Plasma-induced highly efficient synthesis of boron doped reduced graphene oxide for supercapacitors

Li, Shaobo; Wang, ZF; Jiang, Hanmei; Zhang, Limei; Ren, Jingzheng; Zheng, Mingtao; Dong, Lichun; Sun, Luyi

doi:10.1039/c6cc04052g

Cited by 107 publications

(47 citation statements)

References 43 publications

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“…Work on dry plasma reduction of surfaces by plasma jet [32] and radio frequency (RF) discharges [48] has also been reported. [50] Further,s imilars ignificant progress in dry plasma reduction by DBD was reported by Chuang et al, [51] who used atmospherich ydrogen/nitrogen plasma to treat TiO 2 powders.H owever the DBD systems presented in Refs. Therefore, if plasma is to be used in such processes, its source should generate large-area plasma [49] with ah ighd egree of homogeneity and diffusivity.L ie tal.…”

Section: Introductionmentioning

confidence: 64%

“…However,m ost of the atmospheric plasma sourceso perate with as mall area of generated plasma and are suited to only laboratory purposes.T he emerging fieldo ff lexible electronics requires high throughputm anufacturing with high efficiencies and low processing times. [50] and [ 51] involved certaind rawbacks if continuous treatment of large areas, particularly on flexible surfaces, were to be envisaged. employed atmosphericd ielectric barrierd ischarge (DBD)i nacoaxial electrode configuration to produce boron-doped rGO by using an H 2 plasma process.…”

Section: Introductionmentioning

confidence: 99%

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Atmospheric Dry Hydrogen Plasma Reduction of Inkjet‐Printed Flexible Graphene Oxide Electrodes

et al. 2018

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This study concerns a low-temperature method for dry hydrogen plasma reduction of inkjet-printed flexible graphene oxide (GO) electrodes, an approach compatible with processes envisaged for the manufacture of flexible electronics. The processing of GO to reduced graphene oxide (rGO) was performed in 1-64 s, and sp /sp +sp carbon concentration increased from approximately 20 % to 90 %. Since the plasma reduction was associated with an etching effect, the optimal reduction time occurred between 8 and 16 s. The surface showed good mechanical stability when deposited on polyethylene terephthalate flexible foils and significantly lower sheet resistance after plasma reduction. This method for dry plasma reduction could be important for large-area hydrogenation and reduction of GO flexible surfaces, with present and potential applications in a wide variety of emerging technologies.

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Section: Introductionmentioning

confidence: 64%

Section: Introductionmentioning

confidence: 99%

Atmospheric Dry Hydrogen Plasma Reduction of Inkjet‐Printed Flexible Graphene Oxide Electrodes

et al. 2018

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“…In 2016, Shaobo et al reported boron doped reduced GO (B‐rGO) synthesized from a facile dielectric barrier discharge (DBD) plasma approach using boric acid as a boron precursor under ambient conditions. The boron content in B‐rGO was found to be 1.4%.…”

Section: Heteroatom‐doped Graphenementioning

confidence: 99%

“…In a case where B-doped graphene is synthesized at a lower growth temperature (900°C-1200°C), different boron configurations such as boronic acids, boronic, and borinic esters ( Figure 5) are produced. 258 In 2016, Shaobo et al 259 reported boron doped reduced GO (B-rGO) synthesized from a facile dielectric barrier discharge (DBD) plasma approach using boric acid as a boron precursor under ambient conditions. The boron content in B-rGO was found to be 1.4%.…”

Section: Boron-doped Graphenementioning

confidence: 99%

Heteroatom-doped graphene and its application as a counter electrode in dye-sensitized solar cells

2018

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Summary The most frequently used counter electrode (CE) in dye‐sensitized solar cells (DSSCs) is platinum on fluorine‐doped tin oxide glass. This electrode has excellent electrical conductivity, chemical stability, and high electrocatalytic affinity for the reduction of triiodide. However, the high cost of metallic platinum and the poor electrochemical stability pose a major drawback in the commercial production. This has necessitated a search for a non‐precious metal and metal‐free electrocatalyst that demonstrates better catalytic activity and longer electrochemical stability for practical use in DSSCs. Graphene has been at the centre of attention due to its excellent optoelectronic properties. However, a defect‐free graphene sheet is not suitable as a CE in DSSCs, because of its neutral polarity which often restricts efficient charge transfer at the graphene/liquid interface, irrespective of the high in‐plane charge mobility. Hence, heteroatom‐doped graphene‐based CEs are being developed with the aim to balance electrical conductivity for efficient charge transfer and charge polarization for enhanced reduction activity of redox couples simultaneously. The elements commonly used in chemical doping of graphene are nitrogen, oxygen, boron, sulfur, and phosphorus. Halogens have also recently shown great promise. It has been demonstrated that edge‐selective heteroatom‐doping of graphene imparts both efficient in‐plane charge transfers and polarity, thereby enhancing electrocatalytic activity. Thus, heteroatom‐doped graphene serves as a good material to replace conventional electrodes and enhance power conversion efficiency in DSSCs. The focus is to reduce the cost of DSSCs. This review explores the performance of DSSCs, factors that influence the power conversion efficiency, and various physicochemical properties of graphene. It further outlines current progress on the synthetic approaches for chemical doping (substitutional and surface transfer doping) of graphene and graphene oxide with different heteroatoms in order to fine‐tune the electronic properties. The use of heteroatom‐doped graphene as a CE in DSSCs and how it improves the photovoltaic performance of cells is discussed.

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“…[19] To furnish a reasonable solution for this issue, doping of heteroatom over graphene framework is an effective approach. [24] Based on theoretical studies, B-doped graphene is reported as promising electrode for potassium ion battery. [20] Niu et al synthesized the boron doped graphene having boron content of 4.7 at % via pyrolysis between graphene oxide and boric acid at 900°C and achieved the specific capacitance of 173 F/g at 0.5 A/g current density.…”

Section: Introductionmentioning

confidence: 99%

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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Plasma-induced highly efficient synthesis of boron doped reduced graphene oxide for supercapacitors

Cited by 107 publications

References 43 publications

Atmospheric Dry Hydrogen Plasma Reduction of Inkjet‐Printed Flexible Graphene Oxide Electrodes

Atmospheric Dry Hydrogen Plasma Reduction of Inkjet‐Printed Flexible Graphene Oxide Electrodes

Heteroatom-doped graphene and its application as a counter electrode in dye-sensitized solar cells

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

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