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Tuning shape of three dimensional graphene sheets

Paper ID Volume ID Publish Year Pages File Format Full-Text
53208 46953 2016 4 PDF Available
Title
Tuning shape of three dimensional graphene sheets
Abstract

•The shape of 3D graphene sheets synthesized from the reaction between Li2O and CO can be tuned by Li2O particle size.•The larger Li2O particles, which have a slower reaction with CO, promotes the formation of a better-ordered 3D graphene shape.•The shape change of 3D graphene from granulated to flower and then to honeycomb can increase its efficiency as a counter electrode catalyst for a DSSC.

3D graphene has been explored as an important material and catalyst for many applications. However, it is still a challenge to tune the shape of 3D graphene sheets. Herein, it is demonstrated that the shapes of 3D graphene sheets, which were synthesized from the reaction between Li2O and CO, are strongly dependent on the particle size of Li2O. When Li2O particle size was very small (about 400 nm), the formed graphene sheets possessed a granulated shape. However, as Li2O particle size increased, the shape of the synthesized graphene sheets changed to flower-structure and then to honeycomb-structure. Furthermore, the shape change of graphene from the granulated to the honeycomb-structured can increase its electro-catalytic efficiency as a counter electrode catalyst for dye-sensitized solar cells (DSSCs).

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Keywords
3D graphene; Shape; Catalyst; Counter electrode; Dye-sensitized solar cells
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Tuning shape of three dimensional graphene sheets
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Today - Volume 274, 1 October 2016, Pages 99–102
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
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Price was $35.95
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Price after discount Only $4.95
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Full-text PDF Download
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