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Si-C Silicon-Carbon Single-Sided Anode, 4.5 mg/cm² per side
Single-Sided Anode Sheet
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This electrode sheet is moisture-sensitive and must be handled in dry conditions to prevent performance degradation. Silicon-containing anodes are prone to irreversible capacity loss and interface instability, necessitating a controlled environment during storage and processing.
- Moisture Sensitivity: Exposure to ambient moisture can degrade the coated electrode surface and adversely affect early-cycle performance.
- Mechanical Integrity: Avoid touching, bending, scratching, or contaminating the coated surface during punching, transfer, and stacking to prevent electrode damage.
- Atmospheric Control: Store opened sheets in a dry environment or inert atmosphere to minimize moisture uptake before use.
- Electrochemical Failure Modes: Silicon-related irreversible capacity loss and interface stability issues can affect data consistency if handling protocols are not followed.
This procedure ensures proper handling and preparation of the anode sheet for coin-cell assembly. It emphasizes moisture control and mechanical care to maintain electrode integrity.
Required Equipment: Dry handling environment (e.g., glovebox or dry room), Inert atmosphere storage container (optional)
- Prepare Dry Handling Environment
Use a dry handling environment before cell assembly to reduce moisture exposure on the coated electrode surface. - Store Opened Sheets Properly
Store opened sheets in a dry environment or inert atmosphere to reduce moisture exposure before use. - Handle Coated Surface with Care
Avoid touching, bending, scratching, or contaminating the coated surface during punching, transfer, and stacking. - Calculate Active Material Mass
Calculate active material mass from coating loading, active material ratio, and punched electrode area.
What is the theoretical areal capacity of the Atomfair Si-C/graphite composite anode sheet with SKU AF-BM-S-A1100-CS45-5P0, and how should it be interpreted in cell balancing?
The theoretical areal capacity is approximately 4.5 mAh/cm², calculated from a 4.5 mg/cm² coating loading, 90.30% active material ratio, and 1100 mAh/g composite specific capacity. However, measured capacity depends on electrode area, coating uniformity, electrolyte system, formation procedure, voltage window, and silicon-related irreversible capacity loss, so the theoretical value serves as a starting point for N/P balancing and should be validated experimentally.
What current collector design does this single-sided Si-C/graphite anode sheet use, and why is it specifically suited for silicon-containing anodes?
The electrode uses a double-side carbon-coated copper foil with a 1 µm carbon coating on each side of a 6 µm copper foil, with an areal density of 5.4 mg/cm². The carbon coating improves interfacial contact between the anode coating and current collector, which is particularly relevant for silicon-containing composite anodes where interface stability and electrode integrity can influence early-cycle data.
What handling and storage conditions are required for the Atomfair Si-C/graphite composite anode sheet to maintain its performance for research use?
The sheets must be handled in a dry environment before cell assembly to reduce moisture exposure, and opened sheets should be stored in a dry environment or inert atmosphere. Avoid touching, bending, scratching, or contaminating the coated surface during punching, transfer, and stacking. For coin-cell testing, active material mass should be determined from coating loading, active material ratio, and punched electrode area.
This single-sided Si-C/graphite composite anode sheet, with a 1100 mAh/g composite active-material capacity and 4.5 mg/cm2 coating loading on a carbon-coated copper current collector, is designed for high-capacity anode evaluation, electrolyte screening, and full-cell matching in lithium-ion battery R&D. The carbon-coated collector improves interfacial contact, but the electrode requires dry handling and exhibits significant first-cycle irreversible capacity loss typical of silicon-containing anodes.
Positive
- Carbon-coated copper current collector: The double-side carbon coating (1 µm each side) on 6 µm copper foil improves interfacial contact between the anode coating and current collector, enhancing interface stability and electrode integrity for silicon-containing composite anodes.
- High composite specific capacity: The 1100 mAh/g composite active-material capacity, derived from a Si-C/graphite blend, enables evaluation of higher-capacity anodes compared to standard graphite electrodes, supporting electrolyte screening and full-cell balancing studies.
Trade-offs
- Moisture sensitivity requires dry handling: The coated electrode surface must be handled in a dry environment or inert atmosphere before cell assembly to reduce moisture exposure, which can affect SEI formation and first-cycle efficiency.
- Significant irreversible capacity loss: Silicon-containing composite anodes exhibit notable first-cycle irreversible capacity loss due to SEI formation and silicon-related volume changes, requiring pre-lithiation or careful N/P balancing for full-cell experiments.
Every advanced material, component, equipment, and instrument in our catalog is backed by rigorous testing. We maintain strict internal quality management frameworks and align with CE conformity metrics to deliver transparent, reproducible performance data via our public open-science repository.
To request raw batch performance data, submit formal vendor registration paperwork, or execute a fast-turnaround R&D manufacturing loop, contact us at inquiry@atomfair.com.
Item is dispatched under the Atomfair Shipping & Delivery Framework (Free worldwide shipping on orders over $59 USD excl. heavy equipment). Return is governed by the Atomfair Return & Refund Policy (7-day technical return window).
