Saur Viddyut Kosh. IV - Study of a rechargeable solar battery with n-Pb3O4 electrodes
Abstract
The design, fabrication, and performance of a rechargeable solar battery with storage capability (a Saur Viddyut Kosh, SVK) are reported. Electrodes of n-Pb3O4 are produced by thermal decomposition of lead citrate in O2 for 2 h at 350 C and sintering of 2-mm-thick 1-cm-diameter pellets in H2 for 2 h at 300 C and characterized photolectrochemically using various redox couples. Using the couple 0.1 M Fe(3+)/saturated Fe(2+), photocurrent density 175.2 microA/sq cm, bandgap 2.0 eV at wavelength 575 nm, flat-band potential -310 mV, fill factor 38 percent, and power efficiency 0.09 percent are determined. An SVK using the same redox pair in one compartment and 0.1 M IO3(-)/0.1 M I(-) in the other is constructed and found to have charged dark potential (after 1 h) 840 mV, current density 408.0 microA/sq cm, output voltage 93 mV, and SHE flat-band potential -170 mV (in contrast with the -290 mV calculated by Butler and Ginley, 1978). The electrode is found to become photoelectrochemically unstable after about 12 h if the Fe(3+)/Fe(2+) concentrations are maintained.
- Publication:
-
Solar Cells
- Pub Date:
- September 1984
- Bibcode:
- 1984SoCe...12..353S
- Keywords:
-
- Charge Efficiency;
- Electrodes;
- Lead Oxides;
- Photoelectrochemical Devices;
- Solar Cells;
- Storage Batteries;
- Current Density;
- Electric Energy Storage;
- Energy Gaps (Solid State);
- Power Efficiency;
- Solar Energy Conversion;
- Volt-Ampere Characteristics;
- Energy Production and Conversion