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Electrochemical Double-Layer Capacitance of MoS[sub 2] Nanowall Films
Abstract
Edge-oriented MoS 2 films synthesized by single source precursor chemical vapor deposition exhibit a high density of nanowalls, which can potentially exhibit excellent electrochemical charge storage properties. The electrochemical double-layer capacitance of layered, nanowalled MoS 2 film has been investigated in this work using electrochemical impedance spectroscopy. We show that edge-oriented MoS 2 thin films can behave as a supercapacitor at alternating current frequencies up to 100 Hz . The supercapacitor performance is comparable to that of carbon nanotube array electrodes. In addition to double-layer capacitance, diffusion of the ions into the films at slow scan rates gives rise to faradaic capacitance, which enhances the capacitance significantly. The real and imaginary part of the capacitance of the MoS 2 films was analyzed as a function of frequency, in order to obtain information on the relaxation time constant and frequency dependence of the supercapacitor properties.
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The lower conductivity of MoS2 sheet presents a barrier for its exploitation as a supercapacitor electrode.
“The lower conductivity of MoS2 sheet presents a huge barrier for the exploitation of its supercapaciator electrode application.”
From Engineering of MoS<sub>2</sub> Quantum Dots/PANI Aerogel for High Performance Supercapaciator (2019) · cites this paper as [17]
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Research works printed but not linked: 15
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Cited by
Sorted by citations
Synthesis, stabilization and applications of 2-dimensional 1T metallic MoS <sub>2</sub>
Shi, S., Sun, Z., & Hu, Y. H. (2018) · Journal of Materials Chemistry A · doi:10.1039/c8ta08152b · Cited by 374
Gigot, A., Fontana, M., Serrapede, M., Castellino, M., Bianco, S., Armandi, M., Bonelli, B., Pirri, C. F., Tresso, E., & Rivolo, P. (2016) · ACS Applied Materials & Interfaces · doi:10.1021/acsami.6b11290 · Cited by 164
Ersan, F., Gökoğlu, G., & Aktürk, E. (2015) · The Journal of Physical Chemistry C · doi:10.1021/acs.jpcc.5b09034 · Cited by 90
Engineering of MoS<sub>2</sub> Quantum Dots/PANI Aerogel for High Performance Supercapaciator
Das, S., & Nandi, A. K. (2019) · Macromolecular Symposia · doi:10.1002/masy.201800242 · Cited by 10
Metadata
- Authors
- Soon, J. M., & Loh, K. P.
- Affiliations
- National University of Singapore (SG)
- ORCID
- Loh, Kian Ping
- Venue
- Electrochemical and Solid-State Letters
- Publisher
- The Electrochemical Society
- Published
- 2007
- Volume
- 10
- Issue
- 11
- Pages
- A250
- ISSN
- 1099-0062 (ISSN-L)
- OpenAlex
- W1963860831
- Cited by
- 477
- References
- 0
- Citations by year
- 2026: 17 · 2025: 19 · 2024: 31 · 2023: 24 · 2022: 35 · 2021: 36 · 2020: 48 · 2019: 43 · 2018: 36 · 2017: 38 · 2016: 45 · 2015: 47 · 2014: 26 · 2013: 14 · 2012: 7
- FWCI
- 1.10
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Electrochemical and Solid-State Letters (publishedVersion)
- National University of Singapore (submittedVersion)
- Funders
- National University of Singapore
- Topics
- Physical Sciences › Materials Science › Electronic, Optical and Magnetic Materials › Supercapacitor Materials and Fabrication
- Physical Sciences › Materials Science › Materials Chemistry › MXene and MAX Phase Materials
- Physical Sciences › Energy › Renewable Energy, Sustainability and the Environment › Electrocatalysts for Energy Conversion
- Keywords
- double-layer capacitance, supercapacitors, pseudocapacitance, ion diffusion, relaxation time constant, frequency-dependent capacitance
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