Polysulfide-polyoxide electrolyte membrane for energy storage device
AssigneesThe University of Akron, Nissan North America, Inc.
InventorsThein Kyu, Hyunsang Lee, Jisoo Jeong, Javier Parrondo, Dianne Atienza Hay, Somayeh Zamani
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Abstract
An energy storage device is provided that includes a first electrode, a second electrode, and a polymer electrolyte membrane disposed between the first electrode and the second electrode. The polymer electrolyte membrane includes a copolymer network including a polyoxide and a polysulfide. The polymer electrolyte membrane is prelithiated by deep discharging of the battery of in a voltage range of −0.5 V to 5.0 V such that the polymer electrolyte membrane after deep discharging includes additional lithium ions stored therein as compared with prior to deep discharging.
Claims17
A method of forming a battery having a prelithiated polymer electrolyte membrane, the method comprising:
- forming a polymer electrolyte membrane comprising a copolymer network including a polyoxide and a polysulfide;
- forming a battery including an anode, a cathode and the polymer electrolyte membrane disposed between the anode and the cathode;
- and
- performing deep discharging of the battery in a voltage range of −0.5 V to 5.0 V to prelithiate the polymer electrolyte membrane, where the performing deep discharging includes the battery being discharged from a starting voltage of approximately 2.5 V to 5.0 V down to a final voltage of approximately 0.01 V to −0.5 V;
- at least one of the anode and the cathode comprising a material that includes lithium.
Dependencies are inferred from the claim text.