Electrochemical behavior of boron-doped mesoporous graphene depending on its boron configuration

Nankya, Rosalynn; Lee, Jihye; Opar, David O.; Jung, Hyun

doi:10.1016/j.apsusc.2019.06.015

Cited by 63 publications

(26 citation statements)

References 40 publications

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“…BC 3 and BC 2 O enhance electrical conductivity of the electrode and redox properties, while interfacial redox reactions on carbon surface are induced by BC 2 O and B 2 O 3 . [109,110] The reactive B-O groups make the surface hydrophilic and lead to the higher electrochemically active surface area, although the measured BET surface area is found to be lower in B-doped carbon structures than in its pristine counterpart. [111] Although B-doped mesoporous rGO (B-rGO) exhibits higher gravimetric capacitance of 336.4 F g −1 at 0.1 A g −1 in 6 m KOH versus a saturated calomel electrode (SCE), the rate performance is poor with respect to the rGO and calcined B-rGO under the same test conditions ( Table 1).…”

Section: Role Of B-configurations and B-contentmentioning

confidence: 99%

Heteroatom‐Doped and Oxygen‐Functionalized Nanocarbons for High‐Performance Supercapacitors

Ghosh

Barg

Jeong

et al. 2020

Advanced Energy Materials

434

237

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Electrochemical capacitors (best known as supercapacitors) are high‐performance energy storage devices featuring higher capacity than conventional capacitors and higher power densities than batteries, and are among the key enabling technologies of the clean energy future. This review focuses on performance enhancement of carbon‐based supercapacitors by doping other elements (heteroatoms) into the nanostructured carbon electrodes. The nanocarbon materials currently exist in all dimensionalities (from 0D quantum dots to 3D bulk materials) and show good stability and other properties in diverse electrode architectures. However, relatively low energy density and high manufacturing cost impede widespread commercial applications of nanocarbon‐based supercapacitors. Heteroatom doping into the carbon matrix is one of the most promising and versatile ways to enhance the device performance, yet the mechanisms of the doping effects still remain poorly understood. Here the effects of heteroatom doping by boron, nitrogen, sulfur, phosphorus, fluorine, chlorine, silicon, and functionalizing with oxygen on the elemental composition, structure, property, and performance relationships of nanocarbon electrodes are critically examined. The limitations of doping approaches are further discussed and guidelines for reporting the performance of heteroatom doped nanocarbon electrode‐based electrochemical capacitors are proposed. The current challenges and promising future directions for clean energy applications are discussed as well.

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Section: Role Of B-configurations and B-contentmentioning

confidence: 99%

Heteroatom‐Doped and Oxygen‐Functionalized Nanocarbons for High‐Performance Supercapacitors

Ghosh

Barg

Jeong

et al. 2020

Advanced Energy Materials

434

237

View full text Add to dashboard Cite

show abstract

“…The Raman spectrum of MG is shown in Figure (b), including the two characteristic peaks of graphene D and G bands that correspond to ~1340 cm −1 and 1586 cm −1 , respectively. The D band is associated with defects and the peak intensity was increased while the G band originated from the in‐plane vibration of sp 2 carbon‐bonded pairs . The relative intensity ratio I D / I G was 1.03, and it was related to structural defects such as boundaries, heteroatom doping, disorders, and vacancies .…”

Section: Resultsmentioning

confidence: 97%

“…Figure (a) shows the XRD patterns of MG, with a loss of GO peak ( 100 ) at approximately 12.8° due to the removal of oxygen‐containing functional groups and appearance of a broad ( 002 ) peak. This demonstrates the recovery of the graphitic structure and development of a few‐layered graphene . The Raman spectrum of MG is shown in Figure (b), including the two characteristic peaks of graphene D and G bands that correspond to ~1340 cm −1 and 1586 cm −1 , respectively.…”

