Nitrogen-containing mesoporous carbons with high capacitive properties derived from a gelatin biomolecule

Olejniczak, Andrzej; Lezanska, M.; Pacuła, Aleksandra; Nowak, Paweł; Włoch, Jerzy; Łukaszewicz, Jerzy P.

doi:10.1016/j.carbon.2015.04.025

Cited by 43 publications

(26 citation statements)

References 55 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This can be ascribed to the fact that the pseudo‐capacitance contribution was weakened in KOH aqueous electrolyte due to the lack of protons for the basic functionalities to undergo redox reactions,, which was demonstrated by the shape of CV curves recorded in acidic and alkaline mediums. This phenomenon is also confirmed in the literatures ,, . However, the rate capability under acidic condition was rather moderate compared with that of KOH electrolyte.…”

Section: Resultssupporting

confidence: 88%

“…However, the rate capability under acidic condition was rather moderate compared with that of KOH electrolyte. The capacitance value of AMFGW at 20 A g −1 were 272 F g −1 in 1 M H 2 SO 4 , considerably lower than that of KOH electrolyte, indicating that faradaic redox reactions were not as fast as EDLC during the quick charge/discharge operation ,. Actually, all the AMFGW samples in this study demonstrate the high‐level supercapacitive performance (Table S2), and the capacitance behavior of the optimal AMFGW is highly comparable with or even higher than those of previously reported carbonaceous electrode materials in aqueous electrolytes summarized in Table S3.…”

Section: Resultssupporting

confidence: 69%

See 1 more Smart Citation

Rational Design of Highly Conductive Nitrogen‐Doped Hollow Carbon Microtubes Derived from Willow Catkin for Supercapacitor Applications

et al. 2019

View full text Add to dashboard Cite

The rational design of carbon materials with high electrical conductivity, low tortuosity, large specific surface area, and sufficient heteroatom doping for high-performance supercapacitor application is highly desired but remains as a major challenge. Herein, by templating the natural microtubular and thin-walled structure of willow catkin, a highly conductive nitrogen-doped hollow carbon microtube material was synthesized through an integrated procedure including polymerization, pyrolysis, and activation. Robust N-doped crosslinked graphene was grafted on the internal and external walls of carbonized hollow catkin to form a sandwich structure of the derived carbon. The obtained carbon microtubes exhibit a large specific surface area (2608 m 2 g À 1 ), short and unimpeded ion-diffusion paths, high-level heteroatom doping (O: 12.5 at %, N: 3.4 at %), and excellent electrical conductivity (128 S m À 1 ). Benefitting from its desirable textural properties and favorable elemental composition, the derived electrode, without the addition of conductive additives, delivers impressive capacitance values of 408 F g À 1 (0.5 A g À 1 ) in 6 M KOH electrolyte and 420.8 F g À 1 (1 A g À 1 ) in 1 M H 2 SO 4 , as well as an outstanding rate capability and excellent cycling stability. In addition, the assembled symmetric supercapacitor displays an ultrahigh energy density of 27.3 Wh kg À 1 at 182 W kg À 1 in 1 M Na 2 SO 4 electrolyte. These advanced characteristics ensure the carbon microtubes hold great promise for energy storage/conversion applications.

show abstract

Section: Resultssupporting

confidence: 88%

Section: Resultssupporting

confidence: 69%

Rational Design of Highly Conductive Nitrogen‐Doped Hollow Carbon Microtubes Derived from Willow Catkin for Supercapacitor Applications

et al. 2019

View full text Add to dashboard Cite

show abstract

“…The effect can be compared to the step in capacitance in acidic solution observed for example in mesoporous hetero-carbon materials obtained from gelatin carbonisation with the help of a silica template. 40 This is a Figure 5C) revealing some "charge diffusion" as well as a capacitive element dominating at very low frequencies (see Table 1). At pH 2 the capacitance can be extrapolated to 8.8 mF for 60 g cPIM equivalent to an approximate "supercapacitance" of 146 Fg -1 .…”

