Fluidized‐bed CVD of unstacked double‐layer templated graphene and its application in supercapacitors. Issue 3 (21st December 2014)

• Record Type: Journal Article
• Authors: Tian, Gui‐Li; Zhang, Qiang; Zhao, Meng‐Qiang; Wang, Hao‐Fan; Chen, Cheng‐Meng; Wei, Fei
• Is Part Of: AIChE journal. Volume 61:Issue 3(2015:Mar.)
• Page Start: 747
• Page End: 755
• Publication Date: 2014-12-21
• Subjects: Chemical engineering -- Periodicals; Génie chimique -- Périodiques; 660.28
• DOI: 10.1002/aic.14710
• Languages: English
• ISSNs: 0001-1541

Abstract

<abstract abstract-type="main"> <title> <x xml:space="preserve">Abstract</x> </title> <p>Graphene is inclined to stack with each other that greatly hinders the full utilization of its intrinsic extraordinary properties. Introducing protuberant spacers is a straightforward strategy to avoid the stacking of graphene nanosheets, resulting in a novel unstacked double‐layer templated graphene (DTG) structure. Herein, a family of layered double hydroxides were used for the bulk chemical vapor deposition (CVD) of DTG in a fluidized‐bed reactor. A high specific surface area of 1554.2 m² g⁻¹ and a large pore volume of 1.70 cm³ g⁻¹ were achieved. When used as the electrode material for supercapacitors, the DTG afforded a specific capacitance of 65.5 F g⁻¹ at a sweep rate of 5.0 mV s⁻¹ and a capacitance retention of 77% when the sweep rate was increased to 500 mV s⁻¹. Therefore, the DTG obtained via fluidized bed CVD is a promising electrode material for supercapacitor applications. © 2014 American Institute of Chemical Engineers <italic>AIChE J</italic>, 61: 747–755, 2015</p> </abstract>