0523921 - ÚJF 2021 RIV GB eng J - Journal Article
Ceccio, Giovanni - Horák, Pavel - Cannavó, Antonino - Torrisi, Alfio - Hnatowicz, Vladimír - Vacík, Jiří
Distribution of lithium in doped nuclear pores of polyethylene terephthalate by neutron depth profiling.
Radiation Effects and Defects in Solids. Roč. 175, 3-4 (2020), s. 325-331. ISSN 1042-0150. E-ISSN 1029-4953
R&D Projects: GA MŠMT LM2015056; GA MŠMT EF16_013/0001812
Institutional support: RVO:61389005
Keywords : thermal neutrons * polyethylene terephthalate * lithium * lithium-ion batteries
OECD category: Materials engineering
Impact factor: 1.141, year: 2020 ; AIS: 0.164, rok: 2020
Method of publishing: Limited access
Result website:
https://doi.org/10.1080/10420150.2019.1701464DOI: https://doi.org/10.1080/10420150.2019.1701464

In this paper, doping of porous polyethylene terephthalate membrane using Li-based solution is described and analyzed by nuclear analytic methods. In recent years, the polymeric porous membranes have been studied as advanced battery separators in various applications, such as portable electronic devices or electric vehicles. Apart from mechanical stability, the separators also provide electrical separation and ionic transport between the electrodes during charging and discharging processes. For application of the membranes, it is important to follow the Li distribution in the separator material over time. In this work, the distribution of Li in the porous PET foils, adepts for Li ion battery separators, was analyzed by Neutron Depth Profiling and the 3D shape of the etched pores by Ion Transmission Spectroscopy. The data obtained show that Li can be incorporated, in a passive way in the micropores in large quantities, but its amount is still limited and does not depend on time of doping. Here, the first data are presented.
Permanent Link: http://hdl.handle.net/11104/0308211