Diffusion controlled electrochemical analysis of MoS2 and MOF derived metal oxide–carbon hybrids for high performance supercapacitors

In the context of emerging electric devices, the demand for advanced energy storage materials has intensified. These materials must encompass both surface and diffusion-driven charge storage mechanisms. While diffusion-driven reactions offer high capacitance by utilizing the bulk of the material, th...

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Bibliographic Details
Published in:Scientific reports 2023-11, Vol.13 (1), p.20675-20675, Article 20675
Main Authors: Shrivastav, Vishal, Mansi, Dubey, Prashant, Shrivastav, Vaishali, Kaur, Ashwinder, Hołdyński, Marcin, Krawczyńska, Agnieszka, Tiwari, Umesh K., Deep, Akash, Nogala, Wojciech, Sundriyal, Shashank
Format: Article
Language:English
Subjects:
639/301/299
639/301/357
639/638/161
639/638/675
639/638/911
Capacitance
Carbon
Composite materials
Diffusion
Electrochemistry
Energy storage
Humanities and Social Sciences
Hybrids
Molybdenum disulfide
multidisciplinary
Science
Science (multidisciplinary)
Titanium dioxide
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Summary:In the context of emerging electric devices, the demand for advanced energy storage materials has intensified. These materials must encompass both surface and diffusion-driven charge storage mechanisms. While diffusion-driven reactions offer high capacitance by utilizing the bulk of the material, their effectiveness diminishes at higher discharge rates. Conversely, surface-controlled reactions provide rapid charge/discharge rates and high power density. To strike a balance between these attributes, we devised a tri-composite material, TiO 2 /Carbon/MoS 2 (T10/MoS 2 ). This innovative design features a highly porous carbon core for efficient diffusion and redox-active MoS 2 nanosheets on the surface. Leveraging these characteristics, the T10/MoS 2 composite exhibited impressive specific capacitance (436 F/g at 5 mV/s), with a significant contribution from the diffusion-controlled process (82%). Furthermore, our symmetrical device achieved a notable energy density of ~ 50 Wh/kg at a power density of 1.3 kW/kg. This concept holds promise for extending the approach to other Metal–Organic Framework (MOF) structures, enabling enhanced diffusion-controlled processes in energy storage applications.
ISSN:2045-2322
2045-2322
DOI:10.1038/s41598-023-47730-4