Počet záznamů: 1
Effect of PAMAM dendrimers on interactions and transport of LiTFSI and NaTFSI in propylene carbonate-based electrolytes
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SYSNO ASEP 0531049 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Effect of PAMAM dendrimers on interactions and transport of LiTFSI and NaTFSI in propylene carbonate-based electrolytes Tvůrce(i) Konefal, Rafal (UMCH-V) RID, ORCID
Morávková, Zuzana (UMCH-V) RID, ORCID
Paruzel, Bartosz (UMCH-V) RID, ORCID
Patsula, Vitalii (UMCH-V) RID, ORCID
Abbrent, Sabina (UMCH-V) RID, ORCID
Szutkowski, K. (PL)
Jurga, S. (PL)Číslo článku 1595 Zdroj.dok. Polymers. - : MDPI
Roč. 12, č. 7 (2020), s. 1-16Poč.str. 16 s. Jazyk dok. eng - angličtina Země vyd. CH - Švýcarsko Klíč. slova PAMAM ; dendrimers ; LiTFSI Vědní obor RIV CD - Makromolekulární chemie Obor OECD Polymer science CEP GA18-12925S GA ČR - Grantová agentura ČR Způsob publikování Open access Institucionální podpora UMCH-V - RVO:61389013 UT WOS 000558694100001 EID SCOPUS 85088628670 DOI 10.3390/polym12071595 Anotace Poly(amidoamine) (PAMAM)-based electrolytes are prepared by dissolving the PAMAM half-generations G1.5 or G2.5 in propylene carbonate (PC), either with lithium bis(trifluoromethylsulfonyl)imide (LiTFSI) or sodium bis(trifluoromethylsulfonyl)imide (NaTFSI) salts. The solutions, designed for ion battery applications, are studied in terms of ions transport properties. Raman Spectroscopy reveals information about the interactions between cations and PAMAM dendrimers as well as full dissociation of the salts in all solutions. Pulsed-field gradient Nuclear Magnetic Resonance (PFG NMR), measured as a function of both temperature and PAMAM concentration, are obtained for the cation, anion, solvent, and dendrimer molecules using lithium (7Li), sodium (23Na), fluorine (19F), and hydrogen (1H) NMR, respectively. It was found that lithium diffusion is slow compared to the larger TFSI anion and decreases with PAMAM concentration due to interactions between cation and dendrimer. Comparison of conductivities calculated from diffusion coefficients using the Nernst–Einstein equation, with conductivity measurements obtained from Impedance Spectroscopy (IS), shows slightly higher IS conductivities, caused among others by PAMAM conductivity. Pracoviště Ústav makromolekulární chemie Kontakt Eva Čechová, cechova@imc.cas.cz ; Tel.: 296 809 358 Rok sběru 2021 Elektronická adresa https://www.mdpi.com/2073-4360/12/7/1595
Počet záznamů: 1