Chitosan-based highly activated carbons for hydrogen storage

Wróbel-Iwaniec, Iwona; Díez, Noel; Gryglewicz, Grażyna

doi:10.1016/j.ijhydene.2015.03.034

Cited by 107 publications

(57 citation statements)

References 40 publications

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“…In literature, a close correlation between the micropore volume and the hydrogen adsorption is reported [24,26,27,36,37]. In order to shine some light on it, in Fig.…”

Section: Discussionmentioning

confidence: 64%

Liquid-like hydrogen in the micropores of commercial activated carbons

Minuto

Policicchio

Aloise

et al. 2015

International Journal of Hydrogen Energy

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“…In literature, a close correlation between the micropore volume and the hydrogen adsorption is reported [24,26,27,36,37]. In order to shine some light on it, in Fig.…”

Section: Discussionmentioning

confidence: 64%

Liquid-like hydrogen in the micropores of commercial activated carbons

Minuto

Policicchio

Aloise

et al. 2015

International Journal of Hydrogen Energy

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“…3, Table 2), which exists as positively charged groups that enhance electron transfer at high scan rates. It is remarkable that the surface capacitance values of the ACs obtained from chitosan by activation with CO 2 are almost twice as high as those of highly porous chitosan-based KOH from the same precursor [27]. This feature is very desirable from the point of view of implementing porous carbon materials as supercapacitor electrode.…”

Section: Electrochemical Performancementioning

confidence: 99%

“…Because chitin is produced in huge amounts as a by-product in the food industry, its use as a precursor for carbon materials is interesting from economic and environmental perspectives. The preparation of ACs by the chemical activation of chitosan chars using Na 2 CO 3 , K 2 CO 3 , ZnCl 2 , or KOH as activating agents has been reported [24][25][26][27][28][29]. However, only limited investigations of their use as electrode materials for supercapacitors have been reported.…”

Section: Introductionmentioning

confidence: 99%

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

et al. 2016

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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

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“…The nitrogen and hydrogen adsorption data were obtained and treated as described elsewhere (Zhao et al 2011;Wróbel-Iwaniec et al 2015;Zhao et al 2016). A Micrometrics ASAP 2020 automatic apparatus (Micromeritics, Co., USA) was used to obtain the N2 and hydrogen isotherms.…”

Section: Nitrogen Physisorption and Hydrogen Storage Performancementioning

confidence: 99%

“…It can be used as fuel for cars, light trucks, ships, airplanes, and trains and to generate electricity for heating and manufacturing (Zhao et al 2013;Wróbel-Iwaniec et al 2015). However, the greatest problem associated with hydrogen is the storage method.…”

Section: Introductionmentioning

confidence: 99%

Hydrothermal Doping of Nitrogen in Bamboo-Based Super Activated Carbon for Hydrogen Storage

et al. 2017

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N-doped microporous activated carbons were synthesized by hydrothermal doping with ammonia as the nitrogen precursor; the chemical, structural, and hydrogen storage properties of the developed activated carbons (ACs) were also examined. The results showed that this method is an effective way of preparing microporous activated carbons with high surface area. Both the surface areas and the N contents of ACs were increased after hydrothermal doping, and hence, the hydrogen storage capacities were improved. The hydrogen storage capacity of the N-doped ACs was 3.10 wt.% at 77 K and 1 bar, showing an enhancement factor of 1.13 and corresponding to the NAC with both highest surface area (3485 m 2 /g) and N content (2.2 wt.%). Statistical analysis showed that both the N content and surface area had positive contributions to the hydrogen storage, and it also could be predicted by the linear model from the N content and surface area. These results were among the best in hydrogen storage carbon materials, and the high hydrogen storage capacities were attributed to the high surface area.

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Chitosan-based highly activated carbons for hydrogen storage

Cited by 107 publications

References 40 publications

Liquid-like hydrogen in the micropores of commercial activated carbons

Liquid-like hydrogen in the micropores of commercial activated carbons

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

Hydrothermal Doping of Nitrogen in Bamboo-Based Super Activated Carbon for Hydrogen Storage

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