Please use this identifier to cite or link to this item:
https://hdl.handle.net/10216/103022
Author(s): | Paula Dias Tânia Lopes Luísa Andrade Adélio Mendes |
Title: | Temperature effect on water splitting using a Si-doped hematite photoanode |
Issue Date: | 2014 |
Abstract: | The influence of temperature on the performance of a photoelectrochemical (PEC) cell prepared with Sidoped hematite photoanode was studied for water splitting. The cell performance was characterized byphotocurrent-voltage (JeV) characteristic curves and electrochemical impedance spectroscopy atdifferent cell operating temperatures, from 25 C to 65 C. A standard three-electrode configurationcomprehending the photoelectrode of hematite, the counter-electrode of pure platinum wire (99.9%) andthe reference electrode of Ag/AgCl/Sat.KCl was used. The identification of possible degradation pathwayswas addressed. It was observed that the generated photocurrent density increased with temperature.However, the photoelectrode became unstable above 50 C. The experiments performed concerning thestudy of the temperature effect and the aging showed that the optimal operation temperature of the PECcell is ca. 45 C; this temperature ensures simultaneously the highest photocurrent density and stability.This study is important for understanding the behavior of hematite photoelectrodes operating under realoutdoor conditions. |
Subject: | Engenharia química, Engenharia química Chemical engineering, Chemical engineering |
Scientific areas: | Ciências da engenharia e tecnologias::Engenharia química Engineering and technology::Chemical engineering |
URI: | https://hdl.handle.net/10216/103022 |
Related Information: | info:eu-repo/grantAgreement/COMISSÃO EUROPEIA/7.º Programa-Quadro de IDT/227179 /Nanostructured photoelectrodes for energy conversion/NanoPEC info:eu-repo/grantAgreement/FCT - Fundação para a Ciência e Tecnologia/Projectos de I&DT em Todos os Domínios Científicos/PTDC/EQU-EQU/107990/2008/Células fotoelectroquímicas para produção de hidrogénio a partir de energia solar/H2Solar info:eu-repo/grantAgreement/COMISSÃO EUROPEIA/7.º Programa-Quadro de IDT/321315/Building Integrated Dye Sensitized Solar Cells/BI-DSC |
Document Type: | Artigo em Revista Científica Internacional |
Rights: | restrictedAccess |
Appears in Collections: | FEUP - Artigo em Revista Científica Internacional |
Files in This Item:
File | Description | Size | Format | |
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93850.1.pdf | Post-Print version | 2.18 MB | Adobe PDF | View/Open |
93850.pdf Restricted Access | Artigo original publicado | 5.56 MB | Adobe PDF | Request a copy from the Author(s) |
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