000212790 001__ 212790
000212790 005__ 20190331192709.0
000212790 02470 $$2ISI$$a000365412300019
000212790 0247_ $$2doi$$a10.1039/c5ee01821h
000212790 037__ $$aARTICLE
000212790 245__ $$aHolistic design guidelines for solar hydrogen production by photo-electrochemical routes
000212790 269__ $$a2015
000212790 260__ $$c2015
000212790 336__ $$aJournal Articles
000212790 520__ $$aDevice and system design choices for solar energy conversion and storage approaches require holistic design guidelines which simultaneously respect and optimize technical, economic, sustainability, and operating time constraints. We developed a simulation platform which allows for the calculation of solar-to-hydrogen efficiency, hydrogen price, device manufacture and operation energy demand, and the component degradation and replacement time of photo-electrochemical water splitting devices. Utilizing this platform, we assessed 16 different design types representing all possible combinations of a system: i) operating with or without irradiation concentration, ii) utilizing high-performing and highcost or low-performing but low-cost photoabsorbers, iii) utilizing high-performing and high-cost or lowperforming but low-cost electrocatalysts, and iv) operating with or without current concentration between the photoabsorber and the electrocatalyst. Our results show that device types exist with a global optimum (a Pareto point), simultaneously maximizing efficiency, while minimizing cost and the energy demand of manufacture and operation. In our examples, these happen to be the device types utilizing high irradiation concentration, as well as expensive photoabsorbers and electrocatalysts. These device types and designs were the most robust to degradation, exhibiting the smallest price sensitivity for increasing degradation rates. Other device types did not show a global optimum, but rather a set of partially optimized designs, i.e. a Pareto front, requiring a compromise and prioritization of either performance, cost, or manufacture and operation energy demand. In our examples, these happen to be the device types using low-cost photoabsorbers. The targeted utilization of irradiation and current concentration predicted that even device types utilizing expensive components can provide competitive solutions to photo-electrochemical water splitting. The quantification of the influence of component degradation on performance allows the suggestion of best practice for device operational time and component replacement. The framework and findings presented here provide holistic design guidelines for photo-electrochemical devices, and support the decision-making process for an integral and practical approach to competitive solar hydrogen production in the future.
000212790 700__ $$aDumortier, Mikael
000212790 700__ $$0247649$$g236058$$aTembhurne, Saurabh Yuvraj
000212790 700__ $$0247143$$g207354$$aHaussener, Sophia
000212790 773__ $$j8$$tEnergy Environmental Science$$q3614-3628
000212790 8564_ $$uhttps://infoscience.epfl.ch/record/212790/files/Dumortier_etal_PEC_2015_1.pdf$$zn/a$$s4494676$$yn/a
000212790 909C0 $$xU12656$$0252472$$pLRESE
000212790 909CO $$qGLOBAL_SET$$pSTI$$ooai:infoscience.tind.io:212790$$particle
000212790 917Z8 $$x207354
000212790 917Z8 $$x207354
000212790 917Z8 $$x207354
000212790 937__ $$aEPFL-ARTICLE-212790
000212790 973__ $$rREVIEWED$$sPUBLISHED$$aEPFL
000212790 980__ $$aARTICLE