Photoelectrochemical cells using metal oxide ceramic membranes

Details Photoelectrochemical cells using metal oxide ceramic membranes Photoelectrochemical cells using metal oxide ceramic membranes

H - Electricity

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345/25

H01M 14/00 (2006.01) C25B 5/00 (2006.01) H01G 9/20 (2006.01) H01L 31/00 (2006.01)

Patent

CA 2020170

PHOTOELECTROCHEMICAL CELLS USING METAL OXIDE CERAMIC MEMBRANES Abstract of the Disclosure A photoelectrochemical cell is made from a pair of electrodes placed in an ionic salt solution. The photoresponsive electrode is metal oxide semiconducting ceramic membrane. The advantageous porosity, and thus increased surface area, of the membrane make a solar cell of this design more efficient due to the larger contact area between the metal and the ionic solution than crystalline electrodes. Such titanium dioxide membranes are also transparent which allows for the stacking of electrodes of cells, including electrodes designed to absorb radiation at different wavelength to again increase overall efficiency of light absorption. Dyes can be added to the membrane to archive absorption of light at desired bandwidths. A dopant, such as niobium, can be added to a titanium oxide membrane to increase conductivity without any accompanying loss of conductivity.

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