研究目的
To explore the dual application of porous NiMoS4 microspheres in energy harvesting and storage, specifically in dye-sensitized solar cells (DSSCs) and supercapacitors (SCs), and to compare their performance with NiS2 nanosheets, MoS2 nanosheets, and Pt counter electrodes.
研究成果
Porous NiMoS4 microspheres synthesized via a facile hydrothermal technique demonstrated superior performance in both DSSCs and SCs. The NiMoS4 CE achieved a high PCE of 8.9% in DSSCs, outperforming Pt CEs. In SCs, the NiMoS4//AC ASC showed excellent specific capacitance, high energy density, and superior cycling stability, indicating its potential for energy storage applications.
研究不足
The study focuses on the synthesis and application of NiMoS4 microspheres in DSSCs and SCs. Limitations may include the scalability of the hydrothermal synthesis method and the long-term stability of the materials under operational conditions.
1：Experimental Design and Method Selection:
A facile one-step hydrothermal method was used to synthesize porous NiMoS4 microspheres. The methodology included the preparation of CEs by a spin-coating method, fabrication of DSSCs, and assembling of NiMoS4//AC asymmetric supercapacitor (ASC).
2：Sample Selection and Data Sources:
The samples included NiMoS4, NiS2, and MoS2, prepared under similar conditions for comparison. Data were obtained from electrochemical measurements and characterizations.
3：List of Experimental Equipment and Materials:
Instruments included X-ray diffractometer (XRD), field emission scanning electron microscope (FESEM), transmission electron microscopy (TEM), Brunauer-Emmett-Teller (BET) specific surface area analyzer, and electrochemical workstation. Materials included Ni(CH3COO)2·4H2O, Na2MoO4·2H2O, thiourea, and others as listed.
4：Experimental Procedures and Operational Workflow:
Detailed procedures for the synthesis of NiMoS4 microspheres, preparation of CEs, fabrication of DSSCs, and assembling of ASC were followed. Electrochemical measurements were conducted to evaluate performance.
5：Data Analysis Methods:
Data were analyzed using CV, EIS, Tafel polarization curves, and GCD tests. Specific capacitances, energy densities, and power densities were calculated using provided equations.
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