SI-C/GRAPHITE COMPOSITE SINGLE-SIDED ANODE SHEET

This single-sided Si-C/graphite composite anode sheet is designed for lithium-ion battery R&D using a 1100 mAh/g composite active-material capacity grade and a customizable areal-loading target within 4-6 mg/cm² per side. It is intended for high-capacity anode evaluation, electrolyte screening, and early-stage full-cell matching when the project requires a controlled loading target within this range.

For upstream powder selection, see Atomfair lithium-ion anode materials. For projects requiring a different Si-C/graphite blend, coating side, current collector, sheet size, roll format, or customer-defined formulation, review Atomfair custom battery electrode coating service.

Product Specification	Value
Product Type	Si-C/graphite composite single-sided anode electrode sheet for lithium-ion battery research
Active Material System	Si-C / graphite composite active material
Composite Specific Capacity	1100 mAh/g, based on active material mass
Coating Loading	4-6 mg/cm² per side; final loading target confirmed by RFQ
Coating Side	Single-sided
Formula	Atomfair mature Si-C/graphite formulation or customer-supplied formulation; active-material ratio confirmed per RFQ
Current Collector	Carbon-coated copper foil as standard; bare copper foil or other collector options can be reviewed by RFQ
Current Collector Structure	1 µm carbon coating / 6 µm copper foil / 1 µm carbon coating
Coating Area	Custom sheet size, pre-cut format, or roll/sheet format by RFQ
Coating Process	Wet process, unless otherwise specified during project confirmation
Pack Size	Confirmed according to sheet size, quantity, and packaging requirement

Material Architecture and Capacity Basis

This electrode uses a Si-C/graphite composite design. The listed 1100 mAh/g value is the capacity grade for the composite active material used in the electrode formulation; it is not a pure silicon-carbon material label.

The 4-6 mg/cm² value is the supported customization window for the areal-loading target. The final coating loading should be confirmed during RFQ according to the customer’s cell design, electrode size, formulation, and testing plan.

Electrode Loading and Areal Capacity

Areal capacity is often more useful than gravimetric capacity alone because it connects active-material capacity to cell balancing. For this RFQ product, the theoretical areal capacity should be calculated from the confirmed loading target, confirmed active-material ratio, and 1100 mAh/g composite active-material capacity.

Example calculation using a confirmed 5.0 mg/cm² loading target and 90.30% active material reference: 5.0 mg/cm² x 90.30% x 1100 mAh/g / 1000 ≈ 5.0 mAh/cm².

Current Collector Design

The standard configuration uses carbon-coated copper foil for silicon-containing composite anodes. Compared with bare copper foil, carbon-coated copper foil can improve interfacial contact between the anode coating and current collector, which is especially relevant for Si-C/graphite electrodes.

Bare copper foil or alternative current collector structures can be reviewed when required by the customer’s existing cell design, control experiment, or supplied electrode formulation.

Research Use Case	What This Product Helps Evaluate
High-capacity anode evaluation	Studies of Si-C/graphite composite anodes with higher capacity than standard graphite electrodes.
Electrolyte and additive screening	Comparison of electrolyte systems under silicon-containing anode conditions, including SEI formation behavior and first-cycle efficiency sensitivity.
Loading-window comparison	Evaluation of project-specific loading targets within the 4-6 mg/cm² per-side customization window before moving to higher loading designs.
Full-cell matching	Early-stage N/P balancing and cathode loading matching for lithium-ion full-cell experiments.

Customizable Item	Available Direction
Sheet Size	Custom sheet size, punched disc, sheet format, or roll format
Formula	Based on Atomfair mature formulation or customer-supplied formulation
Current Collector	Carbon-coated copper foil as standard; other collector options by RFQ
Packaging	Sheet count, dry packaging, vacuum packaging, or inert-gas packaging by RFQ

Handling, Storage and Pre-Use Treatment

Use a dry handling environment before cell assembly to reduce moisture exposure on the coated electrode surface.
Store opened sheets in a dry environment or inert atmosphere to reduce moisture exposure before use.
Avoid touching, bending, scratching, or contaminating the coated surface during punching, transfer, and stacking.
For coin-cell testing, determine active material mass from the confirmed loading target, active-material ratio, and punched electrode area.

Research Need	Related Atomfair Category	Best For
Start from active material selection	Lithium-Ion Anode Materials	Selecting Si-C/graphite powders before coated-electrode testing.
Compare ready-to-use anode sheets	Lithium-Ion Anode Electrode Sheets	Comparing graphite, Si/C, wet-process, dry-process, single-sided, and double-sided sheets.
Match a cathode for full-cell work	Lithium-Ion Cathode Electrode Sheets	Lithium-ion full-cell balancing and N/P ratio design.
Build a pouch-cell research platform	Lithium-Ion Dry Pouch Cells	Electrolyte filling, formation studies, and early full-cell evaluation.
Change the electrode specification	Custom Battery Electrode Coating Service	Custom loading, coating area, collector, formulation, and roll or sheet format.
Plan the wider battery R&D workflow	Battery Research Materials, Cells & Diagnostics Guide	Connecting materials, electrode sheets, cells, testing, and diagnostics.

Tailored Solutions for Research

Contact our engineering team for technical support or institutional quotation requests.

Email: inquiry@atomfair.com

Si-C/Graphite Composite

Si-C/Graphite Composite Single-Sided Anode Sheet ATOMFAIR®