The technical and supply chain case for natural flake graphite as EV battery anode material — including EU Battery Regulation Annex X traceability requirements and why procurement teams are qualifying SGF-98 and SGF-99 from Skaland mine, Senja Island, Norway.
Despite rapid development of silicon-composite and lithium metal anodes, graphite remains the dominant anode active material in commercial Li-ion batteries — accounting for over 95% of production by volume as of 2024. The reason is well established: graphite intercalates lithium ions reversibly across thousands of cycles with high coulombic efficiency, predictable volume change (~10% linear expansion) and manageable thermal characteristics. Alternatives that offer higher theoretical capacity introduce trade-offs in cycle life, first-cycle loss, or manufacturability that currently limit their share to niche and premium applications.
For battery manufacturers and anode material processors, the procurement question is not whether to source graphite, but which type — natural flake or synthetic — and from which supply chain.
Both natural flake and synthetic graphite are used in commercial Li-ion anodes, often in blends. Each has distinct characteristics relevant to battery performance and supply chain positioning.
Natural flake graphite has high crystallinity, a well-developed graphene layer structure and large platelet morphology. After spheroidisation (rounding of the naturally flaky particle shape), it delivers high tap density (typically 0.85–1.05 g/cm³), excellent rate capability and competitive first-cycle efficiency (~92–94% ICE before coating). Its primary advantage is lower manufacturing energy: the ore is beneficiated and spheroidised, not synthesised at 2800°C. Carbon footprint for natural graphite anode material is approximately 3–5 t CO₂e/t, compared to 15–25 t CO₂e/t for synthetic graphite produced via the Acheson process in China.
Synthetic graphite is manufactured from petroleum or coal-tar pitch coke through a high-temperature graphitisation process. The resulting material has highly controlled morphology, very high purity achievable without beneficiation, and consistent crystallite size. Its disadvantage is energy cost — both financial and environmental — and the carbon footprint penalty noted above. It also requires reliable petroleum coke supply, which carries its own geopolitical dimensions.
The industry trend for passenger EV battery cells is toward increasing natural graphite content, both for cost and sustainability reasons. Several European gigafactory programmes have explicitly stated a preference for European-origin natural graphite to satisfy the EU Battery Regulation's sustainability reporting requirements.
Skaland mine on Senja Island, northern Norway, produces two ultra-pure grades suitable as natural flake graphite feedstock for battery anode material production: SGF-98 (≥98% Cg) and SGF-99 (≥99% Cg).
Both grades are large-flake crystalline graphite with high aspect ratio — the natural platelet shape that underlies their high spheroidisation yield. Spheroidisation yield (the proportion of input material that meets the target D50 after milling and classification) directly affects anode material production economics; higher yield from better-quality flake reduces processing cost per tonne of finished anode material.
| Parameter | SGF-98 | SGF-99 |
|---|---|---|
| Carbon content (Cg) | ≥98% | ≥99% |
| Ash content | ≤2% | ≤1% |
| Moisture | ≤0.5% | |
| Form | Natural flake concentrate | |
| Particle size | Custom D50 on request (typical range D50 100–300 µm for spheroidisation feed) | |
| Spheroidised anode material | Available — specify target D50 and coating requirement | |
| CAS Number | 7782-42-5 | |
| REACH compliance | ✓ Compliant | |
| EU Battery Regulation Annex X | ✓ Traceability documentation available | |
| Origin | Skaland Mine, Senja Island, Norway | |
| MOQ | 20 metric tonnes | |
| Incoterms | FCA Skaland / CIF | |
EU Regulation 2023/1542 (the EU Battery Regulation) imposes new obligations on battery manufacturers placing products on the European market. Under Annex X, manufacturers must carry out supply chain due diligence for a list of materials including natural graphite, documenting the country of origin, the name and location of the processing facility, and the risk management practices applied.
For battery manufacturers sourcing graphite from multi-tier Asian supply chains, satisfying Annex X is a documentation-intensive exercise: traceability from mine through multiple processing steps and trading intermediaries to the anode material producer is difficult to establish and subject to chain-of-custody breaks. The batteries passport requirement, phased in from 2027, will make this documentation visible to end customers and regulators.
Natural flake graphite from Skaland mine simplifies Annex X compliance substantially. There is one mine, one country of origin (Norway), and one processing facility — Skaland, Senja Island. The chain of custody from mine to shipment is transparent and can be documented for Annex X reporting without auditing third-party facilities.
Skaland mine on Senja Island is the only operating natural flake graphite mine in the European Economic Area. Its significance for EU battery supply chains is recognised in the EU Critical Raw Materials Act designation of graphite as a strategic raw material, and in the CRMA's domestic sourcing target of at least 10% by 2030.
For EV battery manufacturers and Tier 1 anode material processors building EU-compliant supply chains, Skaland's geographic position offers several concrete advantages: no export licensing risk (Norway is an EEA member with no graphite export controls), short logistics to European processing facilities, and alignment with EU origin rules for Battery Regulation sustainability requirements.
The mine has operated continuously since 1932. Its 31% average ore grade — the world's highest for an operating flake graphite deposit — means production economics are robust across commodity price cycles. Contract supply commitments are available for battery manufacturers planning multi-year production volumes.
We provide structured qualification support for battery material customers:
Step 1 — Initial specification review: Share your target D50, purity requirements, and annual volume. We confirm achievable grades and particle size range and provide indicative FCA pricing within one business day.
Step 2 — Evaluation sample: Evaluation batches are arranged before full order commitment. Each evaluation sample is supplied with full CoA (carbon content, ash, moisture, D10/D50/D90), REACH SDS, and Country of Origin certificate.
Step 3 — Technical review: If spheroidisation or anode cell performance data is required, we can arrange technical discussions with the Skaland processing team to address specific questions about crystallinity, intercalation characteristics, or custom processing requirements.
Step 4 — Supply agreement: Spot supply (minimum 20 t per order) and annual contract arrangements (fixed or index-linked pricing) are both available.