# US 2019/0173130 A1 · Lithium-ion-conducting composite material and process for producing > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2019/0173130 A1 - Document ID: US20190173130A1 - Status: Published application - Kind: A1 - Application number: 16/208,642 - Filed: 2018-12-04 - Published: 2019-06-06 - Earliest claimed: 2017-12-04 - Assignees: Schott AG - Applicants: Schott AG - Inventors: Jörg Schuhmacher; Philipp Treis; Jochen Drewke; Hans-Joachim Schmitt; Rolf Samsinger; Andreas Roters; Meike Schneider; Yvonne Menke-Berg - Web page: https://patentgrep.com/patent/US20190173130A1 ## CPC - H01M 10/0565: Polymeric materials, e.g. gel-type or solid-type - C03C 4/18: for ion-sensitive glass - C03C 10/00: Devitrified glass ceramics, i.e. glass ceramics having a crystalline phase dispersed in a glassy phase and constituting at least 50% by weight of the total composition - H01M 10/052: Li-accumulators - H01M 10/0525: Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries - H01M 2300/0091: in the form of mixtures - Y02E 60/10: Energy storage using batteries - H01M: PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY - C03C: CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS - Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION ## Abstract A lithium-ion-conducting composite material and process of producing are provided. The composite material includes at least one polymer and lithium-ion-conducting particles. The particles have a sphericity Ψ of at least 0.7. The composite material includes at least 20 vol % of the particles for a polydispersity index PI of the particle size distribution of <0.7 or are present in at least 30 vol % of the composite material for the polydispersity index in a range from 0.7 to <1.2, or are present in at least 40 vol % of the composite material for the polydispersity index of >1.2. ## Claims ### Claim 1 A lithium-ion-conducting composite material, comprising: a polymer, and lithium-ion-conducting particles having a sphericity Ψ of at least 0.7, wherein the particles are present in at least 20 vol % of the composite material for a polydispersity index of particle size distribution of <0.7, or are present in at least 30 vol % of the composite material for the polydispersity index in a range from 0.7 to <1.2, or are present in at least 40 vol % of the composite material for the polydispersity index of >1.2. ### Claim 2 (depends on 1) The lithium-ion-conducting composite material of claim 1, wherein the polymer comprises a material selected from a group consisting of polyethylene oxide, derivatives of polyethylene oxide, polyvinyl butyral, and combinations thereof. ### Claim 3 (depends on 2) The lithium-ion-conducting composite material of claim 2, wherein the polymer comprises at least one lithium-ion-conducting compound. ### Claim 4 (depends on 2) The lithium-ion-conducting composite material of claim 2, wherein the polymer comprises bistrifluoromethanesulfonimidate as a lithium-ion-conducting compound. ### Claim 5 (depends on 1) The lithium-ion-conducting composite material of claim 1, wherein the polymer comprises at least one lithium-ion-conducting compound. ### Claim 6 (depends on 1) The lithium-ion-conducting composite material of claim 1, wherein the polymer comprises bistrifluoromethanesulfonimidate as a lithium-ion-conducting compound. ### Claim 7 (depends on 1) The lithium-ion-conducting composite material of claim 1, wherein the particles comprise a lithium-ion-conducting compound selected from the group consisting of lithium lanthanum zirconate (LLZO), lithium aluminium titanium phosphate (LATP), compounds with garnet-like crystal structure, compounds having crystal structure isostructural with NaSICon, and combinations thereof. ### Claim 8 (depends on 1) The lithium-ion-conducting composite material of claim 1, wherein the particles have an average particle diameter of 0.02 μm to 100 μm. ### Claim 9 (depends on 1) The lithium-ion-conducting composite material of claim 1, wherein the particles have an average particle diameter of 0.2 μm to 2 μm. ### Claim 10 (depends on 1) The lithium-ion-conducting composite material of claim 1, wherein the particles have an average particle diameter of 5 μm to 70 μm. ### Claim 11 (depends on 1) The lithium-ion-conducting composite material of claim 1, further comprising a surface modification of the particles, wherein the surface modification provides an interfacial resistance of lithium-ion conductivity between the polymer and the particles that is reduced so that the lithium-ion conductivity is greater than for a comparable composite material without the surface modification. ### Claim 12 (depends on 1) The lithium-ion-conducting composite material of claim 1, wherein the particles are spray calcination particles. ### Claim 13 (depends on 12) The lithium-ion-conducting composite material of claim 12, wherein the particles are pulsation reactor particles. ### Claim 14 A process for producing a lithium ion conductor, comprising: providing a lithium-ion-conducting composite material, the composite material comprising a polymer and lithium-ion-conducting particles having a sphericity Ψ of at least 0.7, wherein the particles are present in at least 20 vol % of the composite material for a polydispersity index of particle size distribution of <0.7 or are present in at least 30 vol % of the composite material for the polydispersity index in a range from 0.7 to <1.2, or are present in at least 40 vol % of the composite material for the polydispersity index of >1.2; and sintering the composite material. ### Claim 15 (depends on 14) The process of claim 14, wherein the sintering step comprises sintering under elevated temperature and/or elevated pressure. ### Claim 16 (depends on 14) The process of claim 14, wherein the particles are produced by a method selected from the group consisting of spray calcinating, pulsation reactor spray calcinating, filamentization from a salt melt, droplet formation, and glass sphere production.