High temperature ammonia treatment of pitch particulates and fibers for nitrogen enriched microporous carbons

Świetlik, U.; Grzyb, Bartosz; Torchała, Kamila; Gryglewicz, Grażyna; Machnikowski, J.

doi:10.1016/j.fuproc.2013.11.009

Cited by 32 publications

(18 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Specifically, the presence of nitrogen not only provides pseudocapacitance but also increases the electron-donor capability of the N-enriched carbons [10][11][12]. Several post-activation techniques, such as ammoxidation, amination, and treatment with nitrogen-containing organic compounds, have been employed to enrich AC surfaces with nitrogen [11,[13][14][15][16]. The use of nitrogencontaining carbon precursors appears to be more desirable because it avoids the use of post-treatments and guarantees a uniform distribution of nitrogen atoms in the bulk of the material [17].…”

Section: Introductionmentioning

confidence: 99%

Nitrogen-containing chitosan-based carbon as an electrode material for high-performance supercapacitors

et al. 2016

Self Cite

View full text Add to dashboard Cite

Nitrogen-containing activated carbons were prepared from chitosan, a widely available and inexpensive biopolysaccharide, by a simple procedure and tested as electrode material in supercapacitors. The physical activation of chitosan chars with CO 2 led to carbons with a very high nitrogen content (up to 5.4 wt%) and moderate surface areas (1000-1100 m 2 g -1 ). Only chitosan-based activated carbons with a similar microporous structure were considered in this study to evaluate the effect of the nitrogen content and distribution on their electrochemical performance. The N-containing activated carbons were tested in two-and three-electrode supercapacitors using an aqueous electrolyte (1 M H 2 SO 4 ), and they exhibited superior surface capacitance (19.5 lF cm -2 ) and pseudocapacitance compared to a commercial activated carbon with a negligible nitrogen content and similar microporosity. The low oxygen content and the presence of stable quaternary nitrogen improved the charge propagation on the chitosan-based carbons, which was confirmed by the high capacity retention of 83 %. The chitosan-based carbons exhibited excellent cyclic stability and maintained 100 % of their capacitance after 5000 charge/discharge cycles at a current density of 1 A g -1 . These results demonstrate the suitability of chitosan-based carbons for application in energy storage systems.Electronic supplementary material The online version of this article

show abstract

Section: Introductionmentioning

confidence: 99%

Nitrogen-containing chitosan-based carbon as an electrode material for high-performance supercapacitors

et al. 2016

Self Cite

View full text Add to dashboard Cite

show abstract

“…The CF-A-N samples were prepared from CF-A7/1 fibers by treating them with pure ammonia gas at a temperature of 600°C for 2 h (CF-A7/1-N600/2) and at 700°C for 1 h (CF-A7/1-N700/1) [7]. The experiments were conducted in a horizontal furnace under an ammonia gas flow of 9 L h À1 .…”

Section: Synthesis Of N-enriched Activated Carbon Fibersmentioning

confidence: 99%

“…The SF-N samples were prepared by direct ammonization of stabilized fibers at 800°C for 0.5 h (SF-N800/0.5) or 1 h (SF-N800/1) [7].…”

Section: Synthesis Of N-enriched Activated Carbon Fibersmentioning

confidence: 99%

See 1 more Smart Citation

CO2 adsorption capacity and kinetics in nitrogen-enriched activated carbon fibers prepared by different methods

Díez

Álvarez

Granda

et al. 2015

Chemical Engineering Journal

View full text Add to dashboard Cite

“…The microporous carbon has high specific surface area and potential. It also possesses narrow micropore distribution characteristics [14][15][16][17]. Melamine is a nitrogen rich compound, which is easy to handle.…”

Section: Introductionmentioning

confidence: 99%

Effect of microporosity on nitrogen-doped microporous carbons for electrode of supercapacitor

Cho¹,

Lee²,

Park³

2014

Carbon letters

View full text Add to dashboard Cite

Nitrogen-doped microporous carbons were prepared using a polyvinylidene fluoride/ melamine mixture. The electrochemical performance of the nitrogen-doped microporous carbons after being subjected to different carbonization conditions was investigated. The nitrogen to carbon ratio and specific surface area decreased with an increase in the carbonization temperature. However, the maximum specific capacitance of 208 F/g was obtained at a carbonization temperature of 800°C because it produced the highest microporosity.

show abstract

High temperature ammonia treatment of pitch particulates and fibers for nitrogen enriched microporous carbons

Cited by 32 publications

References 27 publications

Nitrogen-containing chitosan-based carbon as an electrode material for high-performance supercapacitors

Nitrogen-containing chitosan-based carbon as an electrode material for high-performance supercapacitors

CO2 adsorption capacity and kinetics in nitrogen-enriched activated carbon fibers prepared by different methods

Effect of microporosity on nitrogen-doped microporous carbons for electrode of supercapacitor

Contact Info

Product

Resources

About