Impregnation assisted synthesis of 3D nitrogen-doped porous carbon with high capacitance

Pu, Jun; Li, Chaowei; Tang, Lei; Li, Taotao; Lin, Ling; Zhang, Kai; Xu, Yancui; Li, Qingwen; Yao, Yagang

doi:10.1016/j.carbon.2015.07.058

Cited by 62 publications

(24 citation statements)

References 58 publications

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“…Pyrrolic nitrogen incorporates into a five membered ring and connects with two neighboring carbon atoms, which contributes two p-electrons to π system. Pyridine nitrogen at the edge of carbon plane incorporates into a six membered ring and also connects with two neighboring carbon atoms, donating one p-electron to the aromatic π system [44]. Quaternary nitrogen provides the nitrogen atoms to replace carbon atom in the carbon lattice, and this leads to its connecting and sp3…”

Section: Microstructural Characterizationmentioning

confidence: 99%

“…hybridizing with three neighboring carbon atoms, which has a significant effect on the electrochemical performance of the carbon material [44,47]. …”

Section: Microstructural Characterizationmentioning

confidence: 99%

“…In detail, these three peaks at 531.7 ± 0.2 eV, 533.5 ± 0.2 eV, and 534.9 ± 0.2 eV represent OH/C-O (O-1), C=O (O-2), and C-O-OH (O-3) groups, respectively[44,45]. These results indicate that there are some lactone, carboxyl and quinone groups on the surface of CNW2[46].…”

mentioning

confidence: 99%

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Nitrogen doped carbon nanowires prepared from polypyrrole nanowires for potential application in supercapacitors

Wang

Qiu

et al. 2016

Journal of Electroanalytical Chemistry

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Section: Microstructural Characterizationmentioning

confidence: 99%

“…hybridizing with three neighboring carbon atoms, which has a significant effect on the electrochemical performance of the carbon material [44,47]. …”

Section: Microstructural Characterizationmentioning

confidence: 99%

See 1 more Smart Citation

Nitrogen doped carbon nanowires prepared from polypyrrole nanowires for potential application in supercapacitors

Wang

Qiu

et al. 2016

Journal of Electroanalytical Chemistry

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“…reported that nitrogen‐doping of CDC leads to an enhanced specific capacitance for certain ionic liquids, such as EMIM‐BF 4 , while there was no enhancement for organic electrolytes based on acetonitrile as the solvent . Also, other groups investigated nitrogen‐doped carbon materials made from different precursors and reported high specific energy of up to 64 Wh/kg (measured at a cell voltage of 3.2 V) ,,,. Yan et al.…”

Section: Introductionmentioning

confidence: 99%

Influence of Nitrogen‐Doping for Carbide‐Derived Carbons on the Supercapacitor Performance in an Organic Electrolyte and an Ionic Liquid

Krüner

Odenwald

Quade

et al. 2018

Batteries & Supercaps

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We investigated the influence of nitrogen groups on the electrochemical performance of carbide‐derived carbons by comparing materials with a similar pore structure with and without nitrogen‐doping. These materials were tested in a half‐cell and full‐cell supercapacitor setup with a conventional organic electrolyte (1 M tetraethylammonium tetrafluoroborate in acetonitrile) and an ionic liquid (1‐ethyl‐3‐methylimidazolium tetrafluoroborate). Varying the nitrogen content in the range of 1–7 mass % had no systematic influence on the energy storage capacity but a stronger impact on the rate handling ability. The highest specific capacitance in a half‐cell supercapacitor at a negative potential was 215 F/g in EMIM‐BF4. Using the best‐performing carbide‐derived carbon with and without nitrogen‐doping (i. e., by applying a synthesis temperature of 800 °C), the full‐cell performance was 174 F/g, which results in a high specific energy of 61 Wh/kg in EMIM‐BF4. For the same materials, the corresponding specific energy was about 30 Wh/kg when using the organic electrolyte.

