywords

  • electrodeposition
  • energy conversion
  • photoelectrochemistry
  • sulfidation

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