A facile template approach to nitrogen-doped hierarchical porous carbon nanospheres from polydopamine for high-performance supercapacitors

Abstract

A facile polydopamine-templated approach to nitrogen-doped hierarchical porous carbon nanospheres for high-performance supercapacitors.

A green approach to prepare hierarchical porous carbon nanofibers from coal for high-performance supercapacitors

“…The process is different from the self-assembly of F127. 32 Thus the resulting mesopores are irregular arrangement. The contents of carbon in the samples were measured by thermogravimetric (TG) curves as shown in Fig.…”

“…31 A facile template F127 is directly decomposed and forms mesopores in the process of carbonation. 32 As a result, the sample shows a high capacitance of 265.2 F g À1 at a scan rate of 1.0 A g À1 serving as the binder-free electrodes in EDLCs, which is superior to that of the samples (170 F g À1 ) without the F127. More signicantly, the optimal sample delivers an outstanding rate capability of 220.3 F g À1 at a scan rate of 20.0 A g À1 and maintains over 100% of the initial capacitance aer 20 000 cycles at 10.0 A g À1 .…”

“…Among so template agents, Pluronic amphiphilic triblock copolymers such as F127 is extensively used for the fabrication of mesoporous carbon due to their amphiphilic nature. 17,[29][30][31] Up to now, a few methods have been reported for the direct synthesis of porous CNFs by carbonization of polymers, but it is still a great challenge and highly desirable to design a simple approach for the controllable synthesis HPCNFs.…”

Regulating Capacitive Performance of Monolithic Carbon Sponges by Balancing Heteroatom Content, Surface Area and Graphitization Degree

“…For example, to increase the nitrogen content in electrode materials, polydopamine is applied as a source to introduce nitrogen element. [25] So it is promising to achieve high capacitive performance by engineering carbon materials that can overcome above obstacles. [26] In recent years, self-supported electrodes have attracted intensive interest especially in the flied of supercapacitors.…”

Analysis of structural, morphological and electrochemical on Ni (OH)2 Coated carbon sphere by Hydrothermal method

“…The high explicit surface zone, enormous pore volume, well-requested and controllable permeable structure, unique morphologies of carbons and their outstanding chemical, mechanical and warm dependability make them fascinating for remarkable applications including catalysis, energy storage and change, water purification and sensing. [9][10][11][12][13][14][15][16][17][18]Varity of carbon material having excellent capacitance behaviour like carbon onion [19], carbide-derived carbon [20], carbon aerogels [21], carbon nanotube [22] outstanding retentivity of the electrode material [23]. Carbon sphere contains more advantages compare to exhausting material like spherical geometry, good liquidness, controllable porosity and ultra-tuneable size.…”