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Innovative Approach to LiFePO4 Cathode Materials Production

Explore efficient synthesis methods, market insights, and project details for producing high-capacity LiFePO4 cathode materials. Learn about key challenges, approaches, and production costs in the industry.

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Innovative Approach to LiFePO4 Cathode Materials Production

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  1. MINERAL GROUP Address: 1, Institutskaya str., Alexandrov, Vladimir Region 601650 Russia

  2. LiFePO4 for cathode of Li-ion • High theoretical capacity- 170 mAh/g • Low cost of Fe if compare with Co (LiCoO2) Drawbacks: Low Li and electronic conductivity for both LiFePO4 and FePO4 Difficult to control valency 2+ for Fe during synthesis

  3. Approach#1 • Raw materials: Li2CO3 or LiOH, Fe(CH3COO)2, NH4H2PO4 xH2O • Temperature of synthesis 800 centigrade in Ar • Fe(CH3COO)2 too expensive • Low electrochemical capacity

  4. Approach#2 • Raw materials: NH4H2PO4, FeC2O4, Li2CO3 • Temperature of synthesis: 500-800 centigrade in N2 • Low electrochemical capacity

  5. Approach#3 • Formation precursors of LiFePO4 by dissolving in water Li(1+), Fe(3+),PO4(3-) components without pressure. Example: LiOH, FePO4 • Solid state reactions 300-600 centigrade in N2/H2 • Difficult to control Fe (2+) valency • Low electrochemical capacity

  6. Approach#4 ( by Phostech Lithium) • Formation precursors of LiFePO4 by dissolving in water Li(1+), Fe(3+),PO4(3-) components without pressure. • Hydrothermal treatment of precursors • Electrochemical capacity 150 mAh/g • Low yield, secondary products necessary to recycle • Price for China customers 40 USD/kg

  7. Hydrothermal approach by Mineral • Complete recycling of secondary products • Standard autoclaves for quartz synthesis are suitable for using after add special tools • Perfect crystal structure • Electrochemical capacity: 150 mAh/g • No patent issues- new technical solution • Not necessary purchase any gas (Ar,N2,H2 or others)

  8. Efficiency of LFP-C powder production Expected production cost in Korea (including, salaries, taxes) about 10 USD/kg Market price: 23 USD/kg for commercial grade (electrochemical capacity 120 mAh/g), 40 USD/kg for special grade (electrochemical capacity 150 mAh/g)

  9. Market LFP cathode material • Size of the world market about 10 000 tons/year with 50-80% annual growth • Main market: hybrid cars and motorcycles, solar • Phostech Lithium got investments 91 mln USD investments for production 2500 tons/year LFP

  10. 500 nm LFP plates by Mineral

  11. 200 nm LFP plates by Mineral

  12. LFP Agglomerates by Mineral

  13. As-grown material

  14. After milling

  15. TEM after carbon coating

  16. X-ray diffraction

  17. Electrochemical capacity (Moscow State University measurements) versus discharge rate for LFP-C powder from Mineral

  18. Discharge curves (Moscow State University measurements) for LFP-C powder from Mineral

  19. Hanwa Chemical Corp- supercritical water method with capacity 600 tons/year Phostech Lithium – autoclave method with capacity 2500 tons/year

  20. Project of 1000 tons/year • Setup 25 autoclaves 1500 liters each for synthesis and further processing line (milling, carbon coating, etc) • Manufacturing capability 1000 tons/year LFP-C powder • Total investments: 30 millions USD

  21. THANK YOU!

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