Formation of Monodisperse Carbon Spheres with Tunable Size via Triblock Copolymer-Assisted Synthesis and Their Capacitor Properties.
A facile hydrothermal polymerization method has been developed for the preparation of monodisperse carbon spheres (MCSs) using the triblock copolymer F108 as surfactant. The synthesis is based on the ammonia-catalyzed polymerization reaction between phenol and formaldehyde (PF). The resultant MCSs have a perfect spherical morphology, smooth surface, and high dispersity. The particle sizes can be tuned in a wide range of 500~2400 nm by adjusting the dosage of the PF precursor. The activated MCSs with suitable heteroatoms (N and O) doped and a large specific surface area (960 m2 g-1) were obtained. A high-performance electrode of electrical double-layer capacitors fabricated by those active material have an excellent specific capacitance (310 F g-1 at 0.5 A g-1) and outstanding cycling stability (92% capacitance retention after 10,000 cycles). This work provides a new opportunity for the fabrication of MCSs with potential applications.
['Liang|Zhongguan|Z|', 'Zhang|Luomeng|L|', 'Liu|Hao|H|', 'Zeng|Jianping|J|', 'Zhou|Jianfei|J|', 'Li|Hongjian|H|', 'Xia|Hui|H|http://orcid.org/0000-0001-7548-6162']
Monodisperse carbon spheres Triblock Copolymer F108 Surfactant Energy storage and conversion Supercapacitor