Development of carbon nanotube and graphite filled polyphenylene sulfide based bipolar plates for all-vanadium redox flow batteries

B Caglar (Corresponding Author), P Fischer, Pertti Kauranen, Mikko Karttunen, P Elsner

Research output: Contribution to journalArticleScientificpeer-review

33 Citations (Scopus)

Abstract

In this study, synthetic graphite and carbon nanotube (CNT) filled polyphenylene sulfide (PPS) based bipolar plates are produced by using co-rotating twin-screw extruder and injection molding. Graphite is the main conductive filler and CNTs are used as bridging filler between graphite particles. To improve the dispersion of the fillers and the flow behavior of the composite, titanate coupling agent (KR-TTS) is used. The concentration effect of CNTs and coupling agent on the properties of bipolar plates are examined. At 72.5 wt.% total conductive filler concentration, by addition of 2.5 wt.% CNT and 3 wt.% KR-TTS; through-plane and in-plane electrical conductivities increase from 1.42 S cm-1 to 20 S cm-1 and 6.4 S cm-1 to 57.3 S cm-1 respectively compared to sample without CNTs and additive. Extruder torque value and apparent viscosity of samples decrease significantly with coupling agent and as a result; the flow behavior is positively affected. Flexural strength is improved 15% by addition of 1.25 wt.% CNT. Differential scanning calorimeter (DSC) analysis shows nucleating effect of conductive fillers on PPS matrix. Corrosion measurements, cyclic voltammetry and galvanostatic charge-discharge tests are performed to examine the electrochemical stability and the performance of produced bipolar plates in all-vanadium redox flow battery
Original languageEnglish
Pages (from-to)88-95
JournalJournal of Power Sources
Volume256
DOIs
Publication statusPublished - 2014
MoE publication typeA1 Journal article-refereed

Fingerprint

Vanadium
Carbon Nanotubes
Graphite
vanadium
electric batteries
Fillers
sulfides
Carbon nanotubes
fillers
graphite
carbon nanotubes
Coupling agents
Extruders
Artificial graphite
Calorimeters
injection molding
Injection molding
Bending strength
flexural strength
Cyclic voltammetry

Keywords

  • Bipolar plate
  • carbon nanotubes
  • corrosion measurements
  • polymer composite
  • vanadium redox flow batter

Cite this

Caglar, B ; Fischer, P ; Kauranen, Pertti ; Karttunen, Mikko ; Elsner, P. / Development of carbon nanotube and graphite filled polyphenylene sulfide based bipolar plates for all-vanadium redox flow batteries. In: Journal of Power Sources. 2014 ; Vol. 256. pp. 88-95.
@article{80440bde1579478c8ad467f2700f7ac1,
title = "Development of carbon nanotube and graphite filled polyphenylene sulfide based bipolar plates for all-vanadium redox flow batteries",
abstract = "In this study, synthetic graphite and carbon nanotube (CNT) filled polyphenylene sulfide (PPS) based bipolar plates are produced by using co-rotating twin-screw extruder and injection molding. Graphite is the main conductive filler and CNTs are used as bridging filler between graphite particles. To improve the dispersion of the fillers and the flow behavior of the composite, titanate coupling agent (KR-TTS) is used. The concentration effect of CNTs and coupling agent on the properties of bipolar plates are examined. At 72.5 wt.{\%} total conductive filler concentration, by addition of 2.5 wt.{\%} CNT and 3 wt.{\%} KR-TTS; through-plane and in-plane electrical conductivities increase from 1.42 S cm-1 to 20 S cm-1 and 6.4 S cm-1 to 57.3 S cm-1 respectively compared to sample without CNTs and additive. Extruder torque value and apparent viscosity of samples decrease significantly with coupling agent and as a result; the flow behavior is positively affected. Flexural strength is improved 15{\%} by addition of 1.25 wt.{\%} CNT. Differential scanning calorimeter (DSC) analysis shows nucleating effect of conductive fillers on PPS matrix. Corrosion measurements, cyclic voltammetry and galvanostatic charge-discharge tests are performed to examine the electrochemical stability and the performance of produced bipolar plates in all-vanadium redox flow battery",
keywords = "Bipolar plate, carbon nanotubes, corrosion measurements, polymer composite, vanadium redox flow batter",
author = "B Caglar and P Fischer and Pertti Kauranen and Mikko Karttunen and P Elsner",
year = "2014",
doi = "10.1016/j.jpowsour.2014.01.060",
language = "English",
volume = "256",
pages = "88--95",
journal = "Journal of Power Sources",
issn = "0378-7753",
publisher = "Elsevier",

