TY - JOUR

T1 - Structure and electrochemical characterization of SnO x /Sn@MWCNT composites formed by pulsed ion beam irradiation

AU - Korusenko, P. M.

AU - Nesov, S. N.

AU - Bolotov, V. V.

AU - Povoroznyuk, S. N.

AU - Sten'kin, Yu A.

AU - Pushkarev, A. I.

AU - Fedorovskaya, E. O.

AU - Smirnov, D. A.

N1 - Publisher Copyright: © 2019 Elsevier B.V.

PY - 2019/7/15

Y1 - 2019/7/15

N2 - The influence of irradiation by pulsed ion beam on the morphology, structure, and chemical composition of a composite based on multiwalled carbon nanotubes (MWCNTs) and tin dioxide (SnO 2-x @MWCNTs) was investigated. It has been established that irradiation of the composite by pulsed ion beam leads to the formation of Sn/SnO x core-shell nanoparticles, which adhere to the surface of the MWCNTs. The “core” is metallic Sn and the “shell” is amorphous SnO x . A uniform distribution of Sn/SnO x nanoparticles on the surface of the MWCNTs was noted, and the maximal concentration of tin in both volume and surface layer was achieved by triple irradiation with an energy density of 0.5 J/cm 2 . This composite exhibited good electrochemical performance as an anode material for lithium-ion batteries, delivering 1494 mA h g −1 as a first discharge capacity and 634 mA h g −1 discharge capacity (72% capacity retention) after 30 cycles of charge/discharge.

AB - The influence of irradiation by pulsed ion beam on the morphology, structure, and chemical composition of a composite based on multiwalled carbon nanotubes (MWCNTs) and tin dioxide (SnO 2-x @MWCNTs) was investigated. It has been established that irradiation of the composite by pulsed ion beam leads to the formation of Sn/SnO x core-shell nanoparticles, which adhere to the surface of the MWCNTs. The “core” is metallic Sn and the “shell” is amorphous SnO x . A uniform distribution of Sn/SnO x nanoparticles on the surface of the MWCNTs was noted, and the maximal concentration of tin in both volume and surface layer was achieved by triple irradiation with an energy density of 0.5 J/cm 2 . This composite exhibited good electrochemical performance as an anode material for lithium-ion batteries, delivering 1494 mA h g −1 as a first discharge capacity and 634 mA h g −1 discharge capacity (72% capacity retention) after 30 cycles of charge/discharge.

KW - Composite

KW - Core-shell

KW - Li-ion batteries

KW - Multiwalled carbon nanotubes

KW - Pulsed ion beam

KW - Tin-tin oxide

KW - STORAGE

KW - ANODE MATERIAL

KW - CARBON NANOTUBES

KW - NANOPARTICLES

KW - LI-ION

KW - FACILE SYNTHESIS

KW - TIN OXIDE

KW - NANOCOMPOSITE

KW - LITHIUM

KW - ELECTRONIC-STRUCTURE

UR - http://www.scopus.com/inward/record.url?scp=85065014838&partnerID=8YFLogxK

U2 - 10.1016/j.jallcom.2019.04.066

DO - 10.1016/j.jallcom.2019.04.066

M3 - Article

AN - SCOPUS:85065014838

VL - 793

SP - 723

EP - 731

JO - Journal of Alloys and Compounds

JF - Journal of Alloys and Compounds

SN - 0925-8388

ER -