Boron nitride/reduced graphene oxide nanocomposites as supercapacitors electrodes

Gao, Tao; Gong, Laijiang; Wang, Zhao; Yang, Zhongkui; Wu, Pan; He, Li; Zhang, Jie; Ou, Encai; Xiong, Yan; Xu, Weijian

doi:10.1016/j.matlet.2015.06.072

Cited by 41 publications

(23 citation statements)

References 15 publications

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“…Zhao et al. have demonstrated that MoS 2 modified GC electrodes result in the ORR occurring at −420 mV in alkaline conditions. GN modified GC electrodes resulted in the ORR occurring at −310 mV .…”

Section: Resultsmentioning

confidence: 99%

“…2D‐hBN is found in amorphous and crystalline forms , with crystalline 2D‐hBN containing strong σ bonds and weak van der Waals forces , resulting in a range of favourable thermal, mechanical, and chemical properties . Resultantly, 2D‐hBN has been widely researched in the field of electrochemistry for applications such as composites, dielectrics and optics . However, note that the bonding of 2D‐hBN is covalent and the electrons in the σ bond are localised towards nitrogen , whereas the π bonding present involves an empty p‐orbital of boron and a filled p‐orbital of nitrogen, with the nitrogen π electrons delocalised .…”

Section: Introductionmentioning

confidence: 83%

“…With the above insights in mind, we consider the ORR using crystalline hexagonal 2D‐hBN, a 2D nanomaterial comprising equal boron and nitrogen atoms arranged in a similar hexagonal structure in crystalline form to that of graphene (thus referred to as ‘white graphene’) . 2D‐hBN is found in amorphous and crystalline forms , with crystalline 2D‐hBN containing strong σ bonds and weak van der Waals forces , resulting in a range of favourable thermal, mechanical, and chemical properties . Resultantly, 2D‐hBN has been widely researched in the field of electrochemistry for applications such as composites, dielectrics and optics .…”

Section: Introductionmentioning

confidence: 99%

“…Resultantly, 2D‐hBN has been widely researched in the field of electrochemistry for applications such as composites, dielectrics and optics . However, note that the bonding of 2D‐hBN is covalent and the electrons in the σ bond are localised towards nitrogen , whereas the π bonding present involves an empty p‐orbital of boron and a filled p‐orbital of nitrogen, with the nitrogen π electrons delocalised . Such an electronic structure allows 2D‐hBN to be a good insulator in its solid form .…”

Section: Introductionmentioning

confidence: 99%

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2D Hexagonal Boron Nitride (2D‐hBN) Explored as a Potential Electrocatalyst for the Oxygen Reduction Reaction

et al. 2016

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[a] 1IntroductionAs the availability of naturale nergy resources depletes,i t has become increasingly important to finda lternative means of energyp roduction [1].T he most common alternativest of ossil fuels are renewable sources such as hydroelectric power and wind turbines,a nd for transportation purposes,e lectrolysers for fuel cells.T he latteri sa n electrochemical device that relies on the oxidation of af uel, such as methanol, at aw orking electrode (anode), while the protons liberated act as ar educinga gent to oxygen in the cathodicp art of the fuel cell. Research into proton exchange membrane (PEM) fuel cells,i nw hich the oxygen reduction reaction( ORR) occurs,i sd irected towardsi mproving power output, efficiency,a nd longevity,s uch that devices become viable for the transportation fuel cell market [ 2].TheO RR occurs at the cathode of PEM fuel cells and has proved to be problematic (dependent upon the catalyst utilised), primarily limiting the lifetimes of devices due to electrode fouling [3,4].F or example,P EM fuel cell degradation [2] is synonymous with the ORR due to the formationo fh ydrogen peroxide (H 2 O 2 )w hen using catalysts that reduce oxygen via at wo electron pathway [5].F urthermore, slow electront ransfer kinetics during the ORR can potentially result in a5 0% voltage loss and reduce the performance of aP EM fuel cell [2,6].T here Abstract:C rystalline2 Dh exagonal Boron Nitride( 2D-hBN) is explored as ap otential electrocatalyst towards the oxygen reduction reaction (ORR) when electrically wired via ad rop-casting approach upon ar ange of carbon based electrode surfaces;n amely,g lassy carbon (GC), boron-dopedd iamond (BDD), and screen-printed graphitic electrodes (SPEs). We consider the ORR in acidic conditions and critically evaluate the performanceo fu nmodified and 2D-hBN modified electrodes,i mplementing coverage studies (commonly neglected in the literature) in order to ascertain the true impact of this novel nanomaterial. Theb ehaviouro f2 D-hBN towards the ORR is shown to be highly dependent upon both the underlying carbon substrate and the coverage/mass utilised.2 D-hBN modified SPEs are foundt oexhibit the most beneficial response towards the ORR, reducingt he peak potential by ca. 0.28 Vw hen compared to an unmodified/bare SPE. Such improvements at this supporting substrate are inferred due to favourable 2D-hBNi nteraction with ridged surfaces exposing ah igh proportion of edge regions/sites, where conversely,w es how that relatively smooth substrate surfaces (such as GC) are less conducivet owards successful 2D-hBN immobilisation.I nt his paper, we reveal for the first time (in the specific caseo fu sing ar ough supporting substrate) that 2D-hBN gives riset o beneficial electrochemical behaviourt owards the ORR. Unfortunately,t his material is not considered an electrocatalyst for use within fuel cells given that the estimated number of electrons transferred during the ORRr anges between 1.90-2.45 for different coverages,i ndicatingt hat the ORR at 2D-hBN predomi...