Section: Cpim Film Electrodes Ii: Voltammetry and Capacitive Chargingmentioning

confidence: 91%

Intrinsically Microporous Polymer Retains Porosity in Vacuum Thermolysis to Electroactive Heterocarbon

Rong

Sanchez-Fernandez

et al. 2015

Langmuir

View full text Add to dashboard Cite

Vacuum carbonization of organic precursors usually causes considerable structural damage and collapse of morphological features. However, for a polymer with intrinsic microporosity (PIM-EA-TB with a Brunauer-Emmet-Teller (BET) surface area of 1027 m(2)g(-1)), it is shown here that the rigidity of the molecular backbone is retained even during 500 °C vacuum carbonization, yielding a novel type of microporous heterocarbon (either as powder or as thin film membrane) with properties between those of a conducting polymer and those of a carbon. After carbonization, the scanning electron microscopy (SEM) morphology and the small-angle X-ray scattering (SAXS) Guinier radius remain largely unchanged as does the cumulative pore volume. However, the BET surface area is decreased to 242 m(2)g(-1), but microporosity is considerably increased. The new material is shown to exhibit noticeable electrochemical features including two pH-dependent capacitance domains switching from ca. 33 Fg(-1) (when oxidized) to ca. 147 Fg(-1) (when reduced), a low electron transfer reactivity toward oxygen and hydrogen peroxide, and a four-point-probe resistivity (dry) of approximately 40 MΩ/square for a 1-2 μm thick film.

show abstract

“…However, the nitrogen content, which was equal to 0.88 at %, was low. This shortcoming was omitted by Olejniczak et al [ 39 ], who also manufactured nitrogen-rich mesoporous carbons from gelatin supplemented with colloidal silica as a hard template. The obtained materials were mesoporous, and had a very high total pore volume of up to 4.38 cm 3 /g.…”

Section: Introductionmentioning

confidence: 99%

Marine and Freshwater Feedstocks as a Precursor for Nitrogen-Containing Carbons: A Review

Ilnicka

Łukaszewicz

2018

Marine Drugs

View full text Add to dashboard Cite

Marine-derived as well as freshwater feedstock offers important benefits, such as abundance, morphological and structural variety, and the presence of multiple elements, including nitrogen and carbon. Therefore, these renewal resources may be useful for obtaining N- and C-containing materials that can be manufactured by various methods, such as pyrolysis and hydrothermal processes supported by means of chemical and physical activators. However, every synthesis concept relies on an efficient transfer of nitrogen and carbon from marine/freshwater feedstock to the final product. This paper reviews the advantages of marine feedstock over synthetic and natural but non-marine resources as precursors for the manufacturing of N-doped activated carbons. The manufacturing procedure influences some crucial properties of nitrogen-doped carbon materials, such as pore structure and the chemical composition of the surface. An extensive review is given on the relationship between carbon materials manufacturing from marine feedstock and the elemental content of nitrogen, together with a description of the chemical bonding of nitrogen atoms at the surface. N-doped carbons may serve as effective adsorbents for the removal of pollutants from the gas or liquid phase. Non-recognized areas of adsorption-based applications for nitrogen-doped carbons are presented, too. The paper proves that nitrogen-doped carbon materials belong to most of the prospective electrode materials for electrochemical energy conversion and storage technologies such as fuel cells, air–metal batteries, and supercapacitors, as well as for bioimaging. The reviewed material belongs to the widely understood field of marine biotechnology in relation to marine natural products.

show abstract

Nitrogen-containing mesoporous carbons with high capacitive properties derived from a gelatin biomolecule

Cited by 43 publications

References 55 publications

Rational Design of Highly Conductive Nitrogen‐Doped Hollow Carbon Microtubes Derived from Willow Catkin for Supercapacitor Applications

Rational Design of Highly Conductive Nitrogen‐Doped Hollow Carbon Microtubes Derived from Willow Catkin for Supercapacitor Applications

Intrinsically Microporous Polymer Retains Porosity in Vacuum Thermolysis to Electroactive Heterocarbon

Marine and Freshwater Feedstocks as a Precursor for Nitrogen-Containing Carbons: A Review

Contact Info

Product

Resources

About