Abstract
Texas Instruments' solar energy system contains a solar‐chemical converter (SCC) which converts solar energy into chemical energy via the electrolysis of hydrobromic acid into hydrogen and bromine . Previous predictions of SCC performance have employed electrical dry‐probe data and a computer simulation model to predict the generation rates. The method of prediction described here makes use of the photoelectrochemical I‐V curves to determine the “wet”‐probe parameters of , , FF, and efficiency for anodes and cathodes. The advantages of this technique over the dry‐probe/computer simulation method are discussed. A comparison of predicted and measured generation rates is presented. Solar to chemical efficiencies of 8.6% have been both predicted and measured for the electrolysis of 48% to hydrogen and bromine by a full anode/cathode array. Individual cathode solar to hydrogen efficiencies of 9.5% have been obtained.
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