# US 2022/0045348 A1 · Electrochemical cell and hydrogen generation method > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2022/0045348 A1 - Document ID: US20220045348A1 - Status: Published application - Kind: A1 - Application number: 17/505,695 - Filed: 2021-10-20 - Published: 2022-02-10 - Earliest claimed: 2019-05-27 - Assignees: Panasonic Intellectual Property Management Co., Ltd. - Applicants: Panasonic Intellectual Property Management Co., Ltd. - Inventors: TAKEHITO GOTO; TOMOHIRO KUROHA; TAKASHI KAKUWA; TAKESHI TERAYAMA; SHIGENORI ONUMA; YUICHI MIKAMI; KOSUKE NUNOO; KYOHEI KAWADA - Web page: https://patentgrep.com/patent/US20220045348A1 ## CPC - H01M 8/1253: the electrolyte containing zirconium oxide - C01B 3/26: using catalysts - C25B 1/042: by electrolysis of steam - C25B 1/044: producing mixed hydrogen and oxygen gas, e.g. Brown's gas [HHO] - C25B 9/23: comprising ion-exchange membranes in or on which electrode material is embedded - C25B 9/70: Assemblies comprising two or more cells - C25B 9/75: having bipolar electrodes - C25B 9/77: having diaphragms - C25B 15/083: {Separating products} - H01M 4/9033: {Complex oxides, optionally doped, of the type M1MeO3, M1 being an alkaline earth metal or a rare earth, Me being a metal, e.g. perovskites} - C25B 15/02: Process control or regulation - H01M 2008/1293: {Fuel cells with solid oxide electrolytes} - Y02E 60/36: Hydrogen production from non-carbon containing sources, e.g. by water electrolysis - Y02E 60/50: Fuel cells - 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 - C01B: NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; {METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C} - C25B: ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR (anodic or cathodic protection C23F13/00; single-crystal growth C30B) - 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 An electrochemical cell of the present disclosure includes a first cell and a second cell. The first cell includes a first electrolyte layer containing an oxide ion conductor. The second cell includes a second electrolyte layer containing a proton conductor, and the second cell is disposed to face the first cell. ## Claims ### Claim 1 An electrochemical cell comprising: a first cell including a first electrolyte layer containing an oxide ion conductor; and a second cell including a second electrolyte layer containing a proton conductor, the second cell being disposed to face the first cell. ### Claim 1 (depends on 1) electrochemical cell according to claim 1, wherein the first cell further includes a first electrode and a second electrode, in the first cell, the first electrolyte layer is disposed between the first electrode and the second electrode, the second cell further includes a third electrode and a fourth electrode, in the second cell, the second electrolyte layer is disposed between the third electrode and the fourth electrode, and the first electrode and the third electrode face each other. ### Claim 2 (depends on 1) The electrochemical cell according to claim 1, further comprising a gas path provided between the first cell and the second cell, wherein the first cell and the second cell face each other across the gas path. ### Claim 3 (depends on 2) The electrochemical cell according to claim 2, wherein a downstream end of the gas path is dosed. ### Claim 4 (depends on 2) The electrochemical cell according to claim 2, further comprising a porous layer disposed between the first cell and the second cell, wherein at least a part of the gas path is composed of the porous layer, ### Claim 5 (depends on 2) The electrochemical cell according to claim 2, further comprising a support disposed in the gas path and the support is in contact with the first cell and the second cell, ### Claim 6 (depends on 2) The electrochemical cell according to claim 2, wherein a flow path cross-sectional area of an upstream part of the gas path is larger than a flow path cross-sectional area of a downstream part of the gas path. ### Claim 8 (depends on 7) The electrochemical cell according to claim 7, wherein hydrogen is generated at the first electrode, hydrogen is generated at the second electrode, hydrogen is converted to protons at the third electrode, and hydrogen is generated at the fourth electrode. ### Claim 9 (depends on 1) The electrochemical cell according to claim 1, further comprising a power source that supplies power to the first cell and the second cell. ### Claim 10 (depends on 1) The electrochemical cell according claim 1, further comprising: a first power source that supplies power to the first cell; and a second power source that supplies power to the second cell. ### Claim 11 (depends on 1) The electrochemical cell according to claim 1, wherein the proton conductor includes at least one selected from the group consisting of BaZr1-x1M1x1O3-δ, BaCe1-x2M2x2O3-δ, and BaZr1-x3-y3Cex3M3y3O3-δ, where M1, M2, and M3 each include at least one selected from the group consisting of Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Y, Sc, In, and Lu, a value of x1 satisfies 0