Fe3P impurity phase in high-quality LiFePO4: X-ray diffraction and neutron-graphical studies

Fe3P impurity phase in high-quality LiFePO4: X-ray diffraction and neutron-graphical studies Full article

Journal

Ionics
ISSN: 0947-7047 , E-ISSN: 1862-0760

Output data

Year: 2017, Volume: 23, Number: 9, Pages: 2293-2300 Pages count : 8 DOI: 10.1007/s11581-017-2068-z

Tags

Impurity; Li-ion batteries; SAPNS; XRD

Authors

Ershenko Eugeny ¹ , Bobyl Alexander ¹ , Boiko Mikhail ¹ , Zubavichus Yan ² , Runov Vladimir ³ , Trenikhin Mikhail ⁴ , Sharkov Mikhail ¹

Affiliations

1	Ioffe Physical Technical Institute, Russian Academy of Sciences, St. Petersburg, 194021, Russian Federation
2	National Research Center “Kurchatov Institute”, Moscow, 123182, Russian Federation
3	Konstantinov Petersburg Nuclear Physics Institute, National Research Center “Kurchatov Institute”, Gatchina, 188300, Russian Federation
4	Institute for Problems of Hydrocarbon Processing, Siberian Branch, Russian Academy of Sciences, Omsk, 644040, Russian Federation

High discharge capacity and long life cycles of electrodes fabricated from various LiFePO4 powders have been used to select samples for detailed structural studies. In some samples, the presence of ferromagnetic Fe3P crystallites was revealed by the synchrotron X-ray diffraction analysis, with the integral intensity ratio of the peaks Fe3P (231) and LiFePO4 (112) equal to ∼1/12. Small-angle polarized neutron scattering (SAPNS) detected the presence of magnetic nuclear contrasting regions with size of 17 ± 1 nm. The average diameter of LiFePO4 crystallites is 230 nm, and Fe3P crystallites were found as 17 × 54 nm2 plates. The high quality of these samples was provided by their manufacturer via synthesis of the Fe3P impurity phase. It can be stated that the set of studies, developed in the study, is helpful in a search for new effective impurity phases and in optimization of their parameters. © 2017, Springer-Verlag Berlin Heidelberg.

Ershenko E. , Bobyl A. , Boiko M. , Zubavichus Y. , Runov V. , Trenikhin M. , Sharkov M.
Fe3P impurity phase in high-quality LiFePO4: X-ray diffraction and neutron-graphical studies
Ionics. 2017. V.23. N9. P.2293-2300. DOI: 10.1007/s11581-017-2068-z WOS Scopus РИНЦ OpenAlex

Submitted:	Dec 12, 2016
Accepted:	Mar 8, 2017
Published online:	Mar 20, 2017
Published print:	Sep 1, 2017

Web of science:	WOS:000407595100008
Scopus:	2-s2.0-85015713021
Elibrary:	31030254
OpenAlex:	W2598276721

DB	Citing
Scopus	8
Web of science	8
Elibrary	1
OpenAlex	10