Polarization Losses in Gratzel Solar Cells with a Porous Anode by mmcsx

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									Polarization Losses in Gratzel Solar Cells with a Porous Anode
                        V. G. Gasenko* and V. E. Nakoryakov
          Institute of Thermophysics, Siberian Branch, Russian Academy of Sciences,
                       pr. Akad. Lavrent’eva 1, Novosibirsk, 630090 Russia
                                     Received December 20, 2010

 Abstract—Polarization losses under the redox reaction on the anode and cathode in the iodine
 electrolyte of a Gratzel solar cell are considered. It is shown that the value of the maximum cell
 current is bounded by the diffusion transfer of ions on the cathode or anode, depending on the
 electrolyte composition. It is demonstrated that the value of polarization losses for a nonporous
 anode is determined by a linear Tafel law, whereas for a porous anode it is determined by the
 obtained nonlinear Tafel law that yields half as much polarization loss, according to Zeldovich
 theory. Operating conditions of Gratzel cell with a porous anode of finite thickness, under which
 the nonlinear Tafel law is realized for polarization losses, are considered.

 DOI: 10.1134/S1810232811020019

								
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