# US 10,483,592 B2 · Method of manufacturing lithium ion battery cells > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,483,592 B2 - Document ID: US10483592B2 - Status: Granted - Kind: B2 - Application number: 15/691,162 - Filed: 2017-08-30 - Published: 2019-02-28 - Granted: 2019-11-19 - Earliest claimed: 2017-08-30 - Assignees: GM Global Technology Operations LLC - Applicants: GM Global Technology Operations LLC - Inventors: Xingcheng Xiao; Mark W. Verbrugge; Mei Cai; Sherman H. Zeng - Web page: https://patentgrep.com/patent/US10483592B2 ## CPC - H01M 10/0585: of accumulators having only flat construction elements, i.e. flat positive electrodes, flat negative electrodes and flat separators - H01M 10/0436: {Small-sized flat cells or batteries for portable equipment} - H01M 50/124: having a layered structure - H01M 50/126: comprising three or more layers - H01M 50/609: Arrangements or processes for filling with liquid, e.g. electrolytes - H01M 50/178: for pouch or flexible bag cells - H01M 50/55: on the same side of the cell - H01M 50/553: Terminals adapted for prismatic, pouch or rectangular cells - H01M 2220/30: Batteries in portable systems, e.g. mobile phone, laptop - Y02E 60/10: Energy storage using batteries - Y02P 70/50: Manufacturing or production processes characterised by the final manufactured product - H01M: PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY - Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION - Y02P: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS ## 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. ## Claims ### Claim 1 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. ### Claim 2 (depends on 1) The method set forth in claim 1 wherein the lithium ion-exchanged zeolite material has pore openings configured to selectively adsorb water molecules from the liquid electrolyte solution, without removing molecules of organic solvent from the liquid electrolyte solution. ### Claim 3 (depends on 1) The method set forth in claim 1 wherein the liquid electrolyte solution is placed in contact with the particles of the lithium ion-exchanged zeolite material such that hydrofluoric acid molecules are removed from the liquid electrolyte solution prior to introducing the liquid electrolyte solution into the electrochemical cell assembly. ### Claim 4 (depends on 1) The method set forth in claim 1 wherein the liquid electrolyte solution is placed in contact with the particles of the lithium ion-exchanged zeolite material by mixing the liquid electrolyte solution with the particles of the lithium ion-exchanged zeolite material in a hermetically sealed vessel prior to introducing the liquid electrolyte solution into the electrochemical cell assembly. ### Claim 5 (depends on 1) The method set forth in claim 1 wherein the liquid electrolyte solution is placed in contact with the particles of the lithium ion-exchanged zeolite material by coating the particles of the lithium ion-exchanged zeolite material on wall surfaces of a flow-through substrate and flowing the liquid electrolyte solution through inner passageways of the flow-through substrate. ### Claim 6 (depends on 1) The method set forth in claim 1 wherein the lithium ion-exchanged zeolite material has pore openings with diameters or widths in the range of 3 angstroms to 7 angstroms. ### Claim 7 (depends on 6) The method set forth in claim 6 wherein the lithium ion-exchanged zeolite material has pore openings defined by 9-membered rings. ### Claim 8 (depends on 1) The method set forth in claim 1 wherein the lithium ion-exchanged zeolite material comprises at least one dehydrated zeolite material exhibiting an Si:Al ratio in the range of 1:1 to 2:1 and having a framework type selected from the group consisting of: CAN, FAU, GME, NAT, -RON, and combinations thereof. ### Claim 9 (depends on 1) The method set forth in claim 1 wherein the lithium ion-exchanged zeolite material comprises at least one dehydrated zeolite material exhibiting an Si:Al ratio in the range of 2:1 to 5:1 and having a framework type selected from the group consisting of: BOG, -CHI, EMT, FAU, LOV, LTL, MAZ, MEI, MOR, OFF, -RON, and combinations thereof. ### Claim 10 (depends on 1) The method set forth in claim 1 wherein the lithium ion-exchanged zeolite material comprises at least one dehydrated zeolite material exhibiting an Si:Al ratio of greater than 5:1 and having a framework type selected from the group consisting of: ASV, BEA, CON, GON, IFR, ISV, MTW, RSN, SFE, STT, VET, VSV, and combinations thereof. ### Claim 11 (depends on 1) The method set forth in claim 1 wherein the lithium salt comprises a lithium cation (Lit) and an anion selected from the group consisting of: ClO4−, AlCl4−, I−, Br−, SCN−, BF4−, B(C6H5)4−, AsF6−, CF3SO3−, N(CF3SO2)2−, PF6−, and combinations thereof. ### Claim 12 (depends on 1) The method set forth in claim 1 wherein the organic solvent is selected from the group consisting of: ethylene carbonate, propylene carbonate, dimethyl carbonate, diethyl carbonate, ethylmethylcarbonate, methyl formate, methyl acetate, methyl propionate, γ-butyrolactone, γ-valerolactone, 1,2-dimethoxyethane, 1,2-diethoxyethane, ethoxymethoxyethane, tetrahydrofuran, 2-methyltetrahydrofuran, and combinations thereof. ### Claim 13 (depends on 1) The method set forth in claim 1 comprising: hermetically sealing the electrochemical cell assembly infiltrated with the liquid electrolyte solution in a cell casing to form a lithium ion battery cell. ### Claim 14 (depends on 13) The method set forth in claim 13 wherein the cell casing comprises a pouch, and wherein the pouch comprises an aluminum foil laminated between one or more polymer layers. ### Claim 15 (depends on 13) The method set forth in claim 13 comprising: electrically connecting the lithium ion battery cell to one or more other lithium ion battery cells to form a battery module. ### Claim 16 (depends on 1) The method set forth in claim 1 wherein the lithium ion-exchanged zeolite material has pore openings defined by 12-membered rings, and wherein the lithium ion-exchanged zeolite material has pore openings with diameters or widths in the range of 6 angstroms to 8 angstroms. ### Claim 17 (depends on 1) The method set forth in claim 1 wherein the lithium ion-exchanged zeolite material has pore openings defined by 12-membered rings and a framework type selected from the group consisting of FAU or BEA. ### Claim 18 (depends on 17) The method set forth in claim 17 wherein the lithium ion-exchanged zeolite material comprises Zeolite Y or Zeolite Beta. ### Claim 19 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. ### Claim 20 (depends on 19) The method set forth in claim 19 wherein the lithium ion-exchanged zeolite material comprises MCM-22.