Please use this identifier to cite or link to this item:
https://hdl.handle.net/10216/85521
Author(s): | João Azevedo Thorsten Seipp Jens Burfeind Célia Sousa Anders Bentien João Pedro Araújo Adélio Mendes |
Title: | Unbiased solar energy storage: Photoelectrochemical redox flow battery |
Issue Date: | 2016 |
Abstract: | Electricity from renewable energy sources is craving for efficient storage technologies, in particular solar industry, to enable practical small-scale solutions for residential and offices use. The best stationary technology is probably the redox flow batteries. This article proposes the direct conversion of sunlight into electrochemical energy stored in a redox flow battery. A photoelectrochemical cell is used to charge a vanadium redox flow cell (CdS(s)|V3+, VO2+||V3+, V2+|Carbon Felt(s), E0 =0.6 VNHE). A CdS thin film photoelectrode is prepared to directly charge the cell, pairs V3+/VO2+. CdS photoanode exhibits competitive photocurrents, when compared to other photoelectrochemical devices, and yields enough photovoltage to charge the vanadium battery up to 75% with no external bias. An overlayer of CdSe improves the performance of CdS with current densities up to ca. 1.4 mA cm2 . Finally, a tandem configuration is tested using a dye-sensitized solar cell and a CdS photoanoade creating 1.3 V of photovoltage. This tandem arrangement proves to charge conventional all vanadium redox cell (DSC/CdS(s)|VO2+, VO2 +||V3+, V2+|Carbon Felt(s), E0 =1.2 VNHE) without external bias. |
Subject: | Ciências Tecnológicas Technological sciences |
URI: | https://hdl.handle.net/10216/85521 |
Related Information: | 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: | openAccess |
License: | https://creativecommons.org/licenses/by-nc/4.0/ |
Appears in Collections: | FEUP - Artigo em Revista Científica Internacional |
Files in This Item:
File | Description | Size | Format | |
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145565.pdf | Artigo original publicado | 1.61 MB | Adobe PDF | View/Open |
This item is licensed under a Creative Commons License