Study of kinetics of carbon felt electrodes for vanadium redox flow battery
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22340%2F16%3A43902516" target="_blank" >RIV/60461373:22340/16:43902516 - isvavai.cz</a>
Result on the web
—
DOI - Digital Object Identifier
—
Alternative languages
Result language
angličtina
Original language name
Study of kinetics of carbon felt electrodes for vanadium redox flow battery
Original language description
The vanadium redox flow battery provides efficient, safe and long-life stationary energy storage allowing for compensating the misbalances between the production and consumption of electrical energy throughout a day. The electrolytes stored in external tanks are pumped through the battery stack where the energy conversion is realized via reactions of vanadium redox couples on inert electrodes. The graphite felt electrodes are typically used as they combine good conductivity, chemical and electrochemical stability and reasonable price. Their electrocatalytic activity can be improved, e.g., by thermal pre-treatments. The aim of this work was to optimize the temperature of thermal treatment for two different types of graphite felts to be used in the battery stack. The effect of the treatment was observed on the felt wettability and oxygen coverage of the fiber surface by XPS. The electrochemical characterization by cyclic voltammetry was done in electrochemical cell of tailored in-house design and construction. Significant enhancements of felt electrode performance were reached by the treatment, however, optimal temperatures differed for both carbon felts. Treatment at 500 oC was optimal for Felt A, resulting in the highest oxygen coverage and electrode-electrolyte interface area. For Felt B the optimum was interplay between the oxygen coverage and the interface area, treatment at 350 oC was found optimal for Felt B.
Czech name
—
Czech description
—
Classification
Type
D - Article in proceedings
CEP classification
CI - Industrial chemistry and chemical engineering
OECD FORD branch
—
Result continuities
Project
—
Continuities
S - Specificky vyzkum na vysokych skolach
Others
Publication year
2016
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Article name in the collection
Workshop of Students' Prezentations 2016 "Membranes and Membrane Processes"
ISBN
978-80-904517-8-0
ISSN
—
e-ISSN
—
Number of pages
11
Pages from-to
1-11
Publisher name
Česká membránová platforma
Place of publication
Česká Lípa
Event location
Stráž pod Ralskem
Event date
Oct 12, 2016
Type of event by nationality
CST - Celostátní akce
UT code for WoS article
—