Premium
Fluidized‐bed CVD of unstacked double‐layer templated graphene and its application in supercapacitors
Author(s) -
Tian GuiLi,
Zhang Qiang,
Zhao MengQiang,
Wang HaoFan,
Chen ChengMeng,
Wei Fei
Publication year - 2015
Publication title -
aiche journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.958
H-Index - 167
eISSN - 1547-5905
pISSN - 0001-1541
DOI - 10.1002/aic.14710
Subject(s) - supercapacitor , graphene , chemical vapor deposition , materials science , capacitance , fluidized bed , stacking , electrode , chemical engineering , nanotechnology , layer (electronics) , chemistry , organic chemistry , engineering
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 m 2 g −1 and a large pore volume of 1.70 cm 3 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 AIChE J , 61: 747–755, 2015