Simulations of the irradiation and temperature dependence of the efficiency of tandem photoelectrochemical water-splitting systems

Sophia Haussener, Shu Hu, Chengxiang Xiang, Adam Z. Weber, Nathan S. Lewis

Research output: Contribution to journalArticle

Abstract

The efficiency of an operating photoelectrochemical solar-fuelsgenerator system is determined by the system design, the properties and morphology of the system's components, and the operational conditions. We used a previously developed model comprising of i) the detailed balance limit to describe the currentpotential performance of the photoabsorber component, and ii) the detailed multi-physics device model solving for the governing conservation equations (mass, momentum, species and charge) spatially resolved in the device, to quantify the performance of photoelectrochemical devices. The investigated the performance and its variations as a function of operational conditions, i.e. daily and seasonal irradiation variations, concentration factor of irradiation, and isothermal device temperature. Additionally, the difference in performance of an integrated photoelectrochemical system and a photovoltaic array connected electrically to a standalone electrolyzer system was quantified.

Original languageEnglish
Pages (from-to)293-303
Number of pages11
JournalECS Transactions
Volume58
Issue number2
DOIs
Publication statusPublished - Jan 1 2013

ASJC Scopus subject areas

  • Engineering(all)

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