Facile fabrication of novel heterostructured tin disulfide (SnS2)/tin sulfide (SnS)/N-CNO composite with improved energy storage capacity for high-performance supercapacitors

Pallavolu, Mohan Reddy; Kumar, Yedluri Anil; Mani, Ganesh Kumar; Alshgari, Razan A.; Ouladsmane, Mohamed; Joo, Sang Woo

doi:10.1016/j.jelechem.2021.115695

Cited by 61 publications

(15 citation statements)

References 73 publications

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“…The comparison GCD curves of all the manufactured electrodes at a current density of 0.5 A g –1 are shown in Figure b. The MNWC electrode’s long discharge time compared to the other electrodes, which indicates a larger specific capacitance, is consistent with the CV results . The GCD curves of the MNWC composite electrode at current densities from 0.5 to 5 A g –1 are shown in Figure d.…”

Section: Resultssupporting

confidence: 75%

Facile Synthesis and Characterization of Novel Carbon Nanofiber-Doped MWO₄ (M–Mn, Co, Ni, Mn–Co, Mn–Ni, Ni–Co)-Based Nanostructured Electrode Materials for Application in Electrochemical Supercapacitors and Photoelectrochemical Water Splitting

et al. 2022

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More efficient, clean, and renewable energy sources must be developed to replace fossil fuels and protect the environment from their harmful effects. Electrochemical energy storage devices and energy conversion (hydrogen production) sources are two effective approaches for replacing fossil fuels. Herein, single metal tungstates, such as MnWO 4 flakes, NiWO 4 nanoparticles, and CoWO 4 nanoparticles, as well as bimetallic tungstates, such as MnNiWO 4 , MnCoWO 4 , and NiCoWO 4 , were synthesized using a simple hydrothermal method. Furthermore, carbon nanofibers (CNFs) were adopted to modify bimetallic tungstate to improve the electron transfer and extraction of electron−hole pairs. To modify the CNFs with bimetallic tungstate as a composite electrode, a simple and convenient process called the wet impregnation method was employed. The resulting composite materials exhibited better performances in supercapacitor and photoelectrochemical water-splitting studies than those of single and bimetallic tungstates. The hybrid composite, MnNiWO 4 /CNF, showed a high specific capacity of 1374 F g −1 at a current density of 0.5 A g −1 in a three-electrode configuration, owing to its nonfaradaic and faradaic processes. This performance was 4.2, 10.3, and 3 orders of magnitude higher than those of MnWO 4 , NiWO 4 , and MnNiWO 4 electrodes, respectively. In photoelectrochemical water-splitting studies, the development of heterostructures decreases electron−hole recombination and improves interfacial charge transfer in composite materials. In this study, the MnNiWO 4 /CNF nanocomposite material exhibited a maximum applied bias photon-to-current efficiency (ABPE) of 3.47%, approximately 6, 6, and 2 orders of magnitude higher than those of bare MnWO 4 , NiWO 4 , and MnNiWO 4 , respectively, under illumination. The crystallinities, morphologies, absorptions, and chemical compositions of the synthesized materials were investigated using electrochemical and spectroscopic techniques. The results indicate that the synthesized hybrid materials could be promising candidates as electrode materials for remarkable supercapacitor and photoelectrochemical water-splitting applications.

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Section: Resultssupporting

confidence: 75%

Facile Synthesis and Characterization of Novel Carbon Nanofiber-Doped MWO₄ (M–Mn, Co, Ni, Mn–Co, Mn–Ni, Ni–Co)-Based Nanostructured Electrode Materials for Application in Electrochemical Supercapacitors and Photoelectrochemical Water Splitting

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“…RhB dye will be oxidized by this hydroxyl radical, which may eventually breakdown into products. The role of OH as an active oxidizing species in the degradation of RhB dye was confirmed, and the rate of degradation was significantly slowed in the presence of an OH scavenger [22,23]. The scheme of organic dye degradation at the TiO2 surface under UV-light irradiation is shown in Scheme 1.…”

Section: Photocatalytic Efficiency (Mechanism)mentioning

confidence: 90%

Spray pyrolisis deposition and characterization of Cd-TiO2 thin film for photocatalytic and photovoltaic applications

Rasekaran

Kumaresan

Nithiyanantham³

et al. 2022

J. Electrochem. Sci. Eng.

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In the present paper, an innovative approach to enhance the photocatalytic efficiency and energy of photovoltaics by modifying the surface morphology of TiO2 is demonstrated. The photovoltaic device provides sustainable power efficiency in TiO2 (TO) and Cd-TiO2 (CTO) thin films grown through spray pyrolysis. The structural and optical properties of the prepared undoped and Cd doped TiO2 thin films were studied. The morphology and content of the produced samples were studied using scanning electron microscopy (SEM with EDAX). A UV-Vis spectrophotometer was used to record the optical absorption spectra of TiO2 nanoparticles. XRD analysis showed that TO and CTO had anatase structures, and the average crystalline size was calculated as 132.0 nm. The photocatalytic efficiency of TO and CTO for degradation of Rodhamine B (RhB) dye was examined. Also, power-voltage (P-V) and photocurrent-voltage (I-V) output current intensity relations were discussed.

