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@ARTICLE{Astakhov:905134,
author = {Astakhov, Oleksandr and Smirnov, Vladimir and Rau, Uwe and
Merdzhanova, Tsvetelina},
title = {{P}rediction of {L}imits of {S}olar‐to‐{H}ydrogen
{E}fficiency from {P}olarization {C}urves of the
{E}lectrochemical {C}ells},
journal = {Solar RRL},
volume = {6},
number = {2},
issn = {2367-198X},
address = {Weinheim},
publisher = {Wiley-VCH},
reportid = {FZJ-2022-00426},
pages = {2100783},
year = {2022},
abstract = {The maximum solar-to-hydrogen efficiency (STH) in directly
coupled photovoltaic-assisted water-splitting systems is
achieved when the photovoltaic (PV) and electrochemical (EC)
devices are power matched precisely. This matching requires
that the polarization curve of the EC device crosses the
current–voltage (IV) characteristics of the PV device at
its maximum power point (MPP). Conversely, each point on the
EC polarization curve can be considered the MPP of a PV
device optimally coupled to the EC device. Therefore, at
each point on the polarization curve, the minimum PV
efficiency and maximum EC efficiency can be calculated for a
specific irradiance. The product of both efficiencies
generates the STH limit that can be attained at that
specific point on the polarization curve. This “reverse
analysis,” carried out with elementary math, does not
involve any modeling or analysis of PV IV characteristics.
Herein, this reverse analysis is described and how it can be
used to quantify losses in PV–EC systems and the effect of
mutual scaling of PV and EC devices is shown. This method is
presented using a NiMo/NiFeOX catalyst pair as an example
and was applied to a variety of PV–EC combinations
described in the literature.},
cin = {IEK-5},
ddc = {600},
cid = {I:(DE-Juel1)IEK-5-20101013},
pnm = {1213 - Cell Design and Development (POF4-121)},
pid = {G:(DE-HGF)POF4-1213},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000726287900001},
doi = {10.1002/solr.202100783},
url = {https://juser.fz-juelich.de/record/905134},
}