Method of manufacturing lithium ion battery cells
AssigneeGM Global Technology Operations LLC
InventorsXingcheng Xiao, Mark W. Verbrugge, Mei Cai, Sherman H. Zeng
Life of this patent
Estimating the term…
Abstract
A method of manufacturing a lithium ion battery cell. A non-aqueous liquid electrolyte solution is placed in contact with particles of a lithium ion-exchanged zeolite material for a time sufficient to remove water molecules from the liquid electrolyte solution. Thereafter, the liquid electrolyte solution may be introduced into an electrochemical cell assembly and hermetically sealed within a cell casing to form a lithium ion battery cell.
Claims20
A method of manufacturing a lithium ion battery cell, the method comprising:
- providing a non-aqueous liquid electrolyte solution comprising a lithium salt and a nonaqueous, aprotic organic solvent;
- contacting the liquid electrolyte solution with particles of a microporous lithium ion-exchanged zeolite material such that water molecules are removed from the liquid electrolyte solution;
- and then
- introducing the liquid electrolyte solution into an electrochemical cell assembly that includes a plurality of alternating positive and negative electrode layers having porous separator layers interposed in face-to-face contact between opposing faces of the positive and negative electrode layers,
- wherein the liquid electrolyte solution is introduced into the electrochemical cell assembly such that the liquid electrolyte solution infiltrates the porous separator layers and wets the opposing faces of the positive and negative electrode layers, and
- wherein the lithium ion-exchanged zeolite material comprises at least one dehydrated zeolite material having:
- (i) pore openings defined by 9-membered rings and a framework type selected from the group consisting of:
- CHI, LOV, NAB, NAT, RSN, STT, or VSV, or
- (ii) pore openings defined by 12-membered rings and a framework type selected from the group consisting of:
- AFI, AFR, AFS, AFY, ASV, ATO, ATS, BEA, BEC, BOG, BPH, CAN, CON, CZP, DFO, EMT, EON, EZT, FAU, GME, GON, IFR, ISV, IWR, IWV, IWW, LTL, MAZ, MEI, MOR, MOZ, MSE, MTW, NPO, OFF, OSI, -RON, RWY, SAO, SBE, SBS, SBT, SFE, SFO, SOS, SSY, USI, or VET.
A method of manufacturing a lithium ion battery cell, the method comprising:
- providing a non-aqueous liquid electrolyte solution comprising a lithium salt and a nonaqueous, aprotic organic solvent;
- contacting the liquid electrolyte solution with particles of a microporous lithium ion-exchanged zeolite material such that water molecules are removed from the liquid electrolyte solution;
- and then
- introducing the liquid electrolyte solution into an electrochemical cell assembly that includes a plurality of alternating positive and negative electrode layers having porous separator layers interposed in face-to-face contact between opposing faces of the positive and negative electrode layers,
- wherein the liquid electrolyte solution is introduced into the electrochemical cell assembly such that the liquid electrolyte solution infiltrates the porous separator layers and wets the opposing faces of the positive and negative electrode layers,
- wherein the lithium ion-exchanged zeolite material comprises at least one dehydrated zeolite material having 10-membered ring openings and an MWW framework type.
Dependencies are inferred from the claim text.