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SnSe nanocrystals decorated on carbon nanotubes for high-performance lithium-ion battery anodes

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Title
SnSe nanocrystals decorated on carbon nanotubes for high-performance lithium-ion battery anodes
Author(s)
Jin, Aihua; Sue In Chae; Jae-Hyuk Park; Shin-Yeong Kim; Sanghwa Lee; Hogeun Chang; Jeong Hyun Kim; Um, Ji Hyun; Yu, Seung-Ho; Taeghwan Hyeon; Yung-Eun Sung
Publication Date
2022-02
Journal
Journal of Alloys and Compounds, v.892
Publisher
Elsevier BV
Abstract
© 2021 Elsevier B.V.Tin selenide has been considered as one of the most promising anode materials for lithium-ion battery owing to its high theoretical capacity. In this work, a facile colloidal synthetic method was successfully used to obtain nanocomposites comprising ~7 nm SnSe nanocrystals and carbon nanotubes (SnSe NC/CNT). When applied as anode materials in lithium-ion battery, the SnSe NC/CNT nanocomposites exhibited excellent electrochemical performance with a reversible capacity of 706.5 mAh g−1 after 300 cycles at a constant current density of 200 mA g−1. The SnSe NC/CNT nanocomposites also delivered the high reversible capacity of 532.0 mAh g−1 at a high current density of 1.0 A g−1. The SnSe nanocomposites are advantageous to the ion and electron transport. Interconnected by CNT after annealing at 200 °C, SnSe NC/CNT nanocomposites can accommodate the volume expansion even after 300 cycles. The complex conversion and alloying reaction are studied by X-ray diffraction and X-ray absorption near edge structure.
URI
https://pr.ibs.re.kr/handle/8788114/12065
DOI
10.1016/j.jallcom.2021.162057
ISSN
0925-8388
Appears in Collections:
Center for Nanoparticle Research(나노입자 연구단) > 1. Journal Papers (저널논문)
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