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Thin film cadmium chalcogenide/aqueous polysulfide photoelectrochemical solar cells with in-situ tin storage

Journal Article · · J. Electrochem. Soc.; (United States)
DOI:https://doi.org/10.1149/1.2100617· OSTI ID:6306791

A photoelectrical system is presented which converts solar energy to both electrical and electrochemically stored energy. A decrease in cell illumination initiates spontaneous reconversion of electrochemical to electrical energy, providing nearly constant (light insensitive) electrical power for an external applied load. The cell contains a thin film CD(Se,Te) photoelectrode and a thin film CoS counterelectrode immersed in an aqueous polysulfide electrolyte separated by cation selective membrane from a tin electrode immersed in an aqueous sulfide electrolyte (Sn/S/sup =/). Cyclic voltammetry indicates that unlike tin/alkali systems, the Sn/S/sup =/ half-cell does not undergo passivation at storage potentials.

Research Organization:
Dept. of Chemistry, Massachusetts Institute of Technology, Cambridge, MA 02139
OSTI ID:
6306791
Journal Information:
J. Electrochem. Soc.; (United States), Journal Name: J. Electrochem. Soc.; (United States) Vol. 135:5; ISSN JESOA
Country of Publication:
United States
Language:
English

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