Journal of Semiconductors, Volume. 46, Issue 1, 012605(2025)
Electrospraying Si/SiOx/C and Sn/C nanosphere arrays on carbon cloth for high-performance flexible lithium-ion batteries
Fig. 1. (Color online) Schematic illustration of the synthesis for Si/SiOx/C@CC via the electrospraying process.
Fig. 2. (Color online) (a) XRD pattern of Si/SiOx/C sample. (b) and (c) SEM images of the as-synthesized Si/SiOx/C@CC. (d) and (e) TEM images and (f) HRTEM image of the sample. (g) Elemental mapping images. (h) Raman spectroscopy, (i) and (j) XPS spectra of the Si/Six/C sample.
Fig. 3. (Color online) (a) XRD pattern of Sn/C sample, (b) and (c) SEM images of the as-synthesized Sn/C@CC. (d) and (e) TEM images, (f) EDS elemental mapping and (g) XPS spectrum of Sn/C sample.
Fig. 4. (Color online) Thermogravimetric analysis of (a) Si/SiOx/C powder and (b) Sn/C powder.
Fig. 5. (Color online) Electrochemical characterization of the Si/SiOx/C@CC electrode. (a) CV curves of the first five cycles in the potential range of 0.01−2.0 V at a scan rate of 0.1 mV∙s−1. (b) The 1st, 20th, and 100th lithium-insertion/extraction curves between 0.01 and 2.0 V at a current density of 0.5 A∙g−1. (c) Rate performance at different current densities of 0.5−8 A∙g−1. (d) Cycling performance at current density of 0.5 A∙g−1. (e) Electrochemical impedance spectra (EIS) of the spherical electrode after 10 and 1050 cycles at 0.5 A∙g−1, respectively.
Fig. 6. (Color online) (a) In situ XRD patterns of Li21Si5 peaks collected during cycling and contour plots of peaks intensities as a function of reaction time for the charge−discharge process. (b) Schematic representation and operating principles of rechargeable lithium-ion battery based on Si/Six/C@CC.
Fig. 7. (Color online) Electrochemical characterization of the Sn/C@CC. (a) CV curves of the first five cycles in the potential range of 0.01−2.0 V at a scan rate of 0.1 mV∙s−1. (b) The 1st, 50th, and 100th lithium insertion/extraction curves between 0.01 and 2.0 V at a current density of 0.5 A∙g−1. (c) Rate performance at different current densities of 0.2−3 A∙g−1. (d) Cycling performance at current density of 0.5 A∙g−1.
Fig. 8. (Color online) (a) Schematic illustration for the fabrication of Si/Six/C@CC/liquid electrolyte/LiCoO2 flexible lithium-ion battery. (b) The 1st, 50th, and 100th lithium-insertion/extraction curves between 2.5 and 3.9 V at a current density of 0.5 A∙g−1. (c) Cycling performance at current density of 0.5 A∙g−1. (d) Rate performance at different current densities (0.5−2 A∙g−1). The as-fabricated batteries were measured at (e) various humidity of 50%, 70%, and 90% and (f) various temperature of 10, 25, 35, and 45 °C, respectively. Voltage profiles of the flexible full lithium-ion batteries under (g) various bending angles and (h) various bending time.
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Di Chen, Rui Li, Chunxue Liu, Kai Jiang. Electrospraying Si/SiOx/C and Sn/C nanosphere arrays on carbon cloth for high-performance flexible lithium-ion batteries[J]. Journal of Semiconductors, 2025, 46(1): 012605
Category: Research Articles
Received: Sep. 19, 2024
Accepted: --
Published Online: Mar. 6, 2025
The Author Email: Di Chen (DChen), Kai Jiang (KJiang)