Novel electrolytic neodymium production process

A RuO2-coated graphite DSA anode lowers cell voltage and thus energy consumption. 
A RuO2-coated graphite DSA anode lowers cell voltage and thus energy consumption. 

CMI researchers from Case Western Reserve University conducted the research for this highlight.

Innovation
Development of an electrode that enables stable and energy-efficient Nd electrowinning, and a novel electrolyte to achieve high Nd purity.

Achievement
Use of proprietary dimensionally-stable anode (“G-RuO2“ DSA) enables stable, energy-efficient Nd electrolysis from chloride melts with no CO2 or PFC emissions. Nd purity of 98 wt% achieved.

Significance and Impact
Results confirm that the proposed chloride molten salt route (patents pending) enables sustainable (CO2-free) and efficient production of high-purity Nd. 

Hub Goal Addressed
Development of sustainable, scalable rare earth metals production capability.

Images of electrowon Nd, and associated SEM/EDS confirming that purity approaching 98 wt% is achieved. 
Images of electrowon Nd, and associated SEM/EDS confirming that purity approaching 98 wt% is achieved.