# US 10,483,576 B2 · Polymer electrolyte membrane > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,483,576 B2 - Document ID: US10483576B2 - Status: Granted - Kind: B2 - Application number: 15/531,596 - Filed: 2015-12-04 - Published: 2017-11-16 - Granted: 2019-11-19 - Earliest claimed: 2014-12-04 - Assignees: LG Chem, Ltd. - Applicants: LG Chem, Ltd. - Inventors: Youngjea Kim; Joong Jin Han; Yunah Yu; Esder Kang; Yong Jin Jang - Web page: https://patentgrep.com/patent/US10483576B2 ## CPC - H01M 8/1051: Non-ion-conducting additives, e.g. stabilisers, SiO2 or ZrO2 - C08G 61/02: Macromolecular compounds containing only carbon atoms in the main chain of the macromolecule, e.g. polyxylylenes - C08G 61/12: Macromolecular compounds containing atoms other than carbon in the main chain of the macromolecule - C08G 81/00: Macromolecular compounds obtained by interreacting polymers in the absence of monomers, e.g. block polymers (involving only carbon-to-carbon unsaturated bond reactions C08F299/00 {; polyester-amides C08G69/44; polyester-imides C08G73/16; polyamides-imides C08G73/14; block- or graft polymers containing polysiloxane sequences C08G77/42}) - C08J 5/2262: {containing fluorine} - H01M 8/1004: characterised by membrane-electrode assemblies [MEA] (H01M8/12 takes precedence) - H01M 8/1025: having only carbon and oxygen, e.g. polyethers, sulfonated polyetheretherketones [S-PEEK], sulfonated polysaccharides, sulfonated celluloses or sulfonated polyesters - H01M 8/1027: having carbon, oxygen and other atoms, e.g. sulfonated polyethersulfones [S-PES] - H01M 8/1032: having sulfur, e.g. sulfonated-polyethersulfones [S-PES] - H01M 8/1048: Ion-conducting additives, e.g. ion-conducting particles, heteropolyacids, metal phosphate or polybenzimidazole with phosphoric acid - H01M 8/188: {by recharging of redox couples containing fluids; Redox flow type batteries} - C08J 2371/10: from phenols - H01M 2008/1095: {Fuel cells with polymeric electrolytes} - H01M 2300/0082: Organic polymers - Y02E 60/50: Fuel cells - H01M: PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY - C08G: MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS - C08J: WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H (working, e.g. shaping, of plastics B29) - Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION ## Abstract The present specification relates to a polymer electrolyte membrane including a polymer and inorganic particles. ## Claims ### Claim 1 A polymer electrolyte membrane comprising: a polymer including a unit represented by the following Chemical Formula 1; and inorganic particles: wherein, in Chemical Formula 1, A is —SO3H, —SO3−M+, —COOH, —COO−M+, —PO3H2, —PO3H−M+, —PO32−2M+, —O(CF2)mSO3H, —O(CF2)mSO3−M+, −O(CF2)mCOOH, −O(CF2)mCOO−M+, —O(CF2)mPO3H2, —O(CF2)mPO3H−M+or —O(CF2)mPO32−2M+; m is an integer of 2 to 6; M is a group 1 element; R1 and R2 are the same as or different from each other, and each independently a halogen group; and n is an integer of 2 to 10, and structures in the 2 to 10 parentheses are the same as or different from each other. ### Claim 2 (depends on 1) The polymer electrolyte membrane of claim 1, wherein the inorganic particles have a particle diameter of 5 nm to 50 μm. ### Claim 3 (depends on 1) The polymer electrolyte membrane of claim 1, wherein the inorganic particles are one, two or more selected from the group consisting of inorganic matters, heteropolyacids and inorganic acids. ### Claim 4 (depends on 1) The polymer electrolyte membrane of claim 1, wherein the inorganic particles are provided in a dispersed form in the polymer electrolyte membrane. ### Claim 5 (depends on 1) The polymer electrolyte membrane of claim 1, wherein, based on a total solid content of the polymer electrolyte membrane, a content of the inorganic particles is from 0.05 weight % to 20 weight %, and a content of the polymer is from 80 weight % to 99.95weight %. ### Claim 6 (depends on 1) The polymer electrolyte membrane of claim 1, wherein a first unit represented by Chemical Formula 1 is represented by any one of the following Chemical Formulae 1-1 to 1-9: ### Claim 7 (depends on 1) The polymer electrolyte membrane of claim 1, wherein the polymer includes the unit represented by Chemical Formula 1 in 1 mol % to 100 mol %. ### Claim 8 (depends on 1) The polymer electrolyte membrane of claim 1, wherein the polymer is a random polymer. ### Claim 9 (depends on 1) The polymer electrolyte membrane of claim 1, wherein the polymer is a block polymer including a hydrophilic block; and a hydrophobic block, and the hydrophilic block includes the unit represented by Chemical Formula 1. ### Claim 10 (depends on 9) The polymer electrolyte membrane of claim 9, wherein the hydrophilic block and the hydrophobic block are included in a molar ratio of 1:0.1 to 1:10 in the polymer. ### Claim 11 (depends on 1) The polymer electrolyte membrane of claim 1, wherein the polymer further includes a brancher derived from a compound represented by the following Chemical Formula 2; or a brancher represented by the following Chemical Formula 3: wherein, in Chemical Formulae 2 and 3, X is S; O; CO; SO; SO2; NR; a hydrocarbon-based or fluorine-based assembly; 1 is an integer of 0 to 10; when 1 is 2 or greater, two or more Xs are the same as or different from each other; Y1 and Y2 are the same as or different from each other, and each independently NRR; an aromatic ring in which one, two or more are substituted with substituents selected from the group consisting of a hydroxyl group and a halogen group; or an aliphatic ring in which one, two or more are substituted with substituents selected from the group consisting of a hydroxyl group and a halogen group; R is an aromatic ring substituted with a halogen group; or an aliphatic ring substituted with a halogen group; and Z is a trivalent organic group. ### Claim 12 (depends on 1) The polymer electrolyte membrane of claim 1, which has ion conductivity of greater than or equal to 0.01 S/cm and less than or equal to 0.5 S/cm. ### Claim 13 (depends on 1) The polymer electrolyte membrane of claim 1, which has an ion exchange capacity (IEC) value of 0.01 mmol/g to 5 mmol/g. ### Claim 14 (depends on 1) The polymer electrolyte membrane of claim 1, which has a thickness of 1 μm to 500 μm. ### Claim 15 (depends on 1) The polymer electrolyte membrane of claim 1, which is a reinforced membrane further including a substrate. ### Claim 16 (depends on 1) A membrane-electrode assembly comprising: an anode; a cathode; and the polymer electrolyte membrane of claim 1 provided between the anode and the cathode. ### Claim 17 (depends on 16) A polymer electrolyte-type fuel cell comprising: two more of the membrane-electrode assemblies of claim 16; a stack including a bipolar plate provided between the membrane-electrode assemblies; a fuel supplying unit supplying fuel to the stack; and an oxidizer supplying unit supplying an oxidizer to the stack. ### Claim 18 (depends on 1) A redox flow battery comprising: a positive electrode cell including a positive electrode and a positive electrode liquid electrolyte; a negative electrode cell including a negative electrode and a negative electrode liquid electrolyte; and the polymer electrolyte membrane of claim 1 provided between the positive electrode cell and the negative electrode cell.