Abstract
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.
Original language | English |
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Article number | 162057 |
Journal | Journal of Alloys and Compounds |
Volume | 892 |
DOIs | |
Publication status | Published - 2022 Feb 5 |
Keywords
- Carbon nanotubes
- Lithium-ion battery
- Nanocomposites
- Tin selenide
- operando X-ray diffraction
ASJC Scopus subject areas
- Mechanics of Materials
- Mechanical Engineering
- Metals and Alloys
- Materials Chemistry