Electrocatalytic Activity of Graphene Multilayers toward I−/I3−: Effect of Preparation Conditions and Polyelectrolyte Modification
By Hasin, Panitat; Alpuche-Aviles, Mario A. & Wu, Yiying
Published in The Journal of Physical Chemistry C
NULL
2010
Abstract
Graphene films have been used as transparent conductive electrodes (TCEs) and counter electrodes in dye-sensitized solar cells (DSCs) in order to reduce the cost of fabrication. This work reports the fundamental electrocatalytic properties of graphene films toward I-/I3- by cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS). The films were prepared from chemical or thermal reduction of graphene oxide. We demonstrate that graphene films obtained under different reduction conditions exhibit different electrocatalytic properties. The mechanism is elucidated by the structural differences as confirmed by X-ray photoelectron spectroscopy (XPS) and Raman spectroscopy. We also show that the electrocatalytic activity of graphene films could be tuned by surface modification with polyelectrolytes.
Microsoft is Ending Support for Windows 7
Microsoft will discontinue support for Windows 7 on January 14, 2020 which means Gamry will also be discontinuing support for Windows 7. If you are upgrading to Windows 10, like many companies and institutions, you need to be running Version 7 of our s oftware . Please note that only USB and Ethernet-based instruments can run in Version 7. Eligible users can download the latest version of our software through our online Client Portal .
If you haven't already registered your instrument, you can do so through the Client Portal .
Please email Technical Support if you have any questions regarding this transition. Please be sure to include your instrument model and serial number when contacting us.