Synthesis and characterization of boron doped graphene nanosheets for supercapacitor applications

Thirumal, V.; Pandurangan, A.; Jayavel, R.; Ilangovan, R.

doi:10.1016/j.synthmet.2016.07.011

Cited by 174 publications

(66 citation statements)

References 42 publications

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“…Also, SAED pattern of BNG shows a ring like diffraction pattern with dispersed bright spots [32]. SAED pattern are consistent with previous studies [12,33]. Elemental mapping is also performed in order to prove the existence of N and B as shown in figure 5.…”

Section: Temsupporting

confidence: 87%

“…Various elements such as Nitrogen (N), Sulfur (S), Boron (B), Phospor (P), Oxygen (O) and Fluorine (F) can be doped into graphene. B and N are mostly preferred chemical dopants for graphene since they have similar atomic dimensions with that of C and moreover they can form strong bonds with C. B and N doped graphene can be used in several applications area such as fuel cells, sensors, spin filter devices and lithium ion batteries [2,3,12].…”

Section: Introductionmentioning

confidence: 99%

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Boron and nitrogen doping in graphene: an experimental and density functional theory (DFT) study

et al. 2020

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Boron (B) and Nitrogen (N) doped few layer graphene (BNG) is directly synthesized via electric arc discharge (EAD) method. NH 3 and BCl 3 gas mixtures are used in the synthesis atmosphere. Raman spectroscopy is used to determine graphene's purity and number of layers. The investigation of structure and morphology of pristine graphene and BNG are carried out via Transmission Electron Microscopy (TEM). The presence of B and N in the structure of graphene is detected by Energy Dispersive X-ray Spectroscopy (EDS) analysis. Elemental mapping show that N and B are distributed homogeneously in the graphene structure. It is observed that doping process did not affect the positions of the D, G and 2D bands in the Raman spectroscopy. The effect of doping on the number of layers of graphene is found negligible. TEM results exhibit that pristine graphene and BNG have 5 to 6 layers. Besides, the theoretical calculations based on Density Functional Theory (DFT) are employed to support experimental studies. Theoretical results based on DFT showed that bonding of B and N is favorable.

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Section: Temsupporting

confidence: 87%

Section: Introductionmentioning

confidence: 99%

Boron and nitrogen doping in graphene: an experimental and density functional theory (DFT) study

et al. 2020

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“…These results are excellently supported by the literature. [41,42] HR-TEM images of SBGO-(1 : 2) are shown in Figure 4a-b clearly indicating that thin layered B-doped graphene nanosheets are formed. Figure 5a-c depicts the FE-SEM images of SBGO-(1 : 2), SBGO-(1 : 1) and SBGO-(2 : 1), respectively.…”

Section: Resultsmentioning

confidence: 97%

Synthesis of Boron‐Doped Graphene by Supercritical Fluid Processing and its Application in Symmetric Supercapacitors using Various Electrolytes

et al. 2019

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Doping of heteroatoms on graphene networks is an efficient way of modifying both, chemical and electrochemical properties of graphene. Here, the preparation of boron doped graphene was achieved by supercritical fluid processing using sodium tetraborate as a boron source. The phase purity, structure and surface morphology of all the prepared materials were characterised by XRD, Raman spectra, FE-SEM and HR-TEM. The presence of boron bearing functionalities and type of B-doping are determined by FT-IR spectroscopy and XPS, respectively. From the different weight combination of B-source along with graphene oxide, the B-doped graphene obtained from B-source and graphene oxide are in 1 : 2 weight ratio showed an enhanced capacitive behaviour over reduced graphene oxide with an improved specific capacitance value of 270 F/g at 1 A/g and revealed a superior cycling stability of 93 % retention over 10000 cycles at 10 A/g. To appreciate the device performance, the full cell studies was performed in three different electrolytes and the energy density obtained using 1ethyl-3-methyl imidazolium tetrafluoroborate (EMIMBF 4 ) as ionic liquid electrolyte is found to be 39.3 Wh/kg which is higher than both 20 % KOH solution (5.1 Wh/kg) and 1 M TEABF 4 in acetonitrile (18.6 Wh/kg).[a] S.

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“…The introduction of heteroatoms B into the hexagonal crystalline structure might result in the change in the graphitic interlayer spacing. 28 Raman spectra were used to further conrm the graphitic structure, and the results are shown in Fig. 4.…”

Section: Resultsmentioning

confidence: 99%

“…The FT-IR spectra of WPU-GO and WPU-GO-Fe only showed three peaks at around 1070 cm À1 , 1390 cm À1 , and 1635 cm À1 , corresponding to C-O stretching vibration, C-N stretching vibration and C]C stretching vibration, respectively. 28,32 In the FT-IR spectra of WPU-GO-B, the peaks at 1053 cm À1 , 1109 cm À1 , 1168 cm À1 , 1270 cm À1 , 1385 cm À1 , and 1632 cm À1 corresponded to the stretching vibrations of C-O, B-C, B-O, B-N, C-N, and C]C, respectively. 28,[32][33][34] It conrmed the B/N coping in the carbon material.…”

Section: Resultsmentioning

confidence: 99%

Boron/nitrogen co-doped carbon synthesized from waterborne polyurethane and graphene oxide composite for supercapacitors

Qin

Zhang

et al. 2019

RSC Adv.

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Synthesis and characterization of boron doped graphene nanosheets for supercapacitor applications

Cited by 174 publications

References 42 publications

Boron and nitrogen doping in graphene: an experimental and density functional theory (DFT) study

Boron and nitrogen doping in graphene: an experimental and density functional theory (DFT) study

Synthesis of Boron‐Doped Graphene by Supercritical Fluid Processing and its Application in Symmetric Supercapacitors using Various Electrolytes

Boron/nitrogen co-doped carbon synthesized from waterborne polyurethane and graphene oxide composite for supercapacitors

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