CMI scientists at Oak Ridge National Laboratory conducted this research.
Energy-efficient concentration of LiCl recovered from geothermal brine has been achieved, where LiCl concentration increases from 35 g/L to 175 g/L
Significance and impact
The technology concentrates high-purity LiCl for efficient conversion into Li2CO3 or Li(OH), feedstocks for fabrication of lithium ion batteries. Energy savings of >90% vs thermal evaporation or > $60/m3 of water removal can be obtained.
Details and next steps
- Stable performance for >500 hours
- No cation transfer from draw solution
- LiCl purity: >99.99 wt%
- Hot operating temperature: 75–80°C
- Optimize process to increase water flux
- Work with partner to scale up for demonstration and commercialization