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Toluene‐Mediated Morphology Tuning of Diblock Copolymer‐Templated Porous Si/Ge/K/C Thin Films for Li‐Ion Batteries
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- Weindl, Christian L. (author)
- Department of Physics TUM School of Natural Sciences Chair for Functional Materials Technical University of Munich James-Franck-Str. 1 85748 Garching Germany
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- Wu, Kexin (author)
- Department of Physics TUM School of Natural Sciences Chair for Functional Materials Technical University of Munich James-Franck-Str. 1 85748 Garching Germany
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- Fajman, Christian E. (author)
- Department of Chemistry TUM School of Natural Sciences Chair of Inorganic Chemistry with Focus on Novel Materials Technical University of Munich Lichtenbergstr. 4 85748 Garching Germany
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- Department of Physics TUM School of Natural Sciences Chair for Functional Materials Technical University of Munich James-Franck-Str 1 85748 Garching Germany Department of Chemistry TUM School of Natural Sciences Chair of Inorganic Chemistry with Focus on Novel Materials Technical University of Munich Lichtenbergstr. 4 85748 Garching Germany (creator_code:org_t)
- Wiley, 2023
- 2023
- English.
- In: Advanced Energy and Sustainability Research. - : Wiley. - 2699-9412 .- 2699-9412. ; 4:10
- Journal article (peer-reviewed)
Abstract
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- Amphiphilic diblock copolymer poly(styrene-b-ethylene oxide) templating in combination with sol–gel chemistry is utilized to synthesize porous mixed silicon/germanium/potassium/carbon (Si/Ge/K/C) thin films. As a Si/Ge source, the dissolvable Zintl phase K12Si12Ge5 is used. The toluene-mediated morphological changes in the porous mixed Si/Ge/K/C thin films are studied with scanning electron microscopy and grazing incidence small/wide-angle X-Ray scattering. A dichloromethane solvent vapor annealing step is applied to study the additional morphological transformation inside the films. Since Ge and Si are promising anode materials in Li-ion batteries, CR2032 half-cells are manufactured with the porous mixed Si/Ge/K/C thin films and characterized by cyclic voltammograms, cycling, and impedance spectroscopy.
Subject headings
- NATURVETENSKAP -- Kemi -- Oorganisk kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Inorganic Chemistry (hsv//eng)
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