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Persistent Identifier
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perma:LIST.KBOZ2U |
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Publication Date
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2026-07-06 |
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Title
| Tailored silicon nanostructures in hydrogel-derived conductive binders: Role of size, structure, and surface chemistry in enhancing Li-ion battery performance [* Cross-Reference *] |
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Other Identifier
| https://doi.org/10.1016/j.jpowsour.2025.238620
SCOPUS_ID:105020695896 |
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Author
| Soukupová, Gabriela (University of Chemistry and Technology, Prague) - ORCID: 0000-0003-1356-6807
Matějka, Filip (University of Chemistry and Technology, Prague, Academy of Sciences of the Czech Republic)
Vlčková Živcová, Zuzana (University of Chemistry and Technology, Prague, J. Heyrovsky Institute of Physical Chemistry of the Academy of Sciences of the Czech Republic) - ORCID: 0000-0001-9441-0577
Laachachi, Abdelghani (University of Chemistry and Technology, Prague, Luxembourg Institute of Science and Technology)
Galář, Pavel (University of Chemistry and Technology, Prague, Academy of Sciences of the Czech Republic)
Lhotka, Miloslav (University of Chemistry and Technology, Prague, University of Chemistry and Technology, Prague) - ORCID: 0000-0001-9019-0976
Frank, Otakar (University of Chemistry and Technology, Prague, J. Heyrovsky Institute of Physical Chemistry of the Academy of Sciences of the Czech Republic) - ORCID: 0000-0002-9661-6250
Červenka, Jiří (University of Chemistry and Technology, Prague, Academy of Sciences of the Czech Republic)
Hassouna, Fatima (University of Chemistry and Technology, Prague) - ORCID: 0000-0001-7927-8416 |
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Point of Contact
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Use email button above to contact.
LIST RDS (LIST) |
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Description
| Silicon (Si) is a promising anode material for Li-ion batteries (LIBs), but its practical application is limited by volume expansion during lithiation/delithiation, leading to poor cycling stability. While Si nanostructuring mitigates this issue, it remains only a partial solution.This study systematically investigates the effects of Si particle size (6, 20, 55, or 100 nm), surface chemistry (type and degree of oxidation), and solid-state properties (amorphous vs. crystalline) on the electrochemical performance of Si-based anodes using a three-dimensional (3D) crosslinked polypyrrole (PPy) binder. In situ PPy polymerization around Si nanoparticles forms a 3D interconnected conductive network within the PPy/Si anodes, effectively accommodating volume changes and maintaining electrical contact during the galvanostatic cycling. The particle size dependence shows that larger Si nanoparticles provide higher initial charge capacity (2975 mAh/g), whereas smaller ones improve cycling stability (85 % capacity retention after 100 cycles). Amorphous Si exhibits significantly lower specific capacity but superior capacity retention (∼100 % after 100 cycles) compared to crystalline Si. Cyclic voltammetry and electrochemical impedance spectroscopy demonstrate that integrating 6 or 20 nm Si nanocrystals into a 3D crosslinked PPy enhances anode performance. These findings highlight the importance of optimizing Si properties in designing conductive hydrogel-derived anodes for high-performance LIBs. (2026-01-01)
***This entry has been automatically imported via Infodoc(ASO) CSV by LIST harvest scripts. Please refer to https://doi.org/10.1016/j.jpowsour.2025.238620 for the original and latest version of the dataset and data downloads*** (2026-06-09) |
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Subject
| Physics |
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Keyword
| 3D network
Electrically conductive polymer
Electrochemical properties
Li-ion battery
Si nanoparticles |
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Funding Information
| Grantová Agentura České Republiky: GAČR No. 21–09830S |
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Deposit Date
| 2026-01-01 |
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Data Type
| Article |
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Data Source
| Journal of Power Sources; ISSN: 03787753, vol. 661, 2025 |
