Free-standing SnSe@C nanofiber anode material for low-temperature lithium-ion batteries

• Published in: Journal of Power Sources Advances 2023-10, Vol.24, p.100128, Article 100128
• Main Authors: Rakhmetova, Aiym, Belgibayeva, Ayaulym, Kalimuldina, Gulnur, Nurpeissova, Arailym, Bakenov, Zhumabay
• Format: Article
• Language: English
• Subjects: Binder free; Free-standing anode; Low-temperature lithium-ion batteries; Stannous selenide; Tin selenide
• ISSN: 2666-2485; 2666-2485
• DOI: 10.1016/j.powera.2023.100128

A novel approach to develop a low-temperature lithium-ion battery (LIB) based on tin selenide (SnSe) and carbon (C) nanofibers as the active electrode material has been successfully achieved. The SnSe@C nanofiber anode exhibited excellent electrochemical properties, such as high capacity and good rate capability. The anode maintained a consistent charge capacity of ∼923 mAh g−1 at a current rate of 0.1 A g−1 over 100 cycles at room temperature. Furthermore, investigated for the first time at low temperatures, the SnSe@C nanofiber anode exhibited superior capacity (∼430 mAh g−1 at −20 °C) compared to conventional graphite electrode (∼25 mAh g−1 at −20 °C). The proposed SnSe@C nanofiber anode demonstrated a great potential to be applied for developing next-generation LIBs with improved low-temperature performance. •A homogeneous SnSe nanodots within the carbon fiber framework was achieved.•SnSe@C nanofiber anode exhibited a high capacity of 923 mAh g−1 after 100 cycles.•SnSe@C achieved a significantly higher capacity of 430 mAh g−1 at −20 °C.