Synthesis of Nitrogen-Doped Porous Carbon Nanofibers as an Efficient Electrode Material for Supercapacitors

Abstract

Supercapacitors (also known as ultracapacitors) are considered to be the most promising approach to meet the pressing requirements of energy storage. Supercapacitive electrode materials, which are closely related to the high-efficiency storage of energy, have provoked more interest. Herein, we present a high-capacity supercapacitor material based on the nitrogen-doped porous carbon nanofibers synthesized by carbonization of macroscopic-scale carbonaceous nanofibers (CNFs) coated with polypyrrole (CNFs@polypyrrole) at an appropriate temperature. The composite nanofibers exhibit a reversible specific capacitance of 202.0 F g(-1) at the current density of 1.0 A g(-1) in 6.0 mol L(-1) aqueous KOH electrolyte, meanwhile maintaining a high-class capacitance retention capability and a maximum power density of 89.57 kW kg(-1). This kind of nitrogen-doped carbon nanofiber represents an alternative promising candidate for an efficient electrode material for supercapacitors.

Microwave-Assisted Oxidation of Electrospun Turbostratic Carbon Nanofibers for Tailoring Energy Storage Capabilities

“…Since ECNF material systems [13,14] and carbon materials with heteroatom chemical moieties [49,[59][60][61][62] show great promise for electrocapacitive energy storage applications, we are particularly interested in the relationship between the oxidation-induced structural evolution of ECNFs and their electrochemical properties. We performed electrochemical characterizations of ECNFs, assynthesized and microwave-irradiated for different times, in a threeelectrode system using a standard aqueous electrolyte (1 M H 2 SO 4 ); the results for uECNF, ECNF-M2, ECNF-M3, and ECNF-M5 are shown in Figure 2.…”

“…These materials can exhibit high specific capacitances and energy densities due to the heteroatom-induced pseudocapacitance, while simultaneously displaying the merits of carbon electrodes such as excellent cycling stability and high power densities. [49,[59][60][61][62] The key to exceptional electrocapacitive performance is the introduction of ample heteroatom functional groups while simultaneously maintaining good electron/ion transport properties. Herein we report the systematic structural manipulation of PANderived turbostratic ECNFs by a microwave-assisted oxidation process.…”

Analisis Kuantitatif Pori Berdasarkan Pengolahan Citra Menggunakan Wolfram Mathematica

“…Oleh karena itu material berpori saat ini banyak dipelajari dalam berbagai bidang mulai dari teknik filtrasi, teknik konstruksi, geosains, biofisika, hingga sains material. Beberapa pemanfaatan material berpori diantaranya untuk perancah tulang [4], katalis pada industri kimia [5], absorben suatu polutan [6], elektroda [7], divais sensor [8], dan sebagainya.…”

Nitrogen doped Graphene Nickel Ferrite Magnetic Photocatalyst for the Visible Light Degradation of Methylene Blue

“…33 Carbon material doped with a heteroatom, such as B, N or S, can increase the pseudo capacitance by manipulating its electronic properties and chemical reactivity leading to increased performance of doped grapheme. [34][35][36][37] Nitrogen-doped graphene (NG) has great utility because of its higher specific capacitance matched to the pristine graphene and good durability, therefore, enabling its use as electrode materials for supercapacitors and applications in photocatalysis. 38 In this paper, we report the development of one step method to design magnetically separable nitrogen doped graphene-based photocatalyst having excellent catalytic activity.…”