Performance evaluation of thermally treated graphite felt electrodes for vanadium redox flow battery and their four-point single cell characterization

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F49777513%3A23640%2F18%3A43951179" target="_blank" >RIV/49777513:23640/18:43951179 - isvavai.cz</a>

Alternative codes found

RIV/60461373:22340/18:43917431

Result on the web

<a href="http://dx.doi.org/10.1016/j.jpowsour.2018.01.079" target="_blank" >http://dx.doi.org/10.1016/j.jpowsour.2018.01.079</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jpowsour.2018.01.079" target="_blank" >10.1016/j.jpowsour.2018.01.079</a>

Result language

angličtina

Original language name

Performance evaluation of thermally treated graphite felt electrodes for vanadium redox flow battery and their four-point single cell characterization

Original language description

In our contribution we study the electrocatalytic effect of oxygen functionalization of thermally treated graphite felt on kinetics of electrode reactions of vanadium redox flow battery. Chemical and morphological changes of the felts are analysed by standard physico-chemical characterization techniques. A complex method four-point method is developed and employed for characterization of the felts in a laboratory single-cell. The method is based on electrochemical impedance spectroscopy and load curves measurements of positive and negative half-cells using platinum wire pseudoreference electrodes. The distribution of ohmic and faradaic losses within a single-cell is evaluated for both symmetric and asymmetric electrode set-up with respect to the treatment conditions. Positive effect of oxygen functionalization is observed only for negative electrode, whereas kinetics of positive electrode reaction is almost unaffected by the treatment. This is in a contradiction to the results of typically employed cyclovoltammetric characterization which indicate that both electrodes are enhanced by the treatment to a similar extent. The developed four-point characterization method can be further used e.g., for the component screening and in-situ durability studies on singlecell scale redox flow batteries of various chemistries.

Czech name

—

Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

10405 - Electrochemistry (dry cells, batteries, fuel cells, corrosion metals, electrolysis)

Project

<a href="/en/project/GP14-33400P" target="_blank" >GP14-33400P: Study of electrode reaction kinetic on carbon-based electrodes with respect to the electrode functionalization and morphology</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2018

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

JOURNAL OF POWER SOURCES

ISSN

0378-7753

e-ISSN

—

Volume of the periodical

380

Issue of the periodical within the volume

MAR 15 2018

Country of publishing house

NL - THE KINGDOM OF THE NETHERLANDS

Number of pages

10

Pages from-to

105-114

UT code for WoS article

000428007400012

EID of the result in the Scopus database

2-s2.0-85041736009