Inorganic Liquid Photovoltaic Cell: Tetravalent Molybdenum in Water

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Science  04 Sep 1970:
Vol. 169, Issue 3949, pp. 980-981
DOI: 10.1126/science.169.3949.980


An inorganic liquid photovoltaic cell is described. The cell is based on the reaction 2Mo4+ ↔ Mo5+ + Mo3+, with pentavalent molybdenum formed in the illuminated half-cell and trivalent molybdenum formed in the dark half-cell. In the photochemical reaction pentavalent molybdenum precipitates. Consequently, the cell has the capability of storing energy.

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