Fabrication of Graphene Sheets Intercalated with Manganese Oxide/Carbon Nanofibers: Toward High‐Capacity Energy Storage

• DOI: 10.1002/smll.201201754
• Publication Date: 2012-10-04T07:15:51Z
• Authors: Oh Seok Kwon; Taejoon Kim; Jun Seop Lee; Seon Joo Park; Hyun‐Woo Park; Minjeong Kang; Ji Eun Lee; Jyongsik Jang; Hyeonseok Yoon
• Keywords: Carbon fibers; Electrospinning

Abstract Herein, 3D nanohybrid architectures consisting of MnO x nanocrystals, carbon nanofibers (CNFs), and graphene sheets are fabricated. ‐decorated CNFs (MCNFs) with diameters about 50 nm readily obtained via single‐nozzle co‐electrospinning, followed by heat treatment. The MCNFs then intercalated between sheets, yielding the ternary MCNF/reduced oxide (RGO). This straightforward synthesis process affords product on a scale tens grams. ultrathin CNFs, which might be promising alternative to nanotubes (CNTs), overcome low electrical conductivity excellent pseudocapacitive component, . Furthermore, separated boost electrochemical performance electrodes. These electrodes exhibit enhanced specific capacitances compared sheet electrode fabricated MCNF‐only or RGO‐only. Evidently, RGO acts as conductive channel inside nanohybrid, while increase efficiency ion charge transfer in nanohybrid. proposed expected lay foundation for design fabrication high‐performance