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Uniform Discrete Nitrogen‐Doped Double‐Shelled Cage‐like Hollow Carbon Spheres with Direct Large Mesopores for High‐Performance Supercapacitors
Author(s) -
Fang Mingming,
Chen Zhimin,
Liu Yuan,
Liu Wei,
Xu Qun
Publication year - 2017
Publication title -
energy technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.91
H-Index - 44
eISSN - 2194-4296
pISSN - 2194-4288
DOI - 10.1002/ente.201700263
Subject(s) - supercapacitor , materials science , carbon fibers , capacitance , spheres , mesoporous material , nitrogen , polystyrene , chemical engineering , template method pattern , cage , doping , nanotechnology , electrode , composite number , composite material , chemistry , optoelectronics , organic chemistry , catalysis , polymer , physics , astronomy , engineering , mathematics , combinatorics
Uniform discrete nitrogen‐doped double‐shelled cage‐like hollow carbon spheres (DCHCSs) with direct large mesopores on both shells were successfully synthesized for the first time by using cross‐linked polystyrene spheres and silica particles as a dual template and dopamine as the source of both carbon and nitrogen. These DCHCSs exhibited high specific capacitance values of 229.3 and 160 F g −1 at 1 and 10 A g −1 , respectively, with excellent rate capability and cycling stability.