Comparison of fluorinated membranes in all-vanadium redox flow battery

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22340%2F16%3A43902505" target="_blank" >RIV/60461373:22340/16:43902505 - isvavai.cz</a>

Result on the web

—

DOI - Digital Object Identifier

—

Result language

angličtina

Original language name

Comparison of fluorinated membranes in all-vanadium redox flow battery

Original language description

In last several years redox flow batteries start to play an important role in energy management systems due to their flexible installation and operation, versatile scalability, reduced rate of self-discharge and high round-trip efficiency. The all-vanadium redox flow battery (VRFB) offers the efficient energy storage of flexible capacity, predominantly for stationary applications, such as load levelling, smart-grids, peak shaving and back-up sources. The ion-exchange membrane separates individual electrode compartments of the cell. It is the key component of the VRFB stack, as it directly influences the power, efficiency and price of the system. The resistance of the membrane counts up to 50% of total internal resistance of the battery stack. Generally, there are numerous types of the ion-exchange membranes that can be used in VRFB (anion- vs. cation-exchange, homogenous vs. heterogeneous). The reduction of the membrane cost together with the simultaneous improvement of the relevant properties such as conductivity, selectivity and durability represents the highly appreciated way of the VRFB development. Within the study, various commercially available fluorinated polymeric ion-exchange membranes were characterized with respect to the ionic conductivity, water uptake, swelling and mechanical properties. The particular attention was paid to the issue of the membrane permeability for vanadium ions of different oxidation states (4+, 3+) and to membrane durability in highly oxidative environment of VO2+ ions. The impact of membrane structure, method of the fabrication and preconditioning, thickness and ion-exchange capacity on the measured characteristics was observed. The membranes were also tested in our laboratory VRFB single-cell. .64-2000 znaků. Anotace nesmí být totožná s názvem.

Czech name

—

Czech description

—

Type

D - Article in proceedings

CEP classification

CI - Industrial chemistry and chemical engineering

OECD FORD branch

—

Project

—

Continuities

S - Specificky vyzkum na vysokych skolach

Publication year

2016

Confidentiality

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

Article name in the collection

The International Flow Battery Forum 2016 Conference Papers

ISBN

978-0-9571055-6-0

ISSN

—

e-ISSN

—

Number of pages

2

Pages from-to

130-131

Publisher name

Compass Graphic Design Ltd

Place of publication

Wiltshire

Event location

Karlsruhe

Event date

Jun 7, 2016

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

—