• English
  • Deutsch
  • Log In
    Password Login
    Research Outputs
    Fundings & Projects
    Researchers
    Institutes
    Statistics
Repository logo
Fraunhofer-Gesellschaft
  1. Home
  2. Fraunhofer-Gesellschaft
  3. Artikel
  4. Use of carbon additives towards rechargeable zinc slurry air flow batteries
 
  • Details
  • Full
Options
2020
Journal Article
Title

Use of carbon additives towards rechargeable zinc slurry air flow batteries

Abstract
The performance of redox flow batteries is notably influenced by the electrolyte, especially in slurry-based flow batteries, as it serves as both an ionic conductive electrolyte and a flowing electrode. In this study, carbon additives were introduced to achieve a rechargeable zinc slurry flow battery by minimizing the zinc plating on the bipolar plate that occurs during charging. When no carbon additive was present in the zinc slurry, the discharge current density was 24 mA∙cm−2 at 0.6 V, while the use of carbon additives increased it to up to 38 mA∙cm−2. The maximum power density was also increased from 16 mW∙cm−2 to 23 mW∙cm−2. Moreover, the amount of zinc plated on the bipolar plate during charging decreased with increasing carbon content in the slurry. Rheological investigation revealed that the elastic modulus and yield stress are directly proportional to the carbon content in the slurry, which is beneficial for redox flow battery applications, but comes at the expense of an increase in viscosity (two-fold increase at 100 s−1). These results show how the use of conductive additives can enhance the energy density of slurry-based flow batteries.
Author(s)
Choi, Nak Heon
Fraunhofer-Institut für Chemische Technologie ICT  
Olmo, Diego del
Milian, Diego
Kissi, Nadia el
Fischer, Peter  
Fraunhofer-Institut für Chemische Technologie ICT  
Pinkwart, Karsten  
Fraunhofer-Institut für Chemische Technologie ICT  
Tübke, Jens  
Fraunhofer-Institut für Chemische Technologie ICT  
Journal
Energies  
Project(s)
European Training Network to improve materials for high-performance, low-cost next- generation redox-flow batteries  
Funder
European Commission EC  
Open Access
File(s)
Download (3.08 MB)
Rights
CC BY 4.0: Creative Commons Attribution
DOI
10.24406/publica-r-265098
10.3390/en13174482
Language
English
Fraunhofer-Institut für Chemische Technologie ICT  
Keyword(s)
  • zinc slurry air flow battery

  • redox flow battery

  • zinc-air battery

  • carbon additives

  • rheology

  • Cookie settings
  • Imprint
  • Privacy policy
  • Api
  • Contact
© 2024