alexa Hierarchical Porous Carbon Nanostructures For Energy Storage | 69144
ISSN: 2169-0022

Journal of Material Sciences & Engineering
Open Access

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Joint Conference: International Conference on DIAMOND AND CARBON MATERIALS & GRAPHENE AND SEMICONDUCTORS

Jian-Gan Wang
Northwestern Polytechnical University, China
Posters & Accepted Abstracts: J Material Sci Eng
DOI: 10.4172/2169-0022-C1-077
Abstract
Hierarchical porous carbon nanostructures offer a promising avenue to effectively address energy and environmental problems. In this talk, we would introduce two recent work regarding porous carbon nanotubes and nitrogen-doped ordered mesoporous carbon spheres. First, we developed a totally green synthesis route for fabricating hierarchically porous carbon nanotubes without the assistance of any soft/hard templates and activation procedures, thereby rendering the new synthesis route highly recyclable, eco-friendly, and scalable. The as-prepared porous carbon materials exhibit a high specific surface area of 1500 m2 g-1. The porous carbon can be served as excellent electrode materials for high-performance supercapacitors, delivering a high specific capacitance of 281 F g-1 at 0.1 A g-1 along with outstanding rate and cyclic performance. In the second section, we will report a facile one-pot soft-templating and one-step pyrolysis method to fabricate nitrogen-doped ordered mesoporous carbon spheres (N-OMCS). The as-obtained N-OMCS possesses an average diameter of around 300 nm, a moderate specific surface area of 439 m2 g-1 and uniform mesopore size at 3.2 nm. Owing to the ordered meso-structure and nitrogen doping, the N-OMCS materials, when used as supercapacitor electrodes, delivers a high specific capacitance of 288 F g-1 at a current density of 0.1 A g-1. More remarkably, the N-OMCS electrode shows excellent rate capability with 66% capacitance retention at an ultrahigh current density of 50 A g-1 and outstanding cycling stability with almost no degradation over 25000 cycles. The two work would open up new avenues to synthesize highly porous carbon nanostructures with unique architecture and surface chemistry, such as hollow/meso structure and nitrogen doping for high efficient energy storage applications.
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