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“…[36][37][38][39] The scanning electron microscopy (SEM) image in Figure 1a shows the synsthesized N-doped www.advelectronicmat.de graphene sheets with a large lateral size more than 10 µm under the optimized growth conditions (growth time: 120 min and NH 3 flow: 25 sccm). [40,41] Since these surface functional groups containing nitrogen benefit the hydrophilic ability of graphene, the smallest water contact angle of ≈40° was achieved on the graphene sheets with 5.2% N concentration according to the Figure 1d. Besides, the transmission electron microscopy (TEM) image together with a ring-like pattern of selected area electron diffraction (SAED) in Figure 1b and the Raman analysis ( Figure S5, Supporting Information) further confirm the high quality graphitic and polycrystalline structure.…”

mentioning

confidence: 97%

Water‐Soluble Hybrid Graphene Ink for Gravure‐Printed Planar Supercapacitors

Chang

Sai

et al. 2018

Adv Elect Materials

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efforts have been devoted to the design of graphene microstructures, most of graphene materials are difficult to be applied in all-solid-state planar supercapacitors because of their agglomerations due to the strong π-π interaction between the large basal planes and poor electrical conductivity in the fabricated microelectrodes. [13] This undesirable phenomenon significantly prevents the access of PVA-based gel electrolyte ions into the interplanar space, resulting in limited ion accessible surface area of graphene and sluggish ion transport kinetics so that there are lots of "dead surfaces" of graphene without contribution to the energy storage. [1] For reducing the graphene agglomerations, studies during the past few years were explored. Wu et al. used lithography to pattern reduced graphene oxide (RGO) microelectrodes for planar supercapacitors with areal capacitance around 0.32 mF cm −2 . [14] Meanwhile, Gao et al. directly used another laser writing to reduce graphene oxide (GO) paper and readily obtained a number of configurations for the RGO-based planar supercapacitors with an areal capacitance of 0.59 mF cm −2 . [15] El-Kady and Kaner further demonstrated a fabrication of graphene-based planar supercapacitors with an areal capacitance over 2.0 mF cm −2 by direct laser writing on graphite oxide films using a standard Light-Scribe DVD burner. [16] Although promising areal capacitances of graphene-based planar supercapacitors with fewer graphene agglomerations have been achieved by these microfabrication technologies, the global depositions of graphene material are usually required and patterned into interdigitated structures via etching or laser scribing, resulting in the complicated processing and wasting more graphene material.Selecting suitable microfabrication methods using proper graphene material is particularly crucial for enhancing the electrochemical performance of planar supercapacitors. As a powerful and cost efficient direct patterning method, printing technology attracts significant interest in graphene-based planar supercapacitors due to its simple processing and few material waste. [17][18][19] For example, Li et al., [13] Wang et al., [18] and Liu et al. [6] developed the full-inkjet-printing and screen printing for graphene-based planar supercapacitors. Although these two printing techniques provide the advantage of directly patterning the microelectrodes, to some extent, they usually face the risk of the nozzle clogging and nonuniform pattern when needing high resolution feature. Fortunately, gravure printing as one Flexible printed all-solid-state graphene-based planar supercapacitors have attracted great attentions for their potential applications in portable and wearable electronics. However, the limited ion accessible surface area and slow ion diffusion rate lead to low specific capacitance and poor rate performance. Increasing the diffussion of polyvinyl alcohol (PVA)-based gel electrolyte into the printed graphene microelectrodes is a great challenge for improving its energy storage...

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Impregnation assisted synthesis of 3D nitrogen-doped porous carbon with high capacitance

Cited by 62 publications

References 58 publications

Nitrogen doped carbon nanowires prepared from polypyrrole nanowires for potential application in supercapacitors

Nitrogen doped carbon nanowires prepared from polypyrrole nanowires for potential application in supercapacitors

Influence of Nitrogen‐Doping for Carbide‐Derived Carbons on the Supercapacitor Performance in an Organic Electrolyte and an Ionic Liquid

Water‐Soluble Hybrid Graphene Ink for Gravure‐Printed Planar Supercapacitors

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