English
 
Help Privacy Policy Disclaimer
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT
Add to Basket
  Local TagsRelease HistoryDetailsSummary

Released
Journal Article

Enhancing the electrochemical and electronic performance of CVD-grown graphene by minimizing trace metal impurities.

MPS-Authors
/persons/resource/persons131049

Yu,  H. K.
Department of Dynamics at Surfaces, MPI for Biophysical Chemistry, Max Planck Society;

/persons/resource/persons16046

Wodtke,  A. M.
Department of Dynamics at Surfaces, MPI for Biophysical Chemistry, Max Planck Society;

External Resource

http://onlinelibrary.wiley.com/doi/10.1002/celc.201402325/pdf
(Publisher version)

Fulltext (restricted access)
There are currently no full texts shared for your IP range.
Fulltext (public)
There are no public fulltexts stored in PuRe
Supplementary Material (public)

2081716_Suppl.pdf
(Supplementary material), 2MB

Citation

Iost, R. M., Crespilho, F. N., Zuccaro, L., Yu, H. K., Wodtke, A. M., Kern, K., et al. (2014). Enhancing the electrochemical and electronic performance of CVD-grown graphene by minimizing trace metal impurities. ChemElectroChem, 1(12), 2070-2074. doi:10.1002/celc.201402325.


Cite as: https://hdl.handle.net/11858/00-001M-0000-0024-68C6-7
Abstract
The presence of unwanted impurities in graphene is known to have a significant impact on its physical and chemical properties. Similar to carbon nanotubes, any trace metals present in graphene will affect the electrocatalytic properties of the material. Here, we show by direct electroanalysis that traces of copper still remain in transferred CVD (chemical vapor deposition)-grown graphene (even after the usual copper etching process) and strongly influence its electrochemical properties. Subsequently, we use a real-time electrochemical etching procedure to remove more than 90 % of the trace metal impurities, with a clear improvement in both the electrochemical and electronic-transport properties of monolayer graphene.