A high-performance carbon nanoparticle-decorated graphite felt electrode for vanadium redox flow batteries

L. Wei, T. S. Zhao, G. Zhao, Liang An, L. Zeng

Research output: Journal article publicationJournal articleAcademic researchpeer-review

93 Citations (Scopus)

Abstract

Unlike conventional VRFBs with flow-through structure, in this work we create a VRFB featuring a flow-field structure with a carbon nanoparticle-decorated graphite felt electrode for the battery. This novel structure, exhibiting a significantly reduced ohmic loss through reducing electrode thickness, an increased surface area and improved electrocatalytic activity by coating carbon nanoparticles, allows the energy efficiency up to 84.8% at a current density of as high as 100 mA cm−2and the peak power density to reach a value of 508 mW cm−2. In addition, it is demonstrated that the battery with this proposed structure exhibits a substantially improved rate capability and capacity retention as opposed to conventional flow-through structured battery with thick graphite felt electrodes.
Original languageEnglish
Pages (from-to)74-79
Number of pages6
JournalApplied Energy
Volume176
DOIs
Publication statusPublished - 1 Jan 2016
Externally publishedYes

Keywords

  • Carbon nanoparticles
  • Energy efficiency
  • Thin electrode
  • Vanadium redox flow battery

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Building and Construction
  • Energy(all)
  • Mechanical Engineering
  • Management, Monitoring, Policy and Law

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