Significantly improved electrochemical characteristics of nickel sulfide nanoplates using graphene oxide thin film for supercapacitor applications

Iqbal, Muhammad; Yousef, Ahmed; Hassan, Arif; Hussain, Shahbbir; Ashiq, Muhammad Naeem; Mahmood-ul-Hassan, .; Razaq, Aamir

doi:10.1016/j.est.2020.102091

Cited by 32 publications

(12 citation statements)

References 55 publications

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“…Various transition metal sulfides, such as copper sulfide, nickel sulfide, zinc sulfide, molybdenum sulfide, manganese sulfide, strontium sulfide, and vanadium sulfide have attracted attention for supercapacitor applications, due to their natural abundance, easily controlled morphologies, multiple valences, and appropriate bandgap widths. Among these, MoS 2 is a potential electrode material for supercapacitor applications, due to its intriguing sheet-like structure, which offers a large surface area for double-layered charge storage and higher intrinsic fast ionic conductivity [ 4 , 16 , 17 , 18 ]. The analogous structure of molybdenum sulfide (MoS 2 ) with that of graphene means it has been considered for various energy storage, optoelectronics, sensing, and photocatalysis applications, owing to their unique morphology, excellent mechanical, and electrical properties [ 12 , 19 , 20 , 21 , 22 ].…”

Section: Introductionmentioning

confidence: 99%

Synthesis, Characterization, and Supercapacitor Performance of a Mixed-Phase Mn-Doped MoS2 Nanoflower

et al. 2022

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The fascinating features of 2D nanomaterials for various applications have prompted increasing research into single and few-layer metal dichalcogenides nanosheets using improved nanofabrication and characterization techniques. MoS2 has recently been intensively examined among layered metal dichalcogenides and other diverse transition metal-based materials, that have previously been studied in various applications. In this research, we report mixed-phase Mn-doped MoS2 nanoflowers for supercapacitor performance studies. The confirmation of the successfully prepared Mn-doped MoS2 nanoflowers was characterized by XRD, SEM-EDS, RAMAN, and BET research techniques. The mixed-phase of the as-synthesized electrode material was confirmed by the structural changes observed in the XRD and RAMAN studies. The surface area from the BET measurement was calculated to be 46.0628 m2/g, and the adsorption average pore size of the electrode material was 11.26607 nm. The electrochemical performance of the Mn-doped MoS2 electrode material showed a pseudo-capacitive behavior, with a specific capacitance of 70.37 Fg−1, and with a corresponding energy density of 3.14 Whkg−1 and a power density of 4346.35 Wkg−1. The performance of this metal-doped MoS2-based supercapacitor device can be attributed to its mixed phase, which requires further optimization in future works.

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Section: Introductionmentioning

confidence: 99%

Synthesis, Characterization, and Supercapacitor Performance of a Mixed-Phase Mn-Doped MoS2 Nanoflower

et al. 2022

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“…Among the transition metal sulfides, MoS 2 is a promising electrode material for supercapacitor applications, because of its fascinating sheet-like structure, which provides a huge surface area for double-layered charge storage and a greater intrinsic fast ionic conductivity. [15][16][17] MoS 2 is made up of covalently S-Mo-S atoms held together by weak van der Waals interactions and has a theoretically larger capacity than graphite. It comes in a variety of polytype formations, including 2H and 1 T phases, as well as oxidation states ranging from +2 to +6.…”

Section: Introductionmentioning

confidence: 99%

Non‐modulated synthesis of cobalt‐doped MoS ₂ for improved supercapacitor performance

