Heavily nitrogen doped, graphene supercapacitor from silk cocoon

Sahu, Vikrant; Grover, Shivani; Tulachan, Brindan; Sharma, Meenakshi; Srivastava, Gaurav; Roy, Madhumita; Saxena, Manav; Sethy, Niroj Kumar; Bhargava, Kalpana; Philip, Deepu; Kim, Han Sung; Singh, Gurmeet; Singh, Sushil Kumar; Das, Mainak; Sharma, Raj Kishore

doi:10.1016/j.electacta.2015.02.019

Cited by 179 publications

(97 citation statements)

References 69 publications

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“…XPS narrow spectrum corresponding to nitrogen (N1 s) in four samples are shown in Fig. 6i-l, peaks around 397 and 399.9 eV correspond to nitride bond and nitrogen bond in an organic matrix, respectively, a peak around 398 eV is seen in RGO obtained from Tassar cocoon corresponds to cyanide bond [9]. In earlier works with carbon materials, similar XPS spectra have been observed [26][27][28].…”

Section: Resultssupporting

confidence: 60%

“…Tassar cocoon, Mulberry cocoon and, Tassar silk thread show sheet-like structure as shown in Fig. 4e-g, respectively [7,9], and Jute exhibits thin tube-like structure as shown in Fig. 4h [6].…”

Section: Resultsmentioning

confidence: 99%

“…6e-h. The C1 s spectrum revealed the presence of three types of carbon bonds: C-C/ C=C (284.6 eV) (C-) C-N (285.9 eV), C=C-N (286.5 eV), C=N/C=O (287.9 eV) and O-C=O (289.0 eV), respectively [9,19]. XPS narrow spectrum corresponding to nitrogen (N1 s) in four samples are shown in Fig.…”

Section: Resultsmentioning

confidence: 99%

“…The 2D band is most likely suppressed by "Pauli blocking effect" [23][24][25][26][27][28]. FTIR spectra are shown in [6,7,9].…”

Section: Resultsmentioning

confidence: 99%

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Biocharring of natural fibers of insect and plant origin: a green route for the production of ‘carbon-based charge storage nanomaterials’

Dubey

Jangir

Verma

et al. 2018

Mater Renew Sustain Energy

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Futuristic energy materials are expected to be biocompatible, green, sustainable and economical. One of the ways to develop such energy storage materials is by utilizing natural sources such as plants, animals, and insects. Autotrophs fix nitrogen and carbon in the atmosphere through rhizobium and photosynthesis, respectively, which are later consumed by animals and insects as energy sources. Biocharring these plants and insects derived products that could help us regain this carbon and nitrogen in the form of biocharred energy materials. Insect-derived Tassar cocoon, Mulberry cocoon, and Tassar silk thread give N-doped carbon matrix upon biocharring which is further processed to obtain reduced graphene oxide, whereas plant-derived Jute gives a pure carbon matrix on biocharring, all four materials show typical properties of charge storage. Exploring further on these natural charge storage materials will help the energy industries to design green charge storage systems. Further, such an approach in future will open up new avenues of business for silk and jute farmers of the world.

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Section: Resultssupporting

confidence: 60%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

“…The 2D band is most likely suppressed by "Pauli blocking effect" [23][24][25][26][27][28]. FTIR spectra are shown in [6,7,9].…”

Section: Resultsmentioning

confidence: 99%

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Biocharring of natural fibers of insect and plant origin: a green route for the production of ‘carbon-based charge storage nanomaterials’

Dubey

Jangir

Verma

et al. 2018

Mater Renew Sustain Energy

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“…Biochar has demonstrated promising potential in the field of supercapacitors. Some of the notable biomass precursors that have been prepared were corn grains [8], cypress [9], distillers dried grains with solubles (DDGS) [10], palm oil empty fruit bunch (EFB) [11], red cedar wood [12], rice husk, silk cocoon [13], and sunflower seed shell [14]. Ultimately, to achieve highly stable reversible electrical energy storage capacity and high power density in supercapacitors, carbon materials to fabricate electrodes, should possess a hierarchical mesoporous structure with high surface, high conductivity, suitable pore size distribution and long-term cyclability.…”

Section: Introductionmentioning

confidence: 99%

Physical and Electrochemical Characterization of Palm Kernel Shell Biochar (PKSB) as Supercapacitor

Ghani

Fernandez

Halele

et al. 2016

MATEC Web of Conferences

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Abstract.A potential low cost and environmentally friendly supercapacitor has been prepared from Palm Kernel Shell Biochar (PKSB). In this study, physical and electrochemical properties of raw, activated and chemical treated (potassium hydroxide (KOH)) as supercapacitors such as high carbon content, high charge storage capacity and stable were evaluated. For physical analyses, the scanning electron microscopy (SEM) was used to study the surface morphology and surface area and porosity were measured using Brunaurer-Emmert-Teller (BET). The chemical treated PKSB shows the highest surface area values of 55.15 m 2 /g as compared to raw and activated samples with surface area are 0.17 m 2 /g and 19.32 m 2 /g, respectively. This is verified by in enhancement of capacitance achieved from 1.76 x10 -3 Fg -1 for the activated biochar and 1.87x10 -6 Fg -1 for untreated PKSB showed by Raman spectroscopy. This enhancement reflected the charge storage capacity is attributed to the creation of broad distribution in pore size and a larger surface area. In addition, this phenomenon also supported by the electrochemical profiles through cyclic voltammogram (CV) measured by Potentiostat-Gavanostat (EIS). CV of the treated PKSB gave better square shape than the activated and raw biochar samples. These characterizations conclude that the raw palm kernel biochar need further treatment to become supercapacitor electrodes to replace activated carbon.

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