Silicon/Carbon (Si/C) Coated Copper Foil as Anode Electrode (Disc, Sheet) for Li-Ion Battery, CLIBCESiC
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Chemical Vapor Deposition (CVD) carbon coating on Silicon (Si) is considered the "gold standard" for commercializing high-capacity silicon anodes. Compared to mechanical mixing or pitch coating, CVD provides a superior interface: (1) Conformal Coverage: CVD creates a continuous, "skin-tight" carbon layer that encapsulates the silicon, even if the particles have complex geometries. (2) Superior Conductivity: The carbon formed via CVD is typically more graphitic and dense, providing a faster electron highway than simple carbon black. (3) Controlled SEI: By shielding the silicon from direct contact with the electrolyte, the CVD layer prevents the constant breaking and reforming of the Solid Electrolyte Interphase (SEI), which is the primary cause of capacity fade in Si anodes.
Silicon/Carbon (Si/C) coated on aluminum foil electrode (disc, sheet) can be used as sodium-ion battery cathode. The round disc shape with single-side coating is suitable for coin cell testing, while the rectangle sheet shape with single- or double-side coating is designed for single-layer or multiple-layer pouch cell testing.
| Part Number | CLIBCESiC (C-LIB-CE-SiC) |
| Current collector | 9 um copper foil |
| Coating Material | Silicon/Carbon (Si/C) powder (carbon was deposited on Si powder by CVD method) |
| Active Material Portion | 90.3% |
| Electrode Features |
(1) Round disc shape: D = 10 -16 mm (other diameter discs are also available). (2) Rectangle sheet size: (a) L140mm*W80mm, Single-Side, 5.5 mg/cm2, 0.94 g/cm3 (b) L140mm*W80mm, Double-Side, 11.0 mg/cm2, 1.0 g/cm3 |
| Package Size |
Round disk D=10-15 mm (50 pcs/pack) Rectangle sheet with SS & DS coating (5 pcs/pack) |
| First Discharging Specific Capacity |
~1350 mAh/g |
| First Columbic Efficiency | 93.8 % |
Notes: (1) Please store the Si/C electrodes in a dry area (glovebox is preferred); (2) The battery electrodes are highly recommended to be dried at 80-100°C in a vacuum oven for 6-12 h before use.
References:
- C. Erk, et al. Toward Silicon Anodes for Next-Generation Lithium Ion Batteries: A Comparative Performance Study of Various Polymer Binders and Silicon Nanopowders, ACS Appl. Mater. Interfaces, 2013, 5, 7299–7307
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H. Li, et al. Revisiting the Preparation Progress of Nano-Structured Si Anodes toward Industrial Application from the Perspective of Cost and Scalability, Adv. Energy Mater., 2022, 12, 2102181
