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Theoretical Analysi...
Theoretical Analysis, Synthesis, and Characterization of 2D W1.33C (MXene) with Ordered Vacancies
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- Meshkian, Rahele (författare)
- Linköpings universitet,Tunnfilmsfysik,Tekniska fakulteten
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- Lind, Hans (författare)
- Linköpings universitet,Tunnfilmsfysik,Tekniska fakulteten
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- Halim, Joseph (författare)
- Linköpings universitet,Tunnfilmsfysik,Tekniska fakulteten
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- El Ghazaly, Ahmed (författare)
- Linköpings universitet,Tunnfilmsfysik,Tekniska fakulteten
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- Thörnberg, Jimmy (författare)
- Linköpings universitet,Tunnfilmsfysik,Tekniska fakulteten
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- Tao, Quanzheng (författare)
- Linköpings universitet,Tunnfilmsfysik,Tekniska fakulteten
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- Dahlqvist, Martin (författare)
- Linköpings universitet,Tunnfilmsfysik,Tekniska fakulteten
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- Palisaitis, Justinas (författare)
- Linköpings universitet,Tunnfilmsfysik,Tekniska fakulteten
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- Persson, Per O A (författare)
- Linköpings universitet,Tunnfilmsfysik,Tekniska fakulteten
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- Rosén, Johanna (författare)
- Linköpings universitet,Tunnfilmsfysik,Tekniska fakulteten
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(creator_code:org_t)
- 2019-09-23
- 2019
- Engelska.
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Ingår i: ACS APPLIED NANO MATERIALS. - : AMER CHEMICAL SOC. - 2574-0970. ; 2:10, s. 6209-6219
- Relaterad länk:
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https://liu.diva-por... (primary) (Raw object)
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http://liu.diva-port...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Synthesis of delaminated 2D W1.33C (MXene) has been performed by selectively etching Al as well as Sc/Y from the recently discovered nanolaminated i-MAX phases (W2/3Sc1/3)(2)AlC and (W2/3Y1/3)(2)AlC. Both quaternary phases produce MXenes with similar flake morphology and with a skeletal structure due to formation of ordered vacancies. The measured O, OH, and F terminations, however, differ in amount as well as in relative ratios, depending on parent material, evident from X-ray photoelectron spectroscopy. These findings are correlated to theoretical simulations based on first-principles, investigating the W1.33C, and the effect of termination configurations on structure, formation energy, stability, and electronic structure. The theoretical results indicate a favored F-rich surface composition, though with a system going from insulating/semiconducting to metallic for different termination configurations, suggesting a high tuning potential of these materials. Additionally, free-standing W1.33C films of 2-4 mu m thickness and with up to 10 wt % polymer (PEDOT:PSS) were tested as electrodes in supercapacitors, showing capacitances up to 600 F cm(-3) in 1 M H2SO4 and high capacitance retention for at least 10000 cycles at 10 A g(-1). This is highly promising results compared to other W-based materials to date.
Ämnesord
- NATURVETENSKAP -- Kemi -- Materialkemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Materials Chemistry (hsv//eng)
Nyckelord
- MXene; i-MAX; XPS; DFT; electrochemistry
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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Till lärosätets databas
- Av författaren/redakt...
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Meshkian, Rahele
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Lind, Hans
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Halim, Joseph
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El Ghazaly, Ahme ...
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Thörnberg, Jimmy
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Tao, Quanzheng
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visa fler...
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Dahlqvist, Marti ...
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Palisaitis, Just ...
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Persson, Per O A
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Rosén, Johanna
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visa färre...
- Om ämnet
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- NATURVETENSKAP
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NATURVETENSKAP
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och Kemi
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och Materialkemi
- Artiklar i publikationen
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ACS APPLIED NANO ...
- Av lärosätet
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Linköpings universitet