• 文献标题:   Performance Enhancement of Reduced Graphene Oxide-Modified Carbon Electrodes for Vanadium Redox-Flow Systems
  • 文献类型:   Article
  • 作  者:   CHAKRABARTI B, NIR D, YUFIT V, TARIQ F, RUBIOGARCIA J, MAHER R, KUCERNAK A, ARAVIND PV, BRANDON N
  • 作者关键词:   cyclic voltammetry, electrophoresi, fuel cell, graphene, surface analysi
  • 出版物名称:   CHEMELECTROCHEM
  • ISSN:   2196-0216
  • 通讯作者地址:   Imperial Coll London
  • 被引频次:   5
  • DOI:   10.1002/celc.201600402
  • 出版年:   2017

▎ 摘  要

Reduced graphene oxide (rGO) suspended in an N,N-dimethylformamide (DMF) solvent underwent electrophoretic deposition (EPD) on carbon paper (CP) electrodes. X-ray computed micro-tomography (XMT) indicates a 24% increase in the specific surface area of CP modified with rGO in comparison to the untreated sample. Furthermore, XMT confirms that the deposition also penetrates into the substrate. Raman analysis shows that the rGO deposited is more amorphous than the CP electrode. A significant reduction in charge-transfer resistance of the VO2+/VO2+ reaction is also observed (from impedance measurements) in modified samples in comparison to untreated CP electrodes.