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A new method to prepare stable polyaniline dispersions for highly loaded cathodes of all-polymer Li-ion batteries
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SYSNO ASEP 0572328 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název A new method to prepare stable polyaniline dispersions for highly loaded cathodes of all-polymer Li-ion batteries Tvůrce(i) Tomšík, Elena (UMCH-V) RID, ORCID
Nosov, D. R. (LU)
Ivanko, Iryna (UMCH-V) RID, ORCID
Pokorný, Václav (UMCH-V) RID, ORCID
Konefal, Magdalena (UMCH-V) ORCID, RID
Černochová, Zulfiya (UMCH-V) RID, ORCID
Tadyszak, Krzysztof (UMCH-V)
Schmidt, D. F. (LU)
Shaplov, A. S. (LU)Číslo článku 2508 Zdroj.dok. Polymers. - : MDPI - ISSN 2073-4360
Roč. 15, č. 11 (2023)Poč.str. 20 s. Jazyk dok. eng - angličtina Země vyd. CH - Švýcarsko Klíč. slova polyaniline ; acid-assisted synthesis ; poly(ionic liquid) Vědní obor RIV CD - Makromolekulární chemie Obor OECD Polymer science CEP NU20-06-00424 GA MZd - Ministerstvo zdravotnictví Způsob publikování Open access Institucionální podpora UMCH-V - RVO:61389013 UT WOS 001006542400001 EID SCOPUS 85161619032 DOI https://doi.org/10.3390/polym15112508 Anotace A new method for the preparation of polyaniline (PANI) films that have a 2D structure and can record high active mass loading (up to 30 mg cm−2) via acid-assisted polymerization in the presence of concentrated formic acid was developed. This new approach represents a simple reaction pathway that proceeds quickly at room temperature in quantitative isolated yield with the absence of any byproducts and leads to the formation of a stable suspension that can be stored for a prolonged time without sedimentation. The observed stability was explained by two factors: (a) the small size of the obtained rod-like particles (50 nm) and (b) the change of the surface of colloidal PANI particles to a positively charged form by protonation with concentrated formic acid. The films cast from the concentrated suspension were composed of amorphous PANI chains assembled into 2D structures with nanofibrillar morphology. Such PANI films demonstrated fast and efficient diffusion of the ions in liquid electrolyte and showed a pair of revisable oxidation and reduction peaks in cyclic voltammetry. Furthermore, owing to the high mass loading, specific morphology, and porosity, the synthesized polyaniline film was impregnated by a single-ion conducting polyelectrolyte-poly(LiMn-r-PEGMm) and characterized as a novel lightweight all-polymeric cathode material for solid-state Li batteries by cyclic voltammetry and electrochemical impedance spectroscopy techniques.
Pracoviště Ústav makromolekulární chemie Kontakt Eva Čechová, cechova@imc.cas.cz ; Tel.: 296 809 358 Rok sběru 2024 Elektronická adresa https://www.mdpi.com/2073-4360/15/11/2508
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