An Acid-Base Electrochemical Flow Battery as energy storage system
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http://hdl.handle.net/10045/62744
Title: | An Acid-Base Electrochemical Flow Battery as energy storage system |
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Authors: | Sáez, Alfonso | Montiel, Vicente | Aldaz Riera, Antonio |
Research Group/s: | Electroquímica Aplicada y Electrocatálisis |
Center, Department or Service: | Universidad de Alicante. Departamento de Química Física | Universidad de Alicante. Instituto Universitario de Electroquímica |
Keywords: | Hydrogen | Acid | Base | Energy storage system | Redox flow battery |
Knowledge Area: | Química Física |
Issue Date: | 26-Oct-2016 |
Publisher: | Elsevier |
Citation: | International Journal of Hydrogen Energy. 2016, 41(40): 17801-17806. doi:10.1016/j.ijhydene.2016.08.141 |
Abstract: | In this paper, we present a new Acid-Base Electrochemical Flow Battery (ABEFB). This system is composed of acidic and alkaline solutions, both with a high supporting electrolyte concentration. These solutions are separated by a proton exchange membrane, using hydrogen as both a reactant and a product. Under this configuration, neutralization energy is used as electromotive force. Thus, in the charging process, hydrogen is oxidized to form hydronium ions (hydrogen oxidation reaction –HOR-) (positive electrode) that acidifies positive electrolyte or posilyte, while hydrogen is formed from water (hydrogen evolution reaction –HER-) (negative electrode) that basifies negative electrolyte or negalyte. On the other hand, during the discharging process, both electrolytes are neutralized through hydrogen oxidation and hydrogen evolution reactions. A platinised titanium electrode is chosen for HER and a platinum-catalysed gas diffusion electrode is used for HOR. This proof of concept has been verified for several charge capacities obtaining a maximum power density of 20 mW cm−2 at 49 mA cm−2. In this sense, faradaic efficiency close to 95% and energy efficiency of 55% are also obtained. Finally, the reuse of produced hydrogen is an interesting aspect to be considered. |
URI: | http://hdl.handle.net/10045/62744 |
ISSN: | 0360-3199 (Print) | 1879-3487 (Online) |
DOI: | 10.1016/j.ijhydene.2016.08.141 |
Language: | eng |
Type: | info:eu-repo/semantics/article |
Rights: | © 2016 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. |
Peer Review: | si |
Publisher version: | http://dx.doi.org/10.1016/j.ijhydene.2016.08.141 |
Appears in Collections: | INV - LEQA - Artículos de Revistas |
Files in This Item:
File | Description | Size | Format | |
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2016_Saez_etal_IJHE_final.pdf | Versión final (acceso restringido) | 1,12 MB | Adobe PDF | Open Request a copy |
2016_Saez_etal_IJHE_preprint.pdf | Preprint (acceso abierto) | 1,47 MB | Adobe PDF | Open Preview |
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