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      Gold nanospacers greatly enhance the capacitance of electrochemically reduced graphene

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      Author
      Buglione, Lucia
      Bonanni, Alessandra
      Ambrosi, Adriano
      Pumera, Martin
      Date of Issue
      2012
      School
      School of Physical and Mathematical Sciences
      Abstract
      Graphene has great potential in electrochemical storage applications for supercapacitors owing to its high conductivity, large surface area, and the economical feasibility in producing it. The main issue that faces graphene nanomaterials in this application is that they tend to restack, thus decreasing the accessible surface area and leading to low capacitance. Gold nanoparticles of various sizes (2–150 nm) can be used as efficient spacing material for electrochemically reduced graphene oxide, thereby greatly increasing capacitance from 4.99 F g−1, when no spacers are used, to a capacitance of 174.2 F g−1 (per gram of graphene) when gold nanospacers of 10 nm diameter are introduced.
      Type
      Journal Article
      Series/Journal Title
      Chempluschem
      Collections
      • SPMS Journal Articles
      http://dx.doi.org/10.1002/cplu.201100016
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