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 83%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

2D Hexagonal Boron Nitride (2D‐hBN) Explored as a Potential Electrocatalyst for the Oxygen Reduction Reaction

et al. 2016

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“…The absence of peaks indicating Faradaic processes in CV, curve of a hybrid composite which contains pseudo-capacitance components like manganese oxide and PANI is attributed to effective interactions of redox active sites together and thus easy electron transfer in a wide range of potentials. [31] The specific capacitance of electrodes based on the CV tests (C cv ) was calculated by the following equation [32]…”

Section: Electrochemical Performance Of Pani Coated Mn 3 O 4 /Graphenmentioning

confidence: 99%

Facile Synthesis of Single‐ and Multi‐Layer Graphene/Mn₃O₄ Integrated 3D Urchin‐Shaped Hybrid Composite Electrodes by Core‐Shell Electrospinning

et al. 2019

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Three‐dimensional (3D) urchin‐shaped free‐standing composite electrodes were produced by the integration of single‐ and multi‐layer graphene and manganese oxide in a step‐wise procedure. The strong interactions between the components were confirmed by spectroscopic characterization techniques. The influence of single‐ and multi‐layer graphene on the electrochemical performance of composite electrodes was investigated in detail. Single‐layer graphene with more oxygen functional groups showed better interfacial interactions between each component due to the exfoliated structure. The electrode containing single‐layer graphene exhibited 28% higher specific capacitance of 452 F/g at a scan rate of 1 mV/s compared to that of multi‐layer graphene. After 1000 cycles of charging‐discharging, single platelet graphene‐based electrode with a high capacitance retention of 89% showed improved synergistic effects by the combination of conductive PANI, single platelets graphene, and manganese oxide. This study indicated the importance of intercalated and exfoliated state of graphene in electrochemical behavior of supercapacitor electrodes.

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Smart Electronic Textile‐Based Wearable Supercapacitors

et al. 2022

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Electronic textiles (e-textiles) have drawn significant attention from the scientific and engineering community as lightweight and comfortable next-generation wearable devices due to their ability to interface with the human body, and continuously monitor, collect, and communicate various physiological parameters. However, one of the major challenges for the commercialization and further growth of e-textiles is the lack of compatible power supply units. Thin and flexible supercapacitors (SCs), among various energy storage systems, are gaining consideration due to their salient features including excellent lifetime, lightweight, and high-power density. Textile-based SCs are thus an exciting energy storage solution to power smart gadgets integrated into clothing. Here, materials, fabrications, and characterization strategies for textile-based SCs are reviewed. The recent progress of textile-based SCs is then summarized in terms of their electrochemical performances, followed by the discussion on key parameters for their wearable electronics applications, including washability, flexibility, and scalability. Finally, the perspectives on their research and technological prospects to facilitate an essential step towards moving from laboratory-based flexible and wearable SCs to industrial-scale mass production are presented. IntroductionWearable electronic textiles (e-textiles) have been going through significant evolutions in recent years, due to the continuous progress of material science and nanotechnology, miniaturization, and wireless revolution. [1,2] E-textiles possess functionalities such as sensing, computation, display, and communication, [3][4][5][6]

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Boron nitride/reduced graphene oxide nanocomposites as supercapacitors electrodes

Cited by 41 publications

References 15 publications

2D Hexagonal Boron Nitride (2D‐hBN) Explored as a Potential Electrocatalyst for the Oxygen Reduction Reaction

2D Hexagonal Boron Nitride (2D‐hBN) Explored as a Potential Electrocatalyst for the Oxygen Reduction Reaction

Facile Synthesis of Single‐ and Multi‐Layer Graphene/Mn₃O₄ Integrated 3D Urchin‐Shaped Hybrid Composite Electrodes by Core‐Shell Electrospinning

Smart Electronic Textile‐Based Wearable Supercapacitors

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Boron nitride/reduced graphene oxide nanocomposites as supercapacitors electrodes

Cited by 41 publications

References 15 publications

2D Hexagonal Boron Nitride (2D‐hBN) Explored as a Potential Electrocatalyst for the Oxygen Reduction Reaction

2D Hexagonal Boron Nitride (2D‐hBN) Explored as a Potential Electrocatalyst for the Oxygen Reduction Reaction

Facile Synthesis of Single‐ and Multi‐Layer Graphene/Mn3O4 Integrated 3D Urchin‐Shaped Hybrid Composite Electrodes by Core‐Shell Electrospinning

Smart Electronic Textile‐Based Wearable Supercapacitors

Contact Info

Product

Resources

About

Facile Synthesis of Single‐ and Multi‐Layer Graphene/Mn₃O₄ Integrated 3D Urchin‐Shaped Hybrid Composite Electrodes by Core‐Shell Electrospinning