Water photoelectrolysis cell

Varghese, OK Grimes, CA (2007) Appropriate Strategies For Determining The Photoconversion Efficiency Of Water Photoelectrolysis Cells A Review With Examples Using Titania Nanotuhe Array Photoanodes. Solar Energy Materials and Solar Cells, in press. 

Hydrogen peroxide has also been detected after prolonged operation of water photoelectrolysis cells including a Ti02 photoanode and a Pt cathode The H2O2 formation at the photoanode has been proposed to account for the observed volume ratio of the evolved oxygen to hydrogen lower than However, this explanation... 

Fig. 7. Energy diagram of a water photoelectrolysis cell a - in the dark, b - in the light.

Varghese OK, Grimes CA (2008) Appropriate strategies for determining the photoconversion efficiency of water photoelectrolysis cells a review with examples using titania nanotube array photoanodes. Sol Energy Mater Sol Cells 92(4) 374-384... 

Mavroides JG, Tchemev DI, Kafalas JA, Kolesar DP (1975) Photoelectrolysis of water in cells with Ti02 anodes. Mater Res Bull 10 1023-1030... 

Fujishima and Honda [16, 158] reported the photodecomposition of water using semiconductor photoelectrolysis cells (Figure 4.10). When the surface of the Ti02 electrode was irradiated with UV light, oxygen evolution was observed at the Ti02 electrode surface and hydrogen at the Pt black electrode. The overall water photodecomposition reaction ... 

Similar results of photoelectrolysis of water in cells with n-type SrTi03 single-crystal anode and platinized Pt cathode were reported around the same time in a preliminary communication by Mavroides et al. [53] who measured the maximum quantum efficiency... 

Mavroides, G., Kafalas, J.A., and Kolesar, D.F., Photoelectrolysis of water in cells with SrTiOs anodes, Appl. Phys. Lett., 28,241,1976. 

Fig. 3.4b Illustration of the operating principle of a photoelectrochemical cell producing hydrogen and oxygen during water photoelectrolysis.

Fig. 3.15 Energy diagram of semiconductor-metal photoelectrolysis cell, (a) No contact and no chemical potential equilibrium (b) galvanic contact in dark (c) effect of light illumination (d) effect of light illumination with bias, (e) Light illumination without bias, however in this case the semiconductor band edges straddle the redox potential for water photoelectrolysis.

Fig. 3.16 Energy diagram of semiconductor-metal photoelectrolysis cell with light illumination without bias, however in this case the semiconductor band edges straddle the redox potential for water photoelectrolysis.

Photoelectrolysis of water in cells with SrTiOs anodes. Apl Phys Lett 28 241-243... 

Kainthala RC, Zelenay B, Bockris JOM (1987) Significant efficiency increase in self-driven photoelectrochemical cell for water photoelectrolysis. J Electrochem Soc 134 841-845... 

Fujishima A, Honda K (1972) Electrochemical photolysis of water at a semiconductor electrode. Nature 238 37-38 Nozik AJ (1976) p-n photoelectrolysis cell. Appl Phys Lett 29 150-153... 

Figure 5.1.7, including variations of the dye-sensitized solar cells originally proposed by Gratzel [55] and expected for use in combination with hematite (a-Fe203) photoelectrode material for producing H2/O2 by water photoelectrolysis [56],... 

Figure 5.1.9 PEC solar cell. Bottom scheme of the cell with electron microscopy images of a particular of the Ti02-nanotube array electrode and of the Fe nanoparticles on N-doped carbon nanotubes, used as a photocatalyst for water oxidation and an electrocatalyst for CO2 reduction, respectively. It is also shown that it may be possible to use this cell for the production of H2/O2 in separate compartments by water photoelectrolysis. Top photo of the experimental cell and of the assembly of the photoanode with the Nafion membrane. Adapted from [14, 40, 52],...

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