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“…Fluoroperovskites frequently have a large band gap of energy [ 8 , 9 , 10 , 11 ]. The large energy band gap in these compounds marks them technologically significant.…”

Section: Introductionmentioning

confidence: 99%

“…The large energy band gap in these compounds marks them technologically significant. When Fluoroperovskites doped with lanthanide Er and Ce ions, such as is the case with BaLiF 3 and KMgF 3 show promise as a scintillation and radiation dosimeter [ 9 ]. BaLiF 3 and KMgF 3 are employed in optical lithography enhancers as UV vacuum materials for optics [ 7 , 11 , 12 , 13 , 14 , 15 , 16 , 17 , 18 , 19 , 20 , 21 , 22 , 23 , 24 ].…”

Section: Introductionmentioning

confidence: 99%

Theoretical Investigations into the Different Properties of Al-Based Fluoroperovskite AlMF3 (M = Cr, B) Compounds by the TB-MBJ Potential Method

et al. 2022

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Al-based fluoroperovskites compounds AlMF3 (M = Cr, B) are investigated computationally and calculated their elastic, structural, optical, and electrical properties in this study utilising TB-MBJ potential (also GGA+U for AlCrF3) approximations, according to the Birch Murnaghan Equation curve and tolerance factor, these material are structurally cubic and stable. The IRelast algorithm is used to forecast elastic properties, and the outputs show that these compound are mechanically stable, anisotropic and ductile. AlBF3 has a metallic nature and overlapping states, while AlCrF3 have a narrow indirect band gap at (X-M) points of symmetry, with band gaps of 0.71 eV for AlCrF3 and zero eV for AlBF3. The partial and total density of states are being used to determine the influences of different basic states to the conduction and valence bands (TDOS & PDOS). Investigation of Optical properties shows that these compounds have low refractive index and high absorption coefficient, conductivity, reflective coefficient at high energy ranges. Owing to the indirect band gap, the applications of these compounds are deemed in conducting industries. Here we are using these compounds for first time and are examined using the computational method, which delivers a complete view into the different properties.

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Facile fabrication of novel heterostructured tin disulfide (SnS2)/tin sulfide (SnS)/N-CNO composite with improved energy storage capacity for high-performance supercapacitors

Cited by 61 publications

References 73 publications

Facile Synthesis and Characterization of Novel Carbon Nanofiber-Doped MWO₄ (M–Mn, Co, Ni, Mn–Co, Mn–Ni, Ni–Co)-Based Nanostructured Electrode Materials for Application in Electrochemical Supercapacitors and Photoelectrochemical Water Splitting

Facile Synthesis and Characterization of Novel Carbon Nanofiber-Doped MWO₄ (M–Mn, Co, Ni, Mn–Co, Mn–Ni, Ni–Co)-Based Nanostructured Electrode Materials for Application in Electrochemical Supercapacitors and Photoelectrochemical Water Splitting

Spray pyrolisis deposition and characterization of Cd-TiO2 thin film for photocatalytic and photovoltaic applications

Theoretical Investigations into the Different Properties of Al-Based Fluoroperovskite AlMF3 (M = Cr, B) Compounds by the TB-MBJ Potential Method

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Facile fabrication of novel heterostructured tin disulfide (SnS2)/tin sulfide (SnS)/N-CNO composite with improved energy storage capacity for high-performance supercapacitors

Cited by 61 publications

References 73 publications

Facile Synthesis and Characterization of Novel Carbon Nanofiber-Doped MWO4 (M–Mn, Co, Ni, Mn–Co, Mn–Ni, Ni–Co)-Based Nanostructured Electrode Materials for Application in Electrochemical Supercapacitors and Photoelectrochemical Water Splitting

Facile Synthesis and Characterization of Novel Carbon Nanofiber-Doped MWO4 (M–Mn, Co, Ni, Mn–Co, Mn–Ni, Ni–Co)-Based Nanostructured Electrode Materials for Application in Electrochemical Supercapacitors and Photoelectrochemical Water Splitting

Spray pyrolisis deposition and characterization of Cd-TiO2 thin film for photocatalytic and photovoltaic applications

Theoretical Investigations into the Different Properties of Al-Based Fluoroperovskite AlMF3 (M = Cr, B) Compounds by the TB-MBJ Potential Method

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Facile Synthesis and Characterization of Novel Carbon Nanofiber-Doped MWO₄ (M–Mn, Co, Ni, Mn–Co, Mn–Ni, Ni–Co)-Based Nanostructured Electrode Materials for Application in Electrochemical Supercapacitors and Photoelectrochemical Water Splitting

Facile Synthesis and Characterization of Novel Carbon Nanofiber-Doped MWO₄ (M–Mn, Co, Ni, Mn–Co, Mn–Ni, Ni–Co)-Based Nanostructured Electrode Materials for Application in Electrochemical Supercapacitors and Photoelectrochemical Water Splitting