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Solar water splitting under natural concentrated sunlight using a 200 cm2 photoelectrochemical-photovoltaic device

Vilanova, António and Dias, Paula and Azevedo, Joao and Wullenkord, Michael and Spenke, Carsten and Lopes, Tânia and Mendes, Adélio (2020) Solar water splitting under natural concentrated sunlight using a 200 cm2 photoelectrochemical-photovoltaic device. Journal of Power Sources, 454, pp. 1-13. Elsevier. DOI: 10.1016/j.jpowsour.2020.227890 ISSN 0378-7753

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Official URL: https://www.sciencedirect.com/science/article/abs/pii/S0378775320301932?via%3Dihub

Abstract

This work reports a 200 cm2 PEC-PV device that comprises four 50 cm2 PEC cells coupled in a modular array and optimized for continuous operation under concentrated sunlight. The developed module is the second largest PEC-PV device ever reported and the first tested under natural concentrated sunlight (up to 12.8 kW m 2). Demonstration tests were conducted outdoor in a continuous operation mode, over four days and using highly stable hematite photoelectrodes. When assembled with four multi-PE windows, each comprising eight small nanostructured photoelectrodes connected in parallel, the module generated a stable current density of ca. 2.0 mA cm 2 at 1.45 V, resulting in an average hydrogen production rate of 5.6 � 10 5 gH2 h 1 cm 2 (based on the net active area). A maximum current density of ca. 4.0 mA cm 2 was reached during J-V measurements (before the dark current onset potential). It was observed that when hematite photoelectrodes are subjected to gradually higher solar irradiances the generated photocurrent follows a logarithmic saturation behaviour. This work provides important insights for demonstrating the viability of solar-driven water electrolysis by presenting a PECPV device that answers to the main challenges of large-scale photoelectrochemical hydrogen production.

Item URL in elib:https://elib.dlr.de/134329/
Document Type:Article
Title:Solar water splitting under natural concentrated sunlight using a 200 cm2 photoelectrochemical-photovoltaic device
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Vilanova, AntónioLEPABEUNSPECIFIED
Dias, PaulaLEPABEUNSPECIFIED
Azevedo, JoaoLEPABEUNSPECIFIED
Wullenkord, MichaelMichael.Wullenkord (at) dlr.dehttps://orcid.org/0000-0002-6262-384X
Spenke, Carstencarsten.spenke (at) dlr.deUNSPECIFIED
Lopes, TâniaLEPABEUNSPECIFIED
Mendes, AdélioLEPABEUNSPECIFIED
Date:27 February 2020
Journal or Publication Title:Journal of Power Sources
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:454
DOI :10.1016/j.jpowsour.2020.227890
Page Range:pp. 1-13
Publisher:Elsevier
ISSN:0378-7753
Status:Published
Keywords:Photoelectrochemical cell, Solar water splitting, Solar concentrator, Large-area device, Hematite photoelectrode
HGF - Research field:Energy
HGF - Program:Renewable Energies
HGF - Program Themes:Solar Fuels
DLR - Research area:Energy
DLR - Program:E SW - Solar and Wind Energy
DLR - Research theme (Project):E - Solar Fuels
Location: Jülich , Köln-Porz
Institutes and Institutions:Institute of Solar Research > Solar Chemical Engineering
Deposited By: Sattler, Prof. Dr. Christian
Deposited On:05 Mar 2020 13:06
Last Modified:05 Mar 2020 13:06

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