Bello

Otun

Nyongombe

et al. 2022

Intl J of Energy Research

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A facile hydrothermal technique was employed to synthesized non-modulated cobalt-doped molybdenum sulfide (MoS 2 ) nanoflowers. The as-prepared materials were coated on commercially available Ni-foam to fabricate electrode materials for supercapacitor applications. The elucidation of the structural information, surface morphology, microstructural properties, as well as surface areas was successfully carried out by X-ray diffraction (XRD), Raman spectroscopy, scanning electron microscopy (SEM), transmission electron microscopy (TEM), and Brunauer-Emmett-Teller (BET) measurements, respectively. XRD and Raman analysis confirmed the structural changes of the materials, which depict a successful synthesis of cobalt-doped MoS 2 with typical phase change and the redshifted peaks of Raman spectra compared to pristine MoS 2 . The flower-like morphology and agglomerating nanosheets of various nanometer diameters of the microstructural properties of the obtained Co-MoS 2 were established from SEM and TEM images. The surface areas of the CMS 1 and CMS 3 electrode materials were, respectively, calculated to be 18.0607 and 14.5519 mg À2 from BET surface analysis. The electrode materials were electrochemically evaluated for their energy storage performance, the materials exhibit specific capacitances of 164 and 146 Fg À1 at 1 Ag À1 for the working electrodes (CMS 1 and CMS 3 ), respectively. Also, the energy densities of 3.67 and 2.05 Wh/kg with power densities of 3279.97 and 2960.26 W/kg were calculated for both electrode materials, respectively. The results illustrate that the Co-MoS 2 can be suitable for an effective electrode material for prospective supercapacitor applications. NOVELTY STATEMENT• Non-modulated Co-MoS 2 was synthesized via facile hydrothermal techniques.• It was established that any concentration of Cobalt higher than 3 moles might reduce the performance of the nanocomposite.

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“…[13][14][15][16] As graphene was oxidized to its oxide form, graphene oxide (GO) was commonly used in electronic, energy, biomedicine, etc. [17][18][19][20][21][22][23] After using the GO, the agglomeration would be remitted to a large degree. GO was an interlaminar graphite compound produced by interlaminar oxidation of graphite under the joint action of the strong acid and oxidant.…”

Section: Introductionmentioning

confidence: 99%

“…For example, graphene exhibited poor compatibility and dispersion when it was composited with the polymer to form agglomeration in the polymer matrix, which would damage the performance of the polymer 13–16 . As graphene was oxidized to its oxide form, graphene oxide (GO) was commonly used in electronic, energy, biomedicine, etc 17–23 . After using the GO, the agglomeration would be remitted to a large degree.…”

Section: Introductionmentioning

confidence: 99%

Properties study of composites for polybutene‐1 and modified graphene oxide

Kou

Duan

Chen

et al. 2022

J of Applied Polymer Sci

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Polybutene-1 (PB-1) was wildly used as pipe and film with its excellent mechanical performance, great creep resistance even at high temperature, good machinability, and fillable performance. This work focused on studying the properties of composites for polybutene-1 and modified graphene oxide (MGO). The graphene oxide (GO) was prepared using an improved Hummers method, and then it was modified with γ-methylacryloxy propyl trimethoxysilane (KH570). After that, the obtained MGO was composited with PB-1 by the solution blending method. The structure and properties of PB-1 composites were investigated by Fourier transform infrared (FTIR), scanning electron microscope (SEM), Xray diffraction (XRD), thermogravimetric analysis (TGA), differential scanning calorimeter (DSC), universal material testing machine. The results showed that the MGO and PB-1 presented good compatibility, and the addition of MGO could not change the crystal morphology of PB-1. When the content of MGO was 0.75 wt% of PB-1, the melt and crystallization temperatures were 127.5 and 70.5 C, and the strength of tensile and bending in the PB-1/MGO composites was 27.58 and 674 MPa. Thus, the PB-1/MGO composites have great potential for practical applications, such as in agricultural films and tubes.

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Significantly improved electrochemical characteristics of nickel sulfide nanoplates using graphene oxide thin film for supercapacitor applications

Cited by 32 publications

References 55 publications

Synthesis, Characterization, and Supercapacitor Performance of a Mixed-Phase Mn-Doped MoS2 Nanoflower

Synthesis, Characterization, and Supercapacitor Performance of a Mixed-Phase Mn-Doped MoS2 Nanoflower

Non‐modulated synthesis of cobalt‐doped MoS ₂ for improved supercapacitor performance

Properties study of composites for polybutene‐1 and modified graphene oxide

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Significantly improved electrochemical characteristics of nickel sulfide nanoplates using graphene oxide thin film for supercapacitor applications

Cited by 32 publications

References 55 publications

Synthesis, Characterization, and Supercapacitor Performance of a Mixed-Phase Mn-Doped MoS2 Nanoflower

Synthesis, Characterization, and Supercapacitor Performance of a Mixed-Phase Mn-Doped MoS2 Nanoflower

Non‐modulated synthesis of cobalt‐doped MoS 2 for improved supercapacitor performance

Properties study of composites for polybutene‐1 and modified graphene oxide

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Product

Resources

About

Non‐modulated synthesis of cobalt‐doped MoS ₂ for improved supercapacitor performance