Dimensionally-stable anode for molten salt electrolysis of neodymium in chloride melts

side-by-side images compare anode shape before and after electrolysis, demonstrating stability
Anode retains shape after electrolysis, demonstrating stability

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

Innovation   
A dimensionally-stable anode (DSA) that does not get consumed and thus allows energy-efficient and ‘continuous’ metal processing.

Achievement

  • Novel PGM-free metal-oxide DSA was fabricated and tested during actual Nd electrolysis. It showed no appreciable shape or size change after ~30min electrolysis, confirming that it does exhibit dimensional stability. 
  • Longer duration testing is planned as the next step.

Significance and Impact   
First demonstration of successful electrolysis at high rates using a PGM-free dimensionally stable anode.

Hub Goal Addressed   
Energy-efficient, continuous Nd metal production.

Cell voltage traces also demonstrating stability over 30-minute electrolysis.