Ji, H.; Liu, Z.; Li, X.; Li, J.; Yan, Z.; Tang, K. Recycling Silicon Waste from the Photovoltaic Industry to Prepare Yolk–Shell Si@void@C Anode Materials for Lithium–Ion Batteries. Processes2023, 11, 1764.
Ji, H.; Liu, Z.; Li, X.; Li, J.; Yan, Z.; Tang, K. Recycling Silicon Waste from the Photovoltaic Industry to Prepare Yolk–Shell Si@void@C Anode Materials for Lithium–Ion Batteries. Processes 2023, 11, 1764.
Ji, H.; Liu, Z.; Li, X.; Li, J.; Yan, Z.; Tang, K. Recycling Silicon Waste from the Photovoltaic Industry to Prepare Yolk–Shell Si@void@C Anode Materials for Lithium–Ion Batteries. Processes2023, 11, 1764.
Ji, H.; Liu, Z.; Li, X.; Li, J.; Yan, Z.; Tang, K. Recycling Silicon Waste from the Photovoltaic Industry to Prepare Yolk–Shell Si@void@C Anode Materials for Lithium–Ion Batteries. Processes 2023, 11, 1764.
Abstract
Silicon has a theoretical specific capacity of 4200 mAh g−1, which is considered to have significant potential for anode materials in lithium-ion batteries (LIBs). However, the volume change that occurs in silicon during charging and discharging affects the development of commercial applications. In this work, a yolk-shell structured Si@void@C anode material has been developed to address this problem. The silicon nanoparticle yolk material is obtained by recycling kerf-loss (KL) Si waste from the photovoltaic industry, the carbon shell is prepared via a hydrothermal process with glucose, and the sacrificial interlayer is Al2O3. The synthesized material is used to fabricate anodes that show a high reversible capacity of 836 mAh g−1 at the current density of 0.1 A g−1 after 100 cycles, with a Coulomb efficiency of 71.4%. This work demonstrates a relatively low-cost approach to turn KL Si waste into value-added materials for LIBs.
Keywords
Lithium-ion batteries; Anode; Kerf-loss Si waste; Yolk-shell structure
Subject
Chemistry and Materials Science, Electrochemistry
Copyright:
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