TY - JOUR
T1 - Deciphering the effect of the heat treatment on the electrodeposited silicon anode for Li-ion batteries
AU - Sohel, Ikramul Hasan
AU - Öztürk, Tarık
AU - Aydemir, Umut
AU - Peighambardoust, Naeimeh Sadat
AU - Duygulu, Özgür
AU - Işık-Gülsaç, Işıl
AU - Altun, Mustafa
AU - Ateş, Mehmet Nurullah
N1 - Publisher Copyright:
© 2022 Elsevier Ltd
PY - 2022/11/30
Y1 - 2022/11/30
N2 - In this study, we report a facile way to improve the stability of electroplated Silicon (Si) electrodes through heat treatment. Electrodeposition of Si is carried out on a porous current collector followed by the heat treatment under an oxygen-free environment at 300 °C, 350 °C, and 400 °C. It is shown that as the heat treatment temperature increases, the cycling stability of the Si anode also dramatically improves. The Si electrode heat treated at 400 °C also keeps the quality of Si even after exposing the electrode to the air for up to 7 days which relieves the handling burden of Si in the ambient atmosphere. The striking difference allows the Si electrode heat treated at 400 °C to maintain its 77 % capacity even after exposure to air for one week. The outstanding electrochemical performance of the electrodeposited Si electrodes heat treated at various temperatures is characterized by thermogravimetric analysis coupled with fourier transform infrared spectroscopy (TGA-FTIR), X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), high-resolution transmission electron microscopy (HR-TEM) coupled with energy dispersive spectrometry and selected area electron diffraction (SAED), Raman spectroscopy, electrochemical cycling, and electrochemical impedance spectroscopy (EIS) techniques.
AB - In this study, we report a facile way to improve the stability of electroplated Silicon (Si) electrodes through heat treatment. Electrodeposition of Si is carried out on a porous current collector followed by the heat treatment under an oxygen-free environment at 300 °C, 350 °C, and 400 °C. It is shown that as the heat treatment temperature increases, the cycling stability of the Si anode also dramatically improves. The Si electrode heat treated at 400 °C also keeps the quality of Si even after exposing the electrode to the air for up to 7 days which relieves the handling burden of Si in the ambient atmosphere. The striking difference allows the Si electrode heat treated at 400 °C to maintain its 77 % capacity even after exposure to air for one week. The outstanding electrochemical performance of the electrodeposited Si electrodes heat treated at various temperatures is characterized by thermogravimetric analysis coupled with fourier transform infrared spectroscopy (TGA-FTIR), X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), high-resolution transmission electron microscopy (HR-TEM) coupled with energy dispersive spectrometry and selected area electron diffraction (SAED), Raman spectroscopy, electrochemical cycling, and electrochemical impedance spectroscopy (EIS) techniques.
KW - Electrodeposition
KW - Lithium-ion batteries
KW - Silicon anode
UR - http://www.scopus.com/inward/record.url?scp=85139594068&partnerID=8YFLogxK
U2 - 10.1016/j.est.2022.105817
DO - 10.1016/j.est.2022.105817
M3 - Article
AN - SCOPUS:85139594068
SN - 2352-152X
VL - 55
JO - Journal of Energy Storage
JF - Journal of Energy Storage
M1 - 105817
ER -