Automotive EV Battery Packs

Material Composition Assumptions

The default reference product is a 75 kWh automotive battery pack (NMC811 chemistry) weighing approximately 430 kg, composed of:

• Cathode active material: Nickel-manganese-cobalt oxide in 8:1:1 ratio (NMC811), approximately 60-70 kg per pack. Requires refined nickel sulfate, cobalt sulfate, manganese sulfate, and lithium hydroxide.
• Anode material: Graphite (natural or synthetic), approximately 40-50 kg per pack. Synthetic graphite requires graphitization at ~3000 degC; natural graphite requires mining, purification, and spheroidization.
• Electrolyte: Lithium hexafluorophosphate (LiPF6) in organic carbonate solvent, approximately 15-20 kg per pack.
• Separator: Polyethylene or polypropylene microporous film, approximately 3-5 kg.
• Current collectors: Copper foil (anode) and aluminum foil (cathode), approximately 15-25 kg combined.
• Cell housing: Aluminum prismatic cans or steel cylindrical cans, approximately 30-40 kg.
• Pack-level components: Aluminum or steel pack enclosure, battery management system (BMS), thermal management system (cooling plates, coolant lines), wiring harness, and connectors, approximately 80-120 kg.

NMC811 is used as the default because it is the dominant chemistry for mid-to-premium EVs in Western markets. LFP (lithium iron phosphate) packs have lower per-kWh emissions (~55 kgCO2e/kWh) but require more cells for equivalent range, partially offsetting the per-kWh advantage.

Manufacturing Geography

EV battery manufacturing is concentrated in a few countries with massive capital investment:

• China: CATL, BYD, EVE Energy, and others. China produces approximately 75% of global lithium-ion cells. Major cathode and anode material production also in China.
• South Korea: Samsung SDI, LG Energy Solution, SK Innovation. Major cell producers with global gigafactory footprints.
• EU: CATL (Hungary, Germany), Samsung SDI (Hungary), Northvolt (Sweden), ACC (France/Germany). Rapidly growing EU capacity.
• USA: Tesla Gigafactory (Nevada, Texas), LG/GM (Ultium, Ohio), SK (Georgia), Panasonic (Kansas, Nevada). Inflation Reduction Act driving US capacity buildout.
• Grid intensity (China): 565 gCO2e/kWh (IEA 2024). Used as conservative default since China dominates current production.
• Grid intensity (Sweden): ~13 gCO2e/kWh. Northvolt production has among the lowest grid-related emissions globally.
• Rationale: Cell manufacturing is extremely electricity-intensive. Dry room dehumidification, electrode coating drying, and formation cycling (initial charge/discharge) are the major energy consumers. A typical gigafactory producing 30-50 GWh/year consumes 200-400 MW of continuous power.

Regional Variation

Cell + Pack Region	Grid Intensity	Estimated CCI Score (75 kWh)	Per-kWh Intensity
China (default)	~565 gCO2e/kWh	5,500 kgCO2e	~73 kgCO2e/kWh
South Korea	~430 gCO2e/kWh	4,800 kgCO2e	~64 kgCO2e/kWh
USA	~390 gCO2e/kWh	4,500 kgCO2e	~60 kgCO2e/kWh
Germany	~350 gCO2e/kWh	4,300 kgCO2e	~57 kgCO2e/kWh
Sweden (Northvolt)	~13 gCO2e/kWh	3,200 kgCO2e	~43 kgCO2e/kWh

Note: Grid intensity has a very large impact on EV battery production emissions because cell manufacturing electricity (Scope 2) is approximately 25% of total emissions. The Sweden-to-China delta is approximately 2,300 kgCO2e per pack — equivalent to roughly 6,000-9,000 km of driving a conventional vehicle.

Provenance Override Guidance

A supplier or OEM may override the default CCI score by submitting:

1. Cell manufacturer product carbon footprint: CATL, LG, Samsung SDI, and Panasonic are beginning to publish or certify cell-level PCF data per the Global Battery Alliance (GBA) Battery Passport framework.
2. Cathode material sourcing: Nickel and cobalt refinery emissions vary enormously by geography and process (hydrometallurgical vs. pyrometallurgical). Class 1 nickel from high-efficiency refineries has substantially lower emissions.
3. Cell manufacturing energy data: Factory-level electricity consumption and renewable energy procurement. Formation cycling and dry room energy are key variables.
4. EU Battery Regulation compliance: Starting 2025-2027, EU-marketed EV batteries require declared carbon footprints per the EU Battery Regulation (2023/1542), providing standardized and verified data.
5. Chemistry specification: LFP chemistry reduces per-kWh emissions by approximately 25-30% vs. NMC811. Sodium-ion batteries (emerging) may reduce emissions further by avoiding lithium and cobalt.

Methodology Notes

• CCI score of 5,500 kgCO2e (73 kgCO2e/kWh) represents a conservative estimate for NMC811 packs produced in China. This aligns with the Nature Communications (2024) median of 74 kgCO2e/kWh for NMC811 and PNAS Nexus (2023) reporting 79 kgCO2e/kWh.
• Scope breakdown: Scope 3 dominates at 73% (4,000 kgCO2e), driven by cathode active material production (nickel and cobalt refining are the largest single contributors), anode graphite production, and electrolyte/separator manufacturing. Scope 2 is 25% (1,400 kgCO2e) from cell manufacturing and pack assembly electricity. Scope 1 is 2% (100 kgCO2e) from on-site natural gas for NMP solvent recovery.
• Confidence: High because EV battery production has extensive and rapidly growing LCA literature, including multiple Nature/Science-level meta-analyses and manufacturer-disclosed data driven by EU Battery Regulation requirements.
• Functional unit: One 75 kWh NMC811 battery pack (~430 kg), cradle to gate.
• Use-phase: Excluded. An EV battery pack enables approximately 200,000-300,000 km of driving over its lifetime. The avoided tailpipe emissions from displacing ICE driving typically exceed production emissions within 2-4 years depending on local grid intensity.
• Chemistry sensitivity: LFP packs (~55 kgCO2e/kWh) would score approximately 4,100 kgCO2e for a 75 kWh pack. The chemistry choice can shift total emissions by 25-35%.
• Rapidly evolving field: Battery production emissions per kWh have decreased approximately 20-30% over the past 5 years due to grid decarbonization, manufacturing efficiency improvements, and shifts toward lower-cobalt chemistries. The CCI score should be reviewed annually.