An anthraquinone-functionalized reduced graphene oxide as electrode material for rechargeable batteries
By Sertkol, S
Published in Carbon
NULL
2017
Abstract
Abstract The use of electro-active organic compounds as electrode materials in rechargeable batteries has been a very active research topic due to their high theoretical capacity, availability of various redox potentials depending on the electro-active group, ease of modification of properties, and improved safety. However, the issue of solubility in electrolytes limits their applications in batteries. The most common solutions for this problem involve incorporation of these organic molecules into the insoluble polymeric structures and trapping of these inside porous carbon materials. Here, we have demonstrated the covalent attachment of anthraquinone (AQ) derivatives via nitrene chemistry onto reduced graphene oxide (RGO) as another alternative. The successful synthesis of the {RGO} functionalized with anthraquinone groups (RGO-AQ), and its utilization as cathode materials in Li-batteries have also been demonstrated. The cells with RGO-AQ used as cathode materials initially discharged 126 mA h/g when cycled between 1.8 and 3.2 V at the rate of 5.35 mA/g in LiPF6/EC:DEC (1:1) electrolyte, and discharged 185.7 mA h/g when cycled between 1.3 and 3.6 V against Li metal at the rate of 6.0 mA/g in LiClO4/PC electrolyte.
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.