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Novel silicon nanoparticles-based carbonized polypyrrole nanotube composites as anode materials for Li-ion batteries
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SYSNO ASEP 0580124 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Novel silicon nanoparticles-based carbonized polypyrrole nanotube composites as anode materials for Li-ion batteries Tvůrce(i) Soukupová, G. (CZ)
Jindra, Martin (UFCH-W) ORCID
Lapka, T. (CZ)
Vlčková Živcová, Zuzana (UFCH-W) RID, ORCID
Dendisová, M. (CZ)
Prokeš, J. (CZ)
Frank, Otakar (UFCH-W) RID, ORCID
Hassouna, F. (CZ)Číslo článku 233976 Zdroj.dok. Journal of Power Sources. - : Elsevier - ISSN 0378-7753
Roč. 593, FEB 2024 (2024)Poč.str. 11 s. Jazyk dok. eng - angličtina Země vyd. NL - Nizozemsko Klíč. slova Carbonized polypyrrole nanotubes ; Electrical conductivity ; Electrochemical performance ; Li-ion battery ; N-containing carbon filler ; Si nanoparticles Vědní obor RIV CG - Elektrochemie Obor OECD Electrochemistry (dry cells, batteries, fuel cells, corrosion metals, electrolysis) CEP GA21-09830S GA ČR - Grantová agentura ČR EF16_026/0008382 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy Způsob publikování Omezený přístup Institucionální podpora UFCH-W - RVO:61388955 UT WOS 001147881800001 EID SCOPUS 85180537994 DOI 10.1016/j.jpowsour.2023.233976 Anotace The development of elastic nanostructured Si-based anodes holds promise for advancing lithium-ion batteries due to the high theoretical specific capacity exhibited by Si. Combining nanostructured Si with C proves to be a successful strategy in addressing the challenges tied to the substantial volume expansion of Si during lithiation. In this work, a novel Si-based anode is fashioned through a simple and universal strategy, integrating Si nanoparticles with 1D nano-carbonaceous fillers (CPPy-NT) featuring nanotubular morphology and N atoms, and a water-based binder (poly(acrylic acid)). CPPy-NT are derived by carbonizing pre-synthesized polypyrrole nanotubes (PPy-NT). A clear correlation is established among the carbonization temperature for CPPy-NT preparation, N content in CPPy-NT, electrical conductivity, and the electrochemical performance of the ensuing Si/CPPy-NT anode. For comparative analysis, the electrochemical properties of the Si-based anode employing Super P (commercial carbon black) or PPy-NT are contrasted with those of Si/CPPy-NT. Notably, the Si/CPPy-NT anode with CPPy-NT bearing the highest amount of graphitic N sites exhibits a substantial improvement in initial charge capacity (approximately 2200 mAh g−1) and enhanced cycling stability. These findings underscore the potential to elevate the electrochemical activity of the C filler by carefully optimizing morphology, conductivity, and the incorporation of an appropriate amount of graphitic N. Pracoviště Ústav fyzikální chemie J.Heyrovského Kontakt Michaela Knapová, michaela.knapova@jh-inst.cas.cz, Tel.: 266 053 196 Rok sběru 2025 Elektronická adresa https://hdl.handle.net/11104/0348890
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