Cobalt Sulfate Heptahydrate Battery Grade (CoSO4·7H2O)
CAS Number: 10124-43-3
Battery-grade cobalt sulfate heptahydrate (CoSO4·7H2O) is the primary cobalt source for NMC and NCA cathode precursor co-precipitation and for LiCoO2 (LCO) synthesis. Strict control of Ni, Fe, Zn, and Na trace impurities is required to prevent electrochemical performance degradation in the final cathode active material.
Technical Specifications
| Fe (ppm) | ≤2 |
| Na (ppm) | ≤20 |
| Ni (ppm) | ≤10 |
| Zn (ppm) | ≤2 |
| appearance | Pink to red crystalline powder |
| moisture (%) | ≤0.3 |
| Co content (%) | ≥20.5 |
Applications
- NMC cathode precursor co-precipitation cobalt source
- NCA cathode precursor synthesis
- LiCoO2 (LCO) cathode material production
- Cobalt-containing additive for specialty alloy
- Catalyst and battery recycling intermediate
Key Features
- Co ≥20.5% ensures correct stoichiometry in NMC/NCA precursor co-precipitation
- Low Ni cross-contamination (<10 ppm) critical for controlled Ni:Co:Mn ratio in precursor
- Consistent heptahydrate crystalline form ensures reliable dissolution for continuous reactors
- Responsibly sourced cobalt with supply chain traceability documentation available
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