}

Development of carbon nanotube and graphite filled polyphenylene sulfide based bipolar plates for all-vanadium redox flow batteries. / Caglar, B (Corresponding Author); Fischer, P; Kauranen, Pertti; Karttunen, Mikko; Elsner, P.

In: Journal of Power Sources, Vol. 256, 2014, p. 88-95.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Development of carbon nanotube and graphite filled polyphenylene sulfide based bipolar plates for all-vanadium redox flow batteries

AU - Caglar, B

AU - Fischer, P

AU - Kauranen, Pertti

AU - Karttunen, Mikko

AU - Elsner, P

PY - 2014

Y1 - 2014

N2 - In this study, synthetic graphite and carbon nanotube (CNT) filled polyphenylene sulfide (PPS) based bipolar plates are produced by using co-rotating twin-screw extruder and injection molding. Graphite is the main conductive filler and CNTs are used as bridging filler between graphite particles. To improve the dispersion of the fillers and the flow behavior of the composite, titanate coupling agent (KR-TTS) is used. The concentration effect of CNTs and coupling agent on the properties of bipolar plates are examined. At 72.5 wt.% total conductive filler concentration, by addition of 2.5 wt.% CNT and 3 wt.% KR-TTS; through-plane and in-plane electrical conductivities increase from 1.42 S cm-1 to 20 S cm-1 and 6.4 S cm-1 to 57.3 S cm-1 respectively compared to sample without CNTs and additive. Extruder torque value and apparent viscosity of samples decrease significantly with coupling agent and as a result; the flow behavior is positively affected. Flexural strength is improved 15% by addition of 1.25 wt.% CNT. Differential scanning calorimeter (DSC) analysis shows nucleating effect of conductive fillers on PPS matrix. Corrosion measurements, cyclic voltammetry and galvanostatic charge-discharge tests are performed to examine the electrochemical stability and the performance of produced bipolar plates in all-vanadium redox flow battery

AB - In this study, synthetic graphite and carbon nanotube (CNT) filled polyphenylene sulfide (PPS) based bipolar plates are produced by using co-rotating twin-screw extruder and injection molding. Graphite is the main conductive filler and CNTs are used as bridging filler between graphite particles. To improve the dispersion of the fillers and the flow behavior of the composite, titanate coupling agent (KR-TTS) is used. The concentration effect of CNTs and coupling agent on the properties of bipolar plates are examined. At 72.5 wt.% total conductive filler concentration, by addition of 2.5 wt.% CNT and 3 wt.% KR-TTS; through-plane and in-plane electrical conductivities increase from 1.42 S cm-1 to 20 S cm-1 and 6.4 S cm-1 to 57.3 S cm-1 respectively compared to sample without CNTs and additive. Extruder torque value and apparent viscosity of samples decrease significantly with coupling agent and as a result; the flow behavior is positively affected. Flexural strength is improved 15% by addition of 1.25 wt.% CNT. Differential scanning calorimeter (DSC) analysis shows nucleating effect of conductive fillers on PPS matrix. Corrosion measurements, cyclic voltammetry and galvanostatic charge-discharge tests are performed to examine the electrochemical stability and the performance of produced bipolar plates in all-vanadium redox flow battery

KW - Bipolar plate

KW - carbon nanotubes

KW - corrosion measurements

KW - polymer composite

KW - vanadium redox flow batter

U2 - 10.1016/j.jpowsour.2014.01.060

DO - 10.1016/j.jpowsour.2014.01.060

M3 - Article

VL - 256

SP - 88

EP - 95

JO - Journal of Power Sources

JF - Journal of Power Sources

SN - 0378-7753

ER -