Electrophoretically deposited graphene oxide and carbon nanotube composite for electrochemical capacitors

Nanotechnology. 2015 Oct 16;26(41):415203. doi: 10.1088/0957-4484/26/41/415203. Epub 2015 Sep 25.

Abstract

We report a scalable one-step electrode fabrication approach for synthesizing composite carbon-based supercapacitors with synergistic outcomes. Multi-walled carbon nanotubes (MWCNTs) were successfully integrated into our modified electrophoretic deposition process to directly form composite MWCNT-GO electrochemical capacitor electrodes (where GO is graphene oxide) with superior performance to solely GO electrodes. The measured capacitance improved threefold, reaching a maximum specific capacitance of 231 F g(-1). Upon thermal reduction, MWCNT-GO electrode sheet resistance decreased by a factor of 8, significantly greater than the 2× decrease of those without MWCNTs.

Publication types

  • Research Support, U.S. Gov't, Non-P.H.S.