Section: Resultsmentioning

confidence: 98%

“…This demonstrates the recovery of the graphitic structure and development of a few-layered graphene. 34,35 The Raman spectrum of MG is shown in Figure 1(b), including the two characteristic peaks of graphene D and G bands that correspond to~1340 cm −1 and 1586 cm −1 , respectively. The D band is associated with defects and the peak intensity was increased while the G band originated from the in-plane vibration of sp 2 carbon-bonded pairs.…”

Section: Resultsmentioning

confidence: 99%

“…The D band is associated with defects and the peak intensity was increased while the G band originated from the in-plane vibration of sp 2 carbon-bonded pairs. 35,36 The relative intensity ratio I D /I G was 1.03, and it was related to structural defects such as boundaries, heteroatom doping, disorders, and vacancies. 37 This finding indicates defects such as residual oxygen on the surface of MG.…”

Section: Resultsmentioning

confidence: 99%

See 2 more Smart Citations

Mesoporous Graphene‐Modified Electrode for Independent and Selective Detection of Dopamine in the Presence of High Concentration of Ascorbic Acid

Nankya

Opar

Jung

2019

Bulletin Korean Chem Soc

Self Cite

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Mesoporous graphene (MG) synthesized via a facile hydrothermal method using soft‐template, triblock copolymer P123 and graphene oxide was utilized for the detection of dopamine (DA) in the presence of ascorbic acid (AA). The structure and morphology of the obtained MG were analyzed by X‐ray diffraction (XRD), Raman spectroscopy, field emission scanning electron microscopy, high‐resolution transmission electron microscopy, and nitrogen adsorption–desorption isotherms. The obtained MG was dispersed in DMF solution and then drop‐casted on to a platinum plate. It was primarily tested for electrochemical sensing of biomolecules. Cyclic voltammetry and differential pulse voltammetry (DPV) were used to evaluate the electrochemical behaviors of MG on a platinum electrode. DPV facilitated selective and sensitive detection of DA in the presence of a high concentration of AA. MG showed a faster electron transfer rate and increased current density. It exhibited good sensitivity, selectivity, and a linear relationship with concentration, with a 7 μM limit of detection, suggesting that MG is a promising material for electrochemical sensing applications.

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Recent Advances in Carbon‐Based Electrodes for Energy Storage and Conversion

et al. 2023

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Carbon-based nanomaterials, including graphene, fullerenes, and carbon nanotubes, are attracting significant attention as promising materials for next-generation energy storage and conversion applications. They possess unique physicochemical properties, such as structural stability and flexibility, high porosity, and tunable physicochemical features, which render them well suited in these hot research fields. Technological advances at atomic and electronic levels are crucial for developing more efficient and durable devices. This comprehensive review provides a state-of-the-art overview of these advanced carbon-based nanomaterials for various energy storage and conversion applications, focusing on supercapacitors, lithium as well as sodium-ion batteries, and hydrogen evolution reactions. Particular emphasis is placed on the strategies employed to enhance performance through nonmetallic elemental doping of N, B, S, and P in either individual doping or codoping, as well as structural modifications such as the creation of defect sites, edge functionalization, and inter-layer distance manipulation, aiming to provide the general guidelines for designing these devices by the above approaches to achieve optimal performance. Furthermore, this review delves into the challenges and future prospects for the advancement of carbon-based electrodes in energy storage and conversion.

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Electrochemical behavior of boron-doped mesoporous graphene depending on its boron configuration

Cited by 63 publications

References 40 publications

Heteroatom‐Doped and Oxygen‐Functionalized Nanocarbons for High‐Performance Supercapacitors

Heteroatom‐Doped and Oxygen‐Functionalized Nanocarbons for High‐Performance Supercapacitors

Mesoporous Graphene‐Modified Electrode for Independent and Selective Detection of Dopamine in the Presence of High Concentration of Ascorbic Acid

Recent Advances in Carbon‐Based Electrodes for Energy Storage and Conversion

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