Scientific Achievement

Achieved maximum theoretical capacity for the Mg²⁺/Mo₆S₈ system, demonstrated capability for rapid test and prototype of multiple cathodes and electrolyte.

Significance and Impact

• Revealed the performance differences in electrolyte and cathode
• Showed strong cycling performance evolution dependent on electrolyte chemistry, synthetic route, depth of cycle
• Data feeds back to synthetic groups and electrolyte groups, as well as modeling groups
• Demonstrated/validated the capability of precommercial prototyping standard
• The Mg²⁺/Mo₆S₈ may not fulfill JCESR’s requirements
• Highlights the electrode/electrolyte compatibility challenge
• Establishes the value of prototyping for meeting JCESR’s goals

Research Details

• Cathode materials from ANL, University of Waterloo, and Bar-Ilan University built into test cathodes
• Cells assembled with either Dichlorocomplex electrolyte or All Phenyl Complex electrolyte and tested vs. temperature and rate

Work performed at Sandia National Laboratory (JCESR partner) and Lawrence Berkeley National Laboratory. Materials sourced from University of Waterloo, Argonne National Laboratory, and Bar-Ilan University, Israel.

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