Facile synthesis of NiS/graphene composite with high catalytic activity for high-efficiency dye-sensitized solar cells

Chen, Xiaobo; Zhao, Fei; Liu, Weiwei; Sun, Dongsheng; Zuo, Yuegang; Miao, Zhongzheng; Yang, Peizhi

doi:10.1007/s10008-017-3613-4

Cited by 7 publications

(3 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The lower impedance values measured at the high-frequency region of the Nyquist plot for the devices N/M-1 and N/M-3 indicate the faster transport of electrolytic ions across the homogeneous TiO 2 /NiS/MnS electrode, which provides a good working surface for the iodolite HI-30 electrolyte and facilitates their interaction. [ 47 , 48 ]. The model adopted for the extraction of impedance and the capacitive value are obtained using Equations (5) and (6), which are similar to those in the literature [ 49 , 50 , 51 ].…”

Section: Resultsmentioning

confidence: 99%

Improving the Conversion Ratio of QDSCs via the Passivation Effects of NiS

Meyer,

Agoro

2024

Nanomaterials

View full text Add to dashboard Cite

To revolutionize the photochemical efficiency of quantum dots sensitized solar cells (QDSSCs) devices, herein, a passivation of the cells with multilayer material has been developed for heterojunctions TiO2/NiS/MnS/HI-30/Pt devices. In this study, NiS and MnS were deposited on a photoanode for the first time as passivated photon absorbers at room temperature. The adoption of NiS as a passisvative layer could tailor the active surface area and improve the photochemical properties of the newly modified cells. The vibrational shifts obtained from the Raman spectra imply that the energy change is influenced by the surface effect, giving rise to better electronic conductivity. The electrochemical stability and durability test for the N/M-3 device slows down and remains at 8.88% of its initial current after 3500 s, as compared to the N/M-1 device at 7.20%. The disparity in charge recombination implies that both the outer and inner parts of the nanoporous material are involved in the photogeneration reaction. The hybridized N/M-3 cell device reveals the highest current density with a low potential onset, indicating that power conversion occurs more easily because photons tend to be adsorbed easily on the surface of the MnS. The Nyquist plot for N/M-1 and N/M-3 promotes the faster transport of electrolytic ions across the TiO2/NiS/MnS, providing a good interaction for the electrolyte. The I-J Value of 9.94% shows that the passivation with the NiS layer promotes electron transport and enhances the performance of the modified cells. The passivation of the TiO2 layer with NiS attains a better power conversion efficiency among the scant studies so far on the surface passivation of QDSCs.

show abstract

Section: Resultsmentioning

confidence: 99%

Improving the Conversion Ratio of QDSCs via the Passivation Effects of NiS

Meyer,

Agoro

2024

Nanomaterials

View full text Add to dashboard Cite

show abstract

“…10). 35 Ruthenium dye is a most used sensitizer in DSSC to increase the efficiency such that it has the capacity to absorb light in visible region. It also has a unique property of rapid electron process after iodine electrolyte injected which is stable on the photo anode surface.…”

Section: Elemental Analysis (Edx)mentioning

confidence: 99%

Nanocomposites of Co-NiS/GO as a Versatile Catalyst: Enabling Platinum-Free DSSC Counter Electrodes and Enhancing Organic Dye Degradation

G.,

Geetha,

Ramesh

2024

ECS J. Solid State Sci. Technol.

View full text Add to dashboard Cite

This study presents the synthesis of a nanocomposite intended to serve as a counter electrode in dye-sensitized solar cells (DSSCs), replacing platinum electrodes, as well as functioning as a nanocatalyst for organic dye degradation. Graphene oxide was synthesized using a modified Hummers method, and cobalt-doped nickel sulfide on graphene oxide (Co-NiS/GO) was prepared via hydrothermal synthesis. The samples underwent characterization through various testing methods. X-ray diffraction analysis revealed a hexagonal structure with a crystallite size of 30 nm. Field-emission scanning electron microscopy/energy-dispersive X-ray images showed a cornflake-like structure, with elements such as cobalt, nickel, sulfur, carbon, and oxygen present. Chemical valence states were confirmed through X-ray photoelectron specteroscopy analysis. The power conversion efficiency of the Co-NiS/GO counter electrode in DSSCs was investigated, with parameters such as open-circuit voltage, short-circuit current density, fill factor, and power conversion efficiency calculated to be 8.6032 mV, 0.5484 mA cm−2, 61, and 2.83%, respectively, based on I-V studies. Furthermore, the developed Co-NiS/GO nanocomposite was assessed for its photo catalytic dye degradation capabilities using malachite green (MG), achieving a degradation rate of approximately 96% within 180 min.

show abstract

“…[21] Different GObased nano composites have been developed with excellent photo-electro-chemical performance. [3,[22][23][24][25] Among all the composites identified, GO-nano NiS composites have been reported as electrode materials in lithium ion batteries, [26][27][28] supercapacitors, [29][30][31] dye-sensitized solar cells, [32][33][34] chemical sensors, [35,36] and so on. They all expressed superior photoelectro-chemical performances and potential application prospects, by virtue of the excellent synergistic-enhancement effect among GO substrate and various functional nano particles.…”

Section: Introductionmentioning

confidence: 99%

NiS Nanospheres Anchored onto a Graphene Oxide Substrate (NiS@GO) for Efficient Electrochemical Sensing of Trace Amounts of Silver Ions

et al. 2022

View full text Add to dashboard Cite

Electrochemical analysis is a promising method among all the common analytical technologies reported, due to its considerable sensitivity, inherent portability and low-cost requirements. To accurately monitor the contamination of heavy metal Ag + , NiS nanospheres anchored onto graphene oxide substrate (NiS@GO) were successfully constructed as a electrochemical sensor, by one-pot precipitation-co-self-assembly method. Under the optimized conditions, the obtained NiS@GO ex-hibited a synergistic electrochemical performance for exclusive cyclic-voltammetry sensing of ultra-trace Ag + with a nice linear range of 6.67-160 × 10 À 9 mol/L and a low detection limit of 1.76 × 10 À 10 mol/L. When applied for electrochemical detection of Ag + in real environmental water and fruit juice samples, the recoveries were between 95.8 and 102.4 % with relative standard deviations less than 3.4 %. The recognition mechanism for NiS@GO to Ag + was illustrated in detail.

show abstract

Facile synthesis of NiS/graphene composite with high catalytic activity for high-efficiency dye-sensitized solar cells

Cited by 7 publications

References 23 publications

Improving the Conversion Ratio of QDSCs via the Passivation Effects of NiS

Improving the Conversion Ratio of QDSCs via the Passivation Effects of NiS

Nanocomposites of Co-NiS/GO as a Versatile Catalyst: Enabling Platinum-Free DSSC Counter Electrodes and Enhancing Organic Dye Degradation

NiS Nanospheres Anchored onto a Graphene Oxide Substrate (NiS@GO) for Efficient Electrochemical Sensing of Trace Amounts of Silver Ions

Contact Info

Product

Resources

About