US 11,942,595 B2
Seasonal energy storage technologies based on rechargeable batteries
Guosheng Li, Richland, WA (US); Vincent L. Sprenkle, Richland, WA (US); Minyuan M. Li, Richland, WA (US); David M. Reed, Richland, WA (US); and Evgueni Polikarpov, Richland, WA (US)
Assigned to Battelle Memorial Institute, Richland, WA (US)
Filed by Battelle Memorial Institute, Richland, WA (US)
Filed on May 25, 2021, as Appl. No. 17/330,305.
Prior Publication US 2022/0393230 A1, Dec. 8, 2022
Int. Cl. H01M 10/0561 (2010.01); H01M 4/02 (2006.01); H01M 4/134 (2010.01); H01M 10/44 (2006.01)
CPC H01M 10/0561 (2013.01) [H01M 4/134 (2013.01); H01M 10/443 (2013.01); H01M 2004/028 (2013.01); H01M 2300/0057 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A rechargeable battery, comprising:
a cathode comprising NiyFe1-y and NiyFe1-yX2, where 0≤y≤1;
an anode comprising Al and MX deposited onto an aluminum current collector;
a porous separator positioned between the cathode and the anode; and
an electrolyte comprising MAlX4, the porous separator impregnated with the electrolyte such that pores of the porous separator are filled with the electrolyte; and
greater than 0 mol % and up to 10 mol % sulfur relative to moles of NiyFe1-y in the cathode, wherein after 2-5 cycles, the sulfur is present as oxidized sulfur species,
wherein M is Na, Li, K, or a combination thereof, and X is CI, Br, I, or a combination thereof,
wherein the anode comprises 50 mol % to 130 mol % MX relative to moles of NiyFe1-y in the cathode, and
wherein the electrolyte is a molten salt electrolyte that is a solid at temperatures less